diff --git a/app/src/main/assets/txtTocRule.json b/app/src/main/assets/txtTocRule.json
index 4e93e04d7..1304059d0 100644
--- a/app/src/main/assets/txtTocRule.json
+++ b/app/src/main/assets/txtTocRule.json
@@ -1,62 +1,68 @@
 [
-  {
-      "enable": true,
-      "name": "数字 分隔符 标题名称",
-      "rule": "^[ \\t]{0,4}\\d{1,5}[\\,\\.， 、\\-].{1,30}$",
-      "serialNumber": 0
-  },
-  {
-      "enable": true,
-      "name": "目录",
-      "rule": "^[ \\t]{0,4}(?:(?:内容|文章)?简介|前言|序章|楔子|正文(?!完)|[Cc]hapter|[Ss]ection|终章|后记|尾声|番外|第?\\s{0,4}[\\d零一二两三四五六七八九十百千万壹贰叁肆伍陆柒捌玖拾佰仟]+?\\s{0,4}(?:章|节(?!课)|卷|集(?![合和])|部(?!分)|篇(?!张))).{0,30}$",
-      "serialNumber": 1
-  },
-  {
-      "enable": false,
-      "name": "目录(不匹配行前空白)",
-      "rule": "^(?<=\\s)(?:(?:内容|文章)?简介|前言|序章|楔子|正文(?!完)|[Cc]hapter|[Ss]ection|终章|后记|尾声|番外|第?\\s{0,4}[\\d零一二两三四五六七八九十百千万壹贰叁肆伍陆柒捌玖拾佰仟]+?\\s{0,4}(?:章|节(?!课)|卷|集(?![合和])|部(?!分)|篇(?!张))).{0,30}$",
-      "serialNumber": 2
-  },
-  {
-      "enable": false,
-      "name": "目录(去简介)",
-      "rule": "^(?<=\\s)(?:前言|序章|楔子|正文(?!完)|[Cc]hapter|[Ss]ection|终章|后记|尾声|番外|第?\\s{0,4}[\\d零一二两三四五六七八九十百千万壹贰叁肆伍陆柒捌玖拾佰仟]+?\\s{0,4}(?:章|节(?!课)|卷|集(?![合和])|部(?!分)|篇(?!张))).{0,30}$",
-      "serialNumber": 3
-  },
-  {
-      "enable": false,
-      "name": "目录(古典小说备用)",
-      "rule": "^[ \\t]{0,4}(?:前言|序章|楔子|正文(?!完)|[Cc]hapter|[Ss]ection|终章|后记|尾声|番外|第?\\s{0,4}[\\d零一二两三四五六七八九十百千万壹贰叁肆伍陆柒捌玖拾佰仟]+?\\s{0,4}(?:章|节(?!课)|卷|集(?![合和])|部(?!分)|场(?![和合比电是])|篇(?!张))).{0,30}$",
-      "serialNumber": 4
-  },
-  {
-      "enable": true,
-      "name": "Chapter/Section/Part 序号 标题",
-      "rule": "^[ \\t]{0,4}(?:[Cc]hapter|[Ss]ection|[Pp]art)\\s{0,4}\\d{1,4}.{0,30}$",
-      "serialNumber": 5
-  },
-  {
-      "enable": true,
-      "name": "正文 标题/序号",
-      "rule": "^[ \\t]{0,4}正文\\s{1,4}.{0,20}$",
-      "serialNumber": 6
-  },
-  {
-      "enable": true,
-      "name": "特殊符号 序号 标题",
-      "rule": "^[ \\t]{0,4}[〈〖〔【][第卷][\\d零一二两三四五六七八九十百千万壹贰叁肆伍陆柒捌玖拾佰仟]{1,10}[章节][\\.:： \f\t].{0,30}$",
-      "serialNumber": 7
-  },
-  {
-      "enable": true,
-      "name": "特殊符号 标题",
-      "rule": "^[ \\t]{0,4}[〈〖〔【☆★].{1,30}[】〕〗〉]?\\s{0,4}$",
-      "serialNumber": 8
-  },
-  {
-      "enable":false,
-      "name": "特殊符号 标题(不匹配空白字符)",
-      "rule": "(?<=\\s)[〈〖〔【☆★].{1,30}[】〕〗〉]?\\s{0,4}$",
-      "serialNumber": 9
-  }
+    {
+        "enable": true,
+        "name": "目录",
+        "rule": "^[ \\t]{0,4}(?:(?:内容|文章)?简介|文案|前言|序章|楔子|正文(?!完)|终章|后记|尾声|番外|第?\\s{0,4}[\\d零一二两三四五六七八九十百千万壹贰叁肆伍陆柒捌玖拾佰仟]+?\\s{0,4}(?:章|节(?!课)|卷|集(?![合和])|部(?!分)|篇(?!张))).{0,30}$",
+        "serialNumber": 0
+    },
+    {
+        "enable": false,
+        "name": "目录(不匹配行前空白)",
+        "rule": "^(?<=\\s)(?:(?:内容|文章)?简介|文案|前言|序章|楔子|正文(?!完)|终章|后记|尾声|番外|第?\\s{0,4}[\\d零一二两三四五六七八九十百千万壹贰叁肆伍陆柒捌玖拾佰仟]+?\\s{0,4}(?:章|节(?!课)|卷|集(?![合和])|部(?!分)|篇(?!张))).{0,30}$",
+        "serialNumber": 1
+    },
+    {
+        "enable": false,
+        "name": "目录(去简介)",
+        "rule": "^(?<=\\s)(?:前言|序章|楔子|正文(?!完)|终章|后记|尾声|番外|第?\\s{0,4}[\\d零一二两三四五六七八九十百千万壹贰叁肆伍陆柒捌玖拾佰仟]+?\\s{0,4}(?:章|节(?!课)|卷|集(?![合和])|部(?!分)|篇(?!张))).{0,30}$",
+        "serialNumber": 2
+    },
+    {
+        "enable": false,
+        "name": "目录(古典、轻小说备用)",
+        "rule": "^[ \\t]{0,4}(?:前言|序章|楔子|正文(?!完)|终章|后记|尾声|番外|第?\\s{0,4}[\\d零一二两三四五六七八九十百千万壹贰叁肆伍陆柒捌玖拾佰仟]+?\\s{0,4}(?:章|节(?!课)|卷|集(?![合和])|部(?!分)|回(?![合来事去])|场(?![和合比电是])|篇(?!张))).{0,30}$",
+        "serialNumber": 3
+    },
+    {
+        "enable": true,
+        "name": "数字 分隔符 标题名称",
+        "rule": "^[ \\t]{0,4}\\d{1,5}[\\,\\.， 、\\-].{1,30}$",
+        "serialNumber": 4
+    },
+    {
+        "enable": true,
+        "name": "正文 标题/序号",
+        "rule": "^[ \\t]{0,4}正文\\s{1,4}.{0,20}$",
+        "serialNumber": 5
+    },
+    {
+        "enable": true,
+        "name": "Chapter/Section/Part 序号 标题",
+        "rule": "^[ \\t]{0,4}(?:[Cc]hapter|[Ss]ection|[Pp]art)\\s{0,4}\\d{1,4}.{0,30}$",
+        "serialNumber": 6
+    },
+    {
+        "enable": true,
+        "name": "特殊符号 序号 标题",
+        "rule": "^[ \\t]{0,4}[〈〖〔【][第卷][\\d零一二两三四五六七八九十百千万壹贰叁肆伍陆柒捌玖拾佰仟]{1,10}[章节][\\.:： \f\t].{0,30}$",
+        "serialNumber": 7
+    },
+    {
+        "enable": true,
+        "name": "特殊符号 标题",
+        "rule": "^[ \\t]{0,4}[\\[〈「『〖〔《（【\\(☆★].{1,30}[\\)】）》〕〗』」〉\\]]?\\s{0,4}$",
+        "serialNumber": 8
+    },
+    {
+        "enable":false,
+        "name": "特殊符号 标题(不匹配空白字符)",
+        "rule": "^(?<=\\s)[\\[〈「『〖〔《（【\\(☆★].{1,30}[\\)】）》〕〗』」〉\\]]?\\s{0,4}$",
+        "serialNumber": 9
+    },
+    {
+        "enable":false,
+        "name": "顶格标题",
+        "rule": "^\\S.{1,20}$",
+        "serialNumber": 10
+    }
 ]
diff --git a/app/src/main/assets/updateLog.md b/app/src/main/assets/updateLog.md
index dea42f86d..b78537486 100644
--- a/app/src/main/assets/updateLog.md
+++ b/app/src/main/assets/updateLog.md
@@ -1,12 +1,27 @@
 ## 更新日志
-* 旧版数据导入教程：
-* 先在旧版阅读(2.x)中进行备份，然后在新版阅读(3.x)【我的】->【备份与恢复】，选择【导入旧版本数据】。
+* 旧版数据导入教程：先在旧版阅读(2.x)中进行备份，然后在新版阅读(3.x)【我的】->【备份与恢复】，选择【导入旧版本数据】。
+* 请关注[开源阅读软件]()支持我,同时关注合作公众号[小说拾遗](),阅读公众号小编。
+
+**2020/03/02**
+* 添加书源登录
+* 替换规则实时生效
+* 页面最后一行计算是否能放下时不计算行距
+
+**2020/03/01**
+* 修复书源解析的一个bug
+* 添加底部操作栏颜色配置
+* 修复滚动点击翻页,修复滚动最后一页显示加载中
+* 去除备份恢复默认路径
+* 尝试修复部分手机一键导入书源报错
+* 翻页还有些bug不用反馈了,我已经知道,会修复的
 
 **2020/02/29**
 * 添加书源一键导入
 * 修复主题模式跟随系统
 * 修复书源校验
 * 添加书架排序
+* 添加点击翻页开关
+* 修复共用布局没有记住配置的bug
 
 **2020/02/28**
 * 解决阅读界面部分字体超出范围的问题
diff --git a/app/src/main/java/io/legado/app/App.kt b/app/src/main/java/io/legado/app/App.kt
index cf0f4cf43..95f29cd64 100644
--- a/app/src/main/java/io/legado/app/App.kt
+++ b/app/src/main/java/io/legado/app/App.kt
@@ -78,26 +78,24 @@ class App : Application() {
             ThemeStore.editTheme(this)
                 .primaryColor(
                     getPrefInt("colorPrimaryNight", getCompatColor(R.color.md_blue_grey_600))
-                )
-                .accentColor(
+                ).accentColor(
                     getPrefInt("colorAccentNight", getCompatColor(R.color.md_brown_800))
-                )
-                .backgroundColor(
+                ).backgroundColor(
                     getPrefInt("colorBackgroundNight", getCompatColor(R.color.shine_color))
-                )
-                .apply()
+                ).bottomBackground(
+                    getPrefInt("colorBottomBackgroundNight", getCompatColor(R.color.md_grey_850))
+                ).apply()
         } else {
             ThemeStore.editTheme(this)
                 .primaryColor(
                     getPrefInt("colorPrimary", getCompatColor(R.color.md_indigo_800))
-                )
-                .accentColor(
+                ).accentColor(
                     getPrefInt("colorAccent", getCompatColor(R.color.md_red_600))
-                )
-                .backgroundColor(
+                ).backgroundColor(
                     getPrefInt("colorBackground", getCompatColor(R.color.md_grey_100))
-                )
-                .apply()
+                ).bottomBackground(
+                    getPrefInt("colorBottomBackground", getCompatColor(R.color.md_grey_200))
+                ).apply()
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/constant/PreferKey.kt b/app/src/main/java/io/legado/app/constant/PreferKey.kt
index 225154a97..72d8c6b15 100644
--- a/app/src/main/java/io/legado/app/constant/PreferKey.kt
+++ b/app/src/main/java/io/legado/app/constant/PreferKey.kt
@@ -5,6 +5,7 @@ object PreferKey {
     const val themeMode = "themeMode"
     const val downloadPath = "downloadPath"
     const val hideStatusBar = "hideStatusBar"
+    const val clickTurnPage = "clickTurnPage"
     const val clickAllNext = "clickAllNext"
     const val hideNavigationBar = "hideNavigationBar"
     const val precisionSearch = "precisionSearch"
diff --git a/app/src/main/java/io/legado/app/help/BookHelp.kt b/app/src/main/java/io/legado/app/help/BookHelp.kt
index c7560b819..7df2540c5 100644
--- a/app/src/main/java/io/legado/app/help/BookHelp.kt
+++ b/app/src/main/java/io/legado/app/help/BookHelp.kt
@@ -237,14 +237,30 @@ object BookHelp {
     private var bookName: String? = null
     private var bookOrigin: String? = null
     private var replaceRules: List<ReplaceRule> = arrayListOf()
-    var bodyIndentCount = App.INSTANCE.getPrefInt(PreferKey.bodyIndent, 2)
-        set(value) {
-            field = value
-            App.INSTANCE.putPrefInt(PreferKey.bodyIndent, value)
-            bodyIndent = "　".repeat(value)
-        }
-    var bodyIndent = "　".repeat(bodyIndentCount)
 
+    @Synchronized
+    fun upReplaceRules(name: String? = null, origin: String? = null) {
+        if (name != null) {
+            if (bookName != name || bookOrigin != origin) {
+                replaceRules = if (origin.isNullOrEmpty()) {
+                    App.db.replaceRuleDao().findEnabledByScope(name)
+                } else {
+                    App.db.replaceRuleDao().findEnabledByScope(name, origin)
+                }
+                bookName = name
+                bookOrigin = origin
+            }
+        } else {
+            val o = bookOrigin
+            bookName?.let {
+                replaceRules = if (o.isNullOrEmpty()) {
+                    App.db.replaceRuleDao().findEnabledByScope(it)
+                } else {
+                    App.db.replaceRuleDao().findEnabledByScope(it, o)
+                }
+            }
+        }
+    }
 
     fun disposeContent(
         title: String,
@@ -253,23 +269,17 @@ object BookHelp {
         content: String,
         enableReplace: Boolean
     ): String {
-        synchronized(this) {
-            if (enableReplace && (bookName != name || bookOrigin != origin)) {
-                replaceRules = if (origin.isNullOrEmpty()) {
-                    App.db.replaceRuleDao().findEnabledByScope(name)
-                } else {
-                    App.db.replaceRuleDao().findEnabledByScope(name, origin)
-                }
-            }
-        }
         var c = content
-        for (item in replaceRules) {
-            item.pattern.let {
-                if (it.isNotEmpty()) {
-                    c = if (item.isRegex) {
-                        c.replace(it.toRegex(), item.replacement)
-                    } else {
-                        c.replace(it, item.replacement)
+        if (enableReplace) {
+            upReplaceRules(name, origin)
+            for (item in replaceRules) {
+                item.pattern.let {
+                    if (it.isNotEmpty()) {
+                        c = if (item.isRegex) {
+                            c.replace(it.toRegex(), item.replacement)
+                        } else {
+                            c.replace(it, item.replacement)
+                        }
                     }
                 }
             }
@@ -281,6 +291,6 @@ object BookHelp {
             1 -> c = ZhConvertBootstrap.newInstance().toSimple(c)
             2 -> c = ZhConvertBootstrap.newInstance().toTraditional(c)
         }
-        return c.replace("\\s*\\n+\\s*".toRegex(), "\n$bodyIndent")
+        return c.replace("\\s*\\n+\\s*".toRegex(), "\n${ReadBookConfig.bodyIndent}")
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/help/JsExtensions.kt b/app/src/main/java/io/legado/app/help/JsExtensions.kt
index 0160000f7..32da4bb06 100644
--- a/app/src/main/java/io/legado/app/help/JsExtensions.kt
+++ b/app/src/main/java/io/legado/app/help/JsExtensions.kt
@@ -17,7 +17,7 @@ interface JsExtensions {
     fun ajax(urlStr: String): String? {
         return try {
             val analyzeUrl = AnalyzeUrl(urlStr, null, null, null, null, null)
-            val call = analyzeUrl.getResponse()
+            val call = analyzeUrl.getResponse(urlStr)
             val response = call.execute()
             response.body()
         } catch (e: Exception) {
diff --git a/app/src/main/java/io/legado/app/help/ReadBookConfig.kt b/app/src/main/java/io/legado/app/help/ReadBookConfig.kt
index 57ccd5f14..a3a6de521 100644
--- a/app/src/main/java/io/legado/app/help/ReadBookConfig.kt
+++ b/app/src/main/java/io/legado/app/help/ReadBookConfig.kt
@@ -26,23 +26,6 @@ object ReadBookConfig {
     }
     val durConfig get() = getConfig(styleSelect)
     private val shareConfig get() = getConfig(5)
-    var styleSelect = App.INSTANCE.getPrefInt(PreferKey.readStyleSelect)
-        set(value) {
-            field = value
-            App.INSTANCE.putPrefInt(PreferKey.readStyleSelect, value)
-        }
-    var shareLayout = App.INSTANCE.getPrefBoolean(PreferKey.shareLayout)
-        set(value) {
-            field = value
-            App.INSTANCE.putPrefBoolean(PreferKey.shareLayout, value)
-        }
-    var pageAnim = App.INSTANCE.getPrefInt(PreferKey.pageAnim)
-        set(value) {
-            field = value
-            isScroll = value == 3
-            App.INSTANCE.putPrefInt(PreferKey.pageAnim, value)
-        }
-    var isScroll = pageAnim == 3
     var bg: Drawable? = null
 
     init {
@@ -112,6 +95,39 @@ object ReadBookConfig {
     }
 
     //配置写入读取
+    var styleSelect = App.INSTANCE.getPrefInt(PreferKey.readStyleSelect)
+        set(value) {
+            field = value
+            if (App.INSTANCE.getPrefInt(PreferKey.readStyleSelect) != value) {
+                App.INSTANCE.putPrefInt(PreferKey.readStyleSelect, value)
+            }
+        }
+    var shareLayout = App.INSTANCE.getPrefBoolean(PreferKey.shareLayout)
+        set(value) {
+            field = value
+            if (App.INSTANCE.getPrefBoolean(PreferKey.shareLayout) != value) {
+                App.INSTANCE.putPrefBoolean(PreferKey.shareLayout, value)
+            }
+        }
+    var pageAnim = App.INSTANCE.getPrefInt(PreferKey.pageAnim)
+        set(value) {
+            field = value
+            isScroll = value == 3
+            if (App.INSTANCE.getPrefInt(PreferKey.pageAnim) != value) {
+                App.INSTANCE.putPrefInt(PreferKey.pageAnim, value)
+            }
+        }
+    var isScroll = pageAnim == 3
+    val clickTurnPage get() = App.INSTANCE.getPrefBoolean(PreferKey.clickTurnPage, true)
+    var bodyIndentCount = App.INSTANCE.getPrefInt(PreferKey.bodyIndent, 2)
+        set(value) {
+            field = value
+            bodyIndent = "　".repeat(value)
+            if (App.INSTANCE.getPrefInt(PreferKey.bodyIndent, 2) != value) {
+                App.INSTANCE.putPrefInt(PreferKey.bodyIndent, value)
+            }
+        }
+    var bodyIndent = "　".repeat(bodyIndentCount)
     var hideStatusBar = App.INSTANCE.getPrefBoolean(PreferKey.hideStatusBar)
     var hideNavigationBar = App.INSTANCE.getPrefBoolean(PreferKey.hideNavigationBar)
     var textBold: Boolean
diff --git a/app/src/main/java/io/legado/app/help/http/AjaxWebView.kt b/app/src/main/java/io/legado/app/help/http/AjaxWebView.kt
index 81d0347b8..f501fcb71 100644
--- a/app/src/main/java/io/legado/app/help/http/AjaxWebView.kt
+++ b/app/src/main/java/io/legado/app/help/http/AjaxWebView.kt
@@ -1,7 +1,6 @@
 package io.legado.app.help.http
 
 import android.annotation.SuppressLint
-import android.net.http.SslError
 import android.os.Build
 import android.os.Handler
 import android.os.Looper
@@ -167,10 +166,6 @@ class AjaxWebView {
                 ).sendToTarget()
             }
         }
-
-        override fun onReceivedSslError(view: WebView, handler: SslErrorHandler, error: SslError) {
-            handler.proceed()
-        }
     }
 
     private class EvalJsRunnable(
@@ -242,10 +237,6 @@ class AjaxWebView {
             }
         }
 
-        override fun onReceivedSslError(view: WebView, handler: SslErrorHandler, error: SslError) {
-            handler.proceed()
-        }
-
         override fun onPageFinished(view: WebView, url: String) {
             params.setCookie(url)
             if (params.hasJavaScript()) {
diff --git a/app/src/main/java/io/legado/app/help/http/CookieStore.kt b/app/src/main/java/io/legado/app/help/http/CookieStore.kt
index d01eb465c..d82a4b175 100644
--- a/app/src/main/java/io/legado/app/help/http/CookieStore.kt
+++ b/app/src/main/java/io/legado/app/help/http/CookieStore.kt
@@ -3,15 +3,15 @@ package io.legado.app.help.http
 import android.text.TextUtils
 import io.legado.app.App
 import io.legado.app.data.entities.Cookie
+import io.legado.app.help.coroutine.Coroutine
 
 
 object CookieStore {
 
     fun setCookie(url: String, cookie: String?) {
-        try {
+        Coroutine.async {
             val cookieBean = Cookie(url, cookie ?: "")
             App.db.cookieDao().insert(cookieBean)
-        } catch (ignore: Exception) {
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/help/storage/Backup.kt b/app/src/main/java/io/legado/app/help/storage/Backup.kt
index 921910f34..8c4fa8fc2 100644
--- a/app/src/main/java/io/legado/app/help/storage/Backup.kt
+++ b/app/src/main/java/io/legado/app/help/storage/Backup.kt
@@ -101,9 +101,8 @@ object Backup {
                 val file = File(backupPath + File.separator + fileName)
                 if (file.exists()) {
                     treeDoc.findFile(fileName)?.delete()
-                    treeDoc.createFile("", fileName)?.let {
-                        DocumentUtils.writeBytes(context, file.readBytes(), it.uri)
-                    }
+                    treeDoc.createFile("", fileName)
+                        ?.writeBytes(context, file.readBytes())
                 }
             }
         }
diff --git a/app/src/main/java/io/legado/app/help/storage/ImportOldData.kt b/app/src/main/java/io/legado/app/help/storage/ImportOldData.kt
index 7329705e9..9087c3e9f 100644
--- a/app/src/main/java/io/legado/app/help/storage/ImportOldData.kt
+++ b/app/src/main/java/io/legado/app/help/storage/ImportOldData.kt
@@ -17,15 +17,12 @@ import org.jetbrains.anko.toast
 import java.io.File
 
 object ImportOldData {
-    val yueDuPath by lazy {
-        FileUtils.getSdCardPath() + File.separator + "YueDu"
-    }
 
-    fun import(context: Context) {
+    fun import(context: Context, file: File) {
         GlobalScope.launch(Dispatchers.IO) {
             try {// 导入书架
                 val shelfFile =
-                    FileUtils.createFileIfNotExist(yueDuPath + File.separator + "myBookShelf.json")
+                    FileUtils.createFileIfNotExist(file, "myBookShelf.json")
                 val json = shelfFile.readText()
                 val importCount = importOldBookshelf(json)
                 withContext(Dispatchers.Main) {
@@ -39,7 +36,7 @@ object ImportOldData {
 
             try {// Book source
                 val sourceFile =
-                    FileUtils.createFileIfNotExist(yueDuPath + File.separator + "myBookSource.json")
+                    FileUtils.createFileIfNotExist(file, "myBookSource.json")
                 val json = sourceFile.readText()
                 val importCount = importOldSource(json)
                 withContext(Dispatchers.Main) {
@@ -53,7 +50,7 @@ object ImportOldData {
 
             try {// Replace rules
                 val ruleFile =
-                    FileUtils.createFileIfNotExist(yueDuPath + File.separator + "myBookReplaceRule.json")
+                    FileUtils.createFileIfNotExist(file, "myBookReplaceRule.json")
                 val json = ruleFile.readText()
                 val importCount = importOldReplaceRule(json)
                 withContext(Dispatchers.Main) {
@@ -115,13 +112,13 @@ object ImportOldData {
         }
     }
 
-    fun importOldBookshelf(json: String): Int {
+    private fun importOldBookshelf(json: String): Int {
         val books = OldBook.toNewBook(json)
         App.db.bookDao().insert(*books.toTypedArray())
         return books.size
     }
 
-    fun importOldSource(json: String): Int {
+    private fun importOldSource(json: String): Int {
         val bookSources = mutableListOf<BookSource>()
         val items: List<Map<String, Any>> = Restore.jsonPath.parse(json).read("$")
         for (item in items) {
diff --git a/app/src/main/java/io/legado/app/help/storage/Restore.kt b/app/src/main/java/io/legado/app/help/storage/Restore.kt
index dd48d6472..d9be6e9bd 100644
--- a/app/src/main/java/io/legado/app/help/storage/Restore.kt
+++ b/app/src/main/java/io/legado/app/help/storage/Restore.kt
@@ -114,6 +114,7 @@ object Restore {
                 pageAnim = App.INSTANCE.getPrefInt(PreferKey.pageAnim)
                 hideStatusBar = App.INSTANCE.getPrefBoolean(PreferKey.hideStatusBar)
                 hideNavigationBar = App.INSTANCE.getPrefBoolean(PreferKey.hideNavigationBar)
+                bodyIndentCount = App.INSTANCE.getPrefInt(PreferKey.bodyIndent, 2)
             }
             ChapterProvider.upStyle()
             ReadBook.loadContent()
diff --git a/app/src/main/java/io/legado/app/lib/theme/ATH.kt b/app/src/main/java/io/legado/app/lib/theme/ATH.kt
index e20741987..0bcbb114b 100644
--- a/app/src/main/java/io/legado/app/lib/theme/ATH.kt
+++ b/app/src/main/java/io/legado/app/lib/theme/ATH.kt
@@ -205,7 +205,7 @@ object ATH {
                 .setSelectedColor(ThemeStore.accentColor(bottom_navigation_view.context)).create()
             itemIconTintList = colorStateList
             itemTextColor = colorStateList
-            itemBackgroundResource = R.color.background_menu
+            setBackgroundColor(ThemeStore.bottomBackground(context))
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/lib/theme/MaterialValueHelper.kt b/app/src/main/java/io/legado/app/lib/theme/MaterialValueHelper.kt
index 1618884b5..fab853c6b 100644
--- a/app/src/main/java/io/legado/app/lib/theme/MaterialValueHelper.kt
+++ b/app/src/main/java/io/legado/app/lib/theme/MaterialValueHelper.kt
@@ -54,6 +54,9 @@ val Context.accentColor: Int
 val Context.backgroundColor: Int
     get() = ThemeStore.backgroundColor(this)
 
+val Context.bottomBackground: Int
+    get() = ThemeStore.bottomBackground(this)
+
 val Context.primaryTextColor: Int
     get() = getPrimaryTextColor(isDarkTheme)
 
@@ -78,6 +81,9 @@ val Fragment.accentColor: Int
 val Fragment.backgroundColor: Int
     get() = ThemeStore.backgroundColor(requireContext())
 
+val Fragment.bottomBackground: Int
+    get() = ThemeStore.bottomBackground(requireContext())
+
 val Fragment.primaryTextColor: Int
     get() = requireContext().getPrimaryTextColor(isDarkTheme)
 
diff --git a/app/src/main/java/io/legado/app/lib/theme/ThemeStore.kt b/app/src/main/java/io/legado/app/lib/theme/ThemeStore.kt
index 5335a6830..927fc2fb0 100644
--- a/app/src/main/java/io/legado/app/lib/theme/ThemeStore.kt
+++ b/app/src/main/java/io/legado/app/lib/theme/ThemeStore.kt
@@ -147,6 +147,11 @@ private constructor(private val mContext: Context) : ThemeStoreInterface {
         return this
     }
 
+    override fun bottomBackground(color: Int): ThemeStore {
+        mEditor.putInt(ThemeStorePrefKeys.KEY_BOTTOM_BACKGROUND, color)
+        return this
+    }
+
     override fun coloredStatusBar(colored: Boolean): ThemeStore {
         mEditor.putBoolean(ThemeStorePrefKeys.KEY_APPLY_PRIMARYDARK_STATUSBAR, colored)
         return this
@@ -279,6 +284,15 @@ private constructor(private val mContext: Context) : ThemeStoreInterface {
             )
         }
 
+        @CheckResult
+        @ColorInt
+        fun bottomBackground(context: Context): Int {
+            return prefs(context).getInt(
+                ThemeStorePrefKeys.KEY_BOTTOM_BACKGROUND,
+                ATHUtils.resolveColor(context, android.R.attr.colorBackground)
+            )
+        }
+
         @CheckResult
         fun coloredStatusBar(context: Context): Boolean {
             return prefs(context).getBoolean(ThemeStorePrefKeys.KEY_APPLY_PRIMARYDARK_STATUSBAR, true)
diff --git a/app/src/main/java/io/legado/app/lib/theme/ThemeStoreInterface.kt b/app/src/main/java/io/legado/app/lib/theme/ThemeStoreInterface.kt
index 55584b633..521b9d237 100644
--- a/app/src/main/java/io/legado/app/lib/theme/ThemeStoreInterface.kt
+++ b/app/src/main/java/io/legado/app/lib/theme/ThemeStoreInterface.kt
@@ -78,8 +78,12 @@ internal interface ThemeStoreInterface {
 
     fun textColorSecondaryInverseAttr(@AttrRes colorAttr: Int): ThemeStore
 
+    // Background
+
     fun backgroundColor(@ColorInt color: Int): ThemeStore
 
+    fun bottomBackground(@ColorInt color: Int): ThemeStore
+
     // Toggle configurations
 
     fun coloredStatusBar(colored: Boolean): ThemeStore
diff --git a/app/src/main/java/io/legado/app/lib/theme/ThemeStorePrefKeys.kt b/app/src/main/java/io/legado/app/lib/theme/ThemeStorePrefKeys.kt
index c934ef176..a2ab19d60 100644
--- a/app/src/main/java/io/legado/app/lib/theme/ThemeStorePrefKeys.kt
+++ b/app/src/main/java/io/legado/app/lib/theme/ThemeStorePrefKeys.kt
@@ -22,6 +22,7 @@ object ThemeStorePrefKeys {
         const val KEY_TEXT_COLOR_SECONDARY_INVERSE = "text_color_secondary_inverse"
 
         const val KEY_BACKGROUND_COLOR = "backgroundColor"
+        const val KEY_BOTTOM_BACKGROUND = "bottomBackground"
 
         const val KEY_APPLY_PRIMARYDARK_STATUSBAR = "apply_primarydark_statusbar"
         const val KEY_APPLY_PRIMARY_NAVBAR = "apply_primary_navbar"
diff --git a/app/src/main/java/io/legado/app/model/Rss.kt b/app/src/main/java/io/legado/app/model/Rss.kt
index c2568f458..b3622b40b 100644
--- a/app/src/main/java/io/legado/app/model/Rss.kt
+++ b/app/src/main/java/io/legado/app/model/Rss.kt
@@ -35,7 +35,7 @@ object Rss {
     ): Coroutine<String> {
         return Coroutine.async(scope, context) {
             val body = AnalyzeUrl(rssArticle.link, baseUrl = rssArticle.origin)
-                .getResponseAwait()
+                .getResponseAwait(rssArticle.origin)
                 .body
             val analyzeRule = AnalyzeRule()
             analyzeRule.setContent(
diff --git a/app/src/main/java/io/legado/app/model/WebBook.kt b/app/src/main/java/io/legado/app/model/WebBook.kt
index bb3f80b8d..5a51b486c 100644
--- a/app/src/main/java/io/legado/app/model/WebBook.kt
+++ b/app/src/main/java/io/legado/app/model/WebBook.kt
@@ -37,7 +37,7 @@ class WebBook(val bookSource: BookSource) {
                     baseUrl = sourceUrl,
                     headerMapF = bookSource.getHeaderMap()
                 )
-                val res = analyzeUrl.getResponseAwait()
+                val res = analyzeUrl.getResponseAwait(bookSource.bookSourceUrl)
                 BookList.analyzeBookList(
                     res.body,
                     bookSource,
@@ -65,7 +65,7 @@ class WebBook(val bookSource: BookSource) {
                 baseUrl = sourceUrl,
                 headerMapF = bookSource.getHeaderMap()
             )
-            val res = analyzeUrl.getResponseAwait()
+            val res = analyzeUrl.getResponseAwait(bookSource.bookSourceUrl)
             BookList.analyzeBookList(
                 res.body,
                 bookSource,
@@ -96,7 +96,7 @@ class WebBook(val bookSource: BookSource) {
                         baseUrl = sourceUrl,
                         headerMapF = bookSource.getHeaderMap()
                     )
-                    analyzeUrl.getResponseAwait().body
+                    analyzeUrl.getResponseAwait(bookSource.bookSourceUrl).body
                 }
             BookInfo.analyzeBookInfo(book, body, bookSource, book.bookUrl)
             book
@@ -122,7 +122,7 @@ class WebBook(val bookSource: BookSource) {
                         ruleUrl = book.tocUrl,
                         baseUrl = book.bookUrl,
                         headerMapF = bookSource.getHeaderMap()
-                    ).getResponseAwait().body
+                    ).getResponseAwait(bookSource.bookSourceUrl).body
                 }
             BookChapterList.analyzeChapterList(this, book, body, bookSource, book.tocUrl)
         }
diff --git a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeRule.kt b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeRule.kt
index f9dbba8ee..f88a5ee85 100644
--- a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeRule.kt
+++ b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeRule.kt
@@ -610,7 +610,7 @@ class AnalyzeRule(var book: BaseBook? = null) : JsExtensions {
     override fun ajax(urlStr: String): String? {
         return try {
             val analyzeUrl = AnalyzeUrl(urlStr, null, null, null, baseUrl, book)
-            val call = analyzeUrl.getResponse()
+            val call = analyzeUrl.getResponse(urlStr)
             val response = call.execute()
             response.body()
         } catch (e: Exception) {
diff --git a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeUrl.kt b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeUrl.kt
index f1c92e798..9ac402267 100644
--- a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeUrl.kt
+++ b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeUrl.kt
@@ -8,10 +8,7 @@ import io.legado.app.constant.Pattern.EXP_PATTERN
 import io.legado.app.constant.Pattern.JS_PATTERN
 import io.legado.app.data.entities.BaseBook
 import io.legado.app.help.JsExtensions
-import io.legado.app.help.http.AjaxWebView
-import io.legado.app.help.http.HttpHelper
-import io.legado.app.help.http.RequestMethod
-import io.legado.app.help.http.Res
+import io.legado.app.help.http.*
 import io.legado.app.help.http.api.HttpGetApi
 import io.legado.app.help.http.api.HttpPostApi
 import io.legado.app.utils.*
@@ -243,7 +240,11 @@ class AnalyzeUrl(
     }
 
     @Throws(Exception::class)
-    fun getResponse(): Call<String> {
+    fun getResponse(tag: String): Call<String> {
+        val cookie = CookieStore.getCookie(tag)
+        if (cookie.isNotEmpty()) {
+            headerMap["Cookie"] = cookie
+        }
         return when {
             method == RequestMethod.POST -> {
                 if (fieldMap.isNotEmpty()) {
@@ -267,7 +268,7 @@ class AnalyzeUrl(
 
     @Throws(Exception::class)
     suspend fun getResponseAwait(
-        tag: String? = null,
+        tag: String,
         jsStr: String? = null,
         sourceRegex: String? = null
     ): Res {
@@ -278,8 +279,13 @@ class AnalyzeUrl(
             params.javaScript = jsStr
             params.sourceRegex = sourceRegex
             params.postData = bodyTxt?.toByteArray()
+            params.tag = tag
             return HttpHelper.ajax(params)
         }
+        val cookie = CookieStore.getCookie(tag)
+        if (cookie.isNotEmpty()) {
+            headerMap["Cookie"] = cookie
+        }
         val res = when {
             method == RequestMethod.POST -> {
                 if (fieldMap.isNotEmpty()) {
diff --git a/app/src/main/java/io/legado/app/model/webBook/BookChapterList.kt b/app/src/main/java/io/legado/app/model/webBook/BookChapterList.kt
index aa0b7de74..8559351f4 100644
--- a/app/src/main/java/io/legado/app/model/webBook/BookChapterList.kt
+++ b/app/src/main/java/io/legado/app/model/webBook/BookChapterList.kt
@@ -31,7 +31,7 @@ object BookChapterList {
                 App.INSTANCE.getString(R.string.error_get_web_content, baseUrl)
             )
             Debug.log(bookSource.bookSourceUrl, "≡获取成功:${baseUrl}")
-            val analyzeRule = AnalyzeRule(book)
+
             val tocRule = bookSource.getTocRule()
             val nextUrlList = arrayListOf(baseUrl)
             var reverse = false
@@ -45,8 +45,7 @@ object BookChapterList {
             }
             var chapterData =
                 analyzeChapterList(
-                    analyzeRule.setContent(body, baseUrl),
-                    book.bookUrl, baseUrl, tocRule, listRule, bookSource, log = true
+                    book, baseUrl, body, tocRule, listRule, bookSource, log = true
                 )
             chapterData.chapterList?.let {
                 chapterList.addAll(it)
@@ -64,11 +63,10 @@ object BookChapterList {
                                 ruleUrl = nextUrl,
                                 book = book,
                                 headerMapF = bookSource.getHeaderMap()
-                            ).getResponseAwait()
+                            ).getResponseAwait(bookSource.bookSourceUrl)
                                 .body?.let { nextBody ->
                                 chapterData = analyzeChapterList(
-                                    analyzeRule.setContent(nextBody, nextUrl),
-                                    book.bookUrl, nextUrl, tocRule, listRule, bookSource
+                                    book, nextUrl, nextBody, tocRule, listRule, bookSource
                                 )
                                 nextUrl = if (chapterData.nextUrl.isNotEmpty()) {
                                     chapterData.nextUrl[0]
@@ -95,35 +93,20 @@ object BookChapterList {
                     }
                     Debug.log(bookSource.bookSourceUrl, "◇目录总页数:${nextUrlList.size}")
                     for (item in chapterDataList) {
-                        Coroutine.async(scope = coroutineScope) {
-                            val nextBody = AnalyzeUrl(
-                                ruleUrl = item.nextUrl,
-                                book = book,
-                                headerMapF = bookSource.getHeaderMap()
-                            ).getResponseAwait().body
-                            val nextChapterData = analyzeChapterList(
-                                analyzeRule.setContent(nextBody, item.nextUrl),
-                                book.bookUrl, item.nextUrl, tocRule, listRule, bookSource,
-                                false
-                            )
-                            synchronized(chapterDataList) {
-                                val isFinished = addChapterListIsFinish(
-                                    chapterDataList,
-                                    item,
-                                    nextChapterData.chapterList
-                                )
-                                if (isFinished) {
-                                    chapterDataList.forEach { item ->
-                                        item.chapterList?.let {
-                                            chapterList.addAll(it)
-                                        }
-                                    }
-                                    block.resume(finish(book, chapterList, reverse))
-                                }
-                            }
-                        }.onError {
-                            block.resumeWithException(it)
-                        }
+                        downloadToc(
+                            coroutineScope,
+                            item,
+                            book,
+                            bookSource,
+                            tocRule,
+                            listRule,
+                            chapterList,
+                            chapterDataList,
+                            {
+                                block.resume(finish(book, chapterList, reverse))
+                            }, {
+                                block.cancel(it)
+                            })
                     }
                 }
             }
@@ -132,6 +115,49 @@ object BookChapterList {
         }
     }
 
+    private fun downloadToc(
+        coroutineScope: CoroutineScope,
+        chapterData: ChapterData<String>,
+        book: Book,
+        bookSource: BookSource,
+        tocRule: TocRule,
+        listRule: String,
+        chapterList: ArrayList<BookChapter>,
+        chapterDataList: ArrayList<ChapterData<String>>,
+        onFinish: () -> Unit,
+        onError: (e: Throwable) -> Unit
+    ) {
+        Coroutine.async(scope = coroutineScope) {
+            val nextBody = AnalyzeUrl(
+                ruleUrl = chapterData.nextUrl,
+                book = book,
+                headerMapF = bookSource.getHeaderMap()
+            ).getResponseAwait(bookSource.bookSourceUrl).body
+                ?: throw Exception("${chapterData.nextUrl}, 下载失败")
+            val nextChapterData = analyzeChapterList(
+                book, chapterData.nextUrl, nextBody, tocRule, listRule, bookSource,
+                false
+            )
+            synchronized(chapterDataList) {
+                val isFinished = addChapterListIsFinish(
+                    chapterDataList,
+                    chapterData,
+                    nextChapterData.chapterList
+                )
+                if (isFinished) {
+                    chapterDataList.forEach { item ->
+                        item.chapterList?.let {
+                            chapterList.addAll(it)
+                        }
+                    }
+                    onFinish()
+                }
+            }
+        }.onError {
+            onError(it)
+        }
+    }
+
     private fun addChapterListIsFinish(
         chapterDataList: ArrayList<ChapterData<String>>,
         chapterData: ChapterData<String>,
@@ -173,15 +199,17 @@ object BookChapterList {
     }
 
     private fun analyzeChapterList(
-        analyzeRule: AnalyzeRule,
-        bookUrl: String,
+        book: Book,
         baseUrl: String,
+        body: String,
         tocRule: TocRule,
         listRule: String,
         bookSource: BookSource,
         getNextUrl: Boolean = true,
         log: Boolean = false
     ): ChapterData<List<String>> {
+        val analyzeRule = AnalyzeRule(book)
+        analyzeRule.setContent(body, baseUrl)
         val chapterList = arrayListOf<BookChapter>()
         val nextUrlList = arrayListOf<String>()
         val nextTocRule = tocRule.nextTocUrl
@@ -212,7 +240,7 @@ object BookChapterList {
             var isVip: String?
             for (item in elements) {
                 analyzeRule.setContent(item)
-                val bookChapter = BookChapter(bookUrl = bookUrl)
+                val bookChapter = BookChapter(bookUrl = book.bookUrl)
                 analyzeRule.chapter = bookChapter
                 bookChapter.title = analyzeRule.getString(nameRule)
                 bookChapter.url = analyzeRule.getString(urlRule, true)
diff --git a/app/src/main/java/io/legado/app/model/webBook/BookContent.kt b/app/src/main/java/io/legado/app/model/webBook/BookContent.kt
index d8e874195..14ea49b25 100644
--- a/app/src/main/java/io/legado/app/model/webBook/BookContent.kt
+++ b/app/src/main/java/io/legado/app/model/webBook/BookContent.kt
@@ -33,13 +33,11 @@ object BookContent {
             )
         )
         Debug.log(bookSource.bookSourceUrl, "≡获取成功:${baseUrl}")
-        val analyzeRule = AnalyzeRule(book)
         val content = StringBuilder()
         val nextUrlList = arrayListOf(baseUrl)
         val contentRule = bookSource.getContentRule()
         var contentData = analyzeContent(
-            analyzeRule.setContent(body, baseUrl),
-            contentRule, bookChapter, bookSource
+            book, baseUrl, body, contentRule, bookChapter, bookSource
         )
         content.append(contentData.content.replace(bookChapter.title, ""))
         if (contentData.nextUrl.size == 1) {
@@ -58,12 +56,11 @@ object BookContent {
                     ruleUrl = nextUrl,
                     book = book,
                     headerMapF = bookSource.getHeaderMap()
-                ).getResponseAwait()
+                ).getResponseAwait(bookSource.bookSourceUrl)
                     .body?.let { nextBody ->
                     contentData =
                         analyzeContent(
-                            analyzeRule.setContent(nextBody, nextUrl),
-                            contentRule, bookChapter, bookSource, false
+                            book, nextUrl, nextBody, contentRule, bookChapter, bookSource, false
                         )
                     nextUrl =
                         if (contentData.nextUrl.isNotEmpty()) contentData.nextUrl[0] else ""
@@ -83,12 +80,11 @@ object BookContent {
                         ruleUrl = item.nextUrl,
                         book = book,
                         headerMapF = bookSource.getHeaderMap()
-                    ).getResponseAwait()
+                    ).getResponseAwait(bookSource.bookSourceUrl)
                         .body?.let {
                         contentData =
                             analyzeContent(
-                                analyzeRule.setContent(it, item.nextUrl),
-                                contentRule, bookChapter, bookSource, false
+                                book, item.nextUrl, it, contentRule, bookChapter, bookSource, false
                             )
                         item.content = contentData.content
                     }
@@ -108,12 +104,16 @@ object BookContent {
 
     @Throws(Exception::class)
     private fun analyzeContent(
-        analyzeRule: AnalyzeRule,
+        book: Book,
+        baseUrl: String,
+        body: String,
         contentRule: ContentRule,
         chapter: BookChapter,
         bookSource: BookSource,
         printLog: Boolean = true
     ): ContentData<List<String>> {
+        val analyzeRule = AnalyzeRule(book)
+        analyzeRule.setContent(body, baseUrl)
         val nextUrlList = arrayListOf<String>()
         analyzeRule.chapter = chapter
         val nextUrlRule = contentRule.nextContentUrl
diff --git a/app/src/main/java/io/legado/app/ui/book/read/ReadBookActivity.kt b/app/src/main/java/io/legado/app/ui/book/read/ReadBookActivity.kt
index 48bdd6cf6..09d29a7f3 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/ReadBookActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/ReadBookActivity.kt
@@ -20,7 +20,9 @@ import io.legado.app.constant.PreferKey
 import io.legado.app.constant.Status
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookChapter
+import io.legado.app.help.BookHelp
 import io.legado.app.help.ReadBookConfig
+import io.legado.app.help.coroutine.Coroutine
 import io.legado.app.lib.dialogs.alert
 import io.legado.app.lib.dialogs.noButton
 import io.legado.app.lib.dialogs.okButton
@@ -40,6 +42,7 @@ import io.legado.app.ui.book.read.page.delegate.PageDelegate
 import io.legado.app.ui.book.source.edit.BookSourceEditActivity
 import io.legado.app.ui.changesource.ChangeSourceDialog
 import io.legado.app.ui.chapterlist.ChapterListActivity
+import io.legado.app.ui.login.SourceLogin
 import io.legado.app.ui.replacerule.ReplaceRuleActivity
 import io.legado.app.ui.replacerule.edit.ReplaceEditDialog
 import io.legado.app.ui.widget.dialog.TextDialog
@@ -63,6 +66,7 @@ class ReadBookActivity : VMBaseActivity<ReadBookViewModel>(R.layout.activity_boo
     ChangeSourceDialog.CallBack,
     ReadBook.CallBack,
     TocRegexDialog.CallBack,
+    ReplaceEditDialog.CallBack,
     ColorPickerDialogListener {
     private val requestCodeChapterList = 568
     private val requestCodeEditSource = 111
@@ -219,6 +223,12 @@ class ReadBookActivity : VMBaseActivity<ReadBookViewModel>(R.layout.activity_boo
                 supportFragmentManager,
                 ReadBook.book?.tocUrl
             )
+            R.id.menu_login -> ReadBook.webBook?.bookSource?.let {
+                startActivity<SourceLogin>(
+                    Pair("sourceUrl", it.bookSourceUrl),
+                    Pair("loginUrl", it.loginUrl)
+                )
+            }
         }
         return super.onCompatOptionsItemSelected(item)
     }
@@ -544,14 +554,33 @@ class ReadBookActivity : VMBaseActivity<ReadBookViewModel>(R.layout.activity_boo
         }
     }
 
+    /**
+     * 替换规则变化
+     */
+    override fun onReplaceRuleSave() {
+        Coroutine.async {
+            BookHelp.upReplaceRules()
+            ReadBook.loadContent()
+        }
+    }
+
+    /**
+     * 显示阅读样式配置
+     */
     override fun showReadStyle() {
         ReadStyleDialog().show(supportFragmentManager, "readStyle")
     }
 
+    /**
+     * 显示更多设置
+     */
     override fun showMoreSetting() {
         MoreConfigDialog().show(supportFragmentManager, "moreConfig")
     }
 
+    /**
+     * 更新状态栏,导航栏
+     */
     override fun upSystemUiVisibility() {
         Help.upSystemUiVisibility(this, !read_menu.isVisible)
     }
@@ -610,7 +639,7 @@ class ReadBookActivity : VMBaseActivity<ReadBookViewModel>(R.layout.activity_boo
                             viewModel.openChapter(index)
                         }
                     }
-                requestCodeReplace -> ReadBook.loadContent()
+                requestCodeReplace -> onReplaceRuleSave()
             }
         }
     }
diff --git a/app/src/main/java/io/legado/app/ui/book/read/ReadMenu.kt b/app/src/main/java/io/legado/app/ui/book/read/ReadMenu.kt
index 6dec43d12..254d037ad 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/ReadMenu.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/ReadMenu.kt
@@ -13,6 +13,7 @@ import io.legado.app.R
 import io.legado.app.help.AppConfig
 import io.legado.app.help.ReadBookConfig
 import io.legado.app.lib.theme.accentColor
+import io.legado.app.lib.theme.bottomBackground
 import io.legado.app.lib.theme.buttonDisabledColor
 import io.legado.app.service.help.ReadBook
 import io.legado.app.utils.*
@@ -48,6 +49,7 @@ class ReadMenu : FrameLayout {
             fabNightTheme.setImageResource(R.drawable.ic_brightness)
         }
         initAnimation()
+        ll_bottom_bg.setBackgroundColor(context.bottomBackground)
         vw_bg.onClick { }
         vwNavigationBar.onClick { }
         seek_brightness.progress = context.getPrefInt("brightness", 100)
diff --git a/app/src/main/java/io/legado/app/ui/book/read/TextActionMenu.kt b/app/src/main/java/io/legado/app/ui/book/read/TextActionMenu.kt
index 4dc9ba7da..7e90c7ad1 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/TextActionMenu.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/TextActionMenu.kt
@@ -95,6 +95,7 @@ class TextActionMenu(private val context: Context, private val callBack: CallBac
                         onMenuItemSelected(it)
                     }
                 }
+                callBack.onMenuActionFinally()
             }
         }
     }
@@ -121,7 +122,6 @@ class TextActionMenu(private val context: Context, private val callBack: CallBac
                 }
             }
         }
-        callBack.onMenuActionFinally()
     }
 
     @RequiresApi(Build.VERSION_CODES.M)
diff --git a/app/src/main/java/io/legado/app/ui/book/read/config/MoreConfigDialog.kt b/app/src/main/java/io/legado/app/ui/book/read/config/MoreConfigDialog.kt
index 9b975e7e8..9d8ea8ba8 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/config/MoreConfigDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/config/MoreConfigDialog.kt
@@ -16,6 +16,7 @@ import io.legado.app.constant.EventBus
 import io.legado.app.constant.PreferKey
 import io.legado.app.help.ReadBookConfig
 import io.legado.app.lib.theme.ATH
+import io.legado.app.lib.theme.bottomBackground
 import io.legado.app.ui.book.read.Help
 import io.legado.app.utils.getPrefBoolean
 import io.legado.app.utils.postEvent
@@ -47,7 +48,7 @@ class MoreConfigDialog : DialogFragment() {
         savedInstanceState: Bundle?
     ): View? {
         val view = LinearLayout(context)
-        view.setBackgroundResource(R.color.background)
+        view.setBackgroundColor(requireContext().bottomBackground)
         view.id = R.id.tag1
         container?.addView(view)
         return view
diff --git a/app/src/main/java/io/legado/app/ui/book/read/config/ReadAloudDialog.kt b/app/src/main/java/io/legado/app/ui/book/read/config/ReadAloudDialog.kt
index 6040c0880..8cce7d4d2 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/config/ReadAloudDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/config/ReadAloudDialog.kt
@@ -11,6 +11,7 @@ import androidx.fragment.app.DialogFragment
 import io.legado.app.R
 import io.legado.app.constant.EventBus
 import io.legado.app.help.AppConfig
+import io.legado.app.lib.theme.bottomBackground
 import io.legado.app.service.BaseReadAloudService
 import io.legado.app.service.help.ReadAloud
 import io.legado.app.service.help.ReadBook
@@ -54,6 +55,7 @@ class ReadAloudDialog : DialogFragment() {
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
+        ll_bottom_bg.setBackgroundColor(requireContext().bottomBackground)
         initData()
         initOnChange()
         initOnClick()
diff --git a/app/src/main/java/io/legado/app/ui/book/read/config/ReadStyleDialog.kt b/app/src/main/java/io/legado/app/ui/book/read/config/ReadStyleDialog.kt
index a6482caed..f7355534a 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/config/ReadStyleDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/config/ReadStyleDialog.kt
@@ -11,10 +11,10 @@ import androidx.fragment.app.DialogFragment
 import io.legado.app.R
 import io.legado.app.constant.EventBus
 import io.legado.app.constant.PreferKey
-import io.legado.app.help.BookHelp
 import io.legado.app.help.ReadBookConfig
 import io.legado.app.lib.dialogs.selector
 import io.legado.app.lib.theme.accentColor
+import io.legado.app.lib.theme.bottomBackground
 import io.legado.app.lib.theme.primaryColor
 import io.legado.app.ui.book.read.Help
 import io.legado.app.ui.book.read.ReadBookActivity
@@ -31,7 +31,7 @@ import org.jetbrains.anko.sdk27.listeners.onLongClick
 
 class ReadStyleDialog : DialogFragment(), FontSelectDialog.CallBack {
 
-    val callBack = activity as? ReadBookActivity
+    val callBack get() = activity as? ReadBookActivity
 
     override fun onStart() {
         super.onStart()
@@ -72,6 +72,7 @@ class ReadStyleDialog : DialogFragment(), FontSelectDialog.CallBack {
     }
 
     private fun initView() {
+        root_view.setBackgroundColor(requireContext().bottomBackground)
         dsb_text_size.valueFormat = {
             (it + 5).toString()
         }
@@ -118,7 +119,7 @@ class ReadStyleDialog : DialogFragment(), FontSelectDialog.CallBack {
                 title = getString(R.string.text_indent),
                 items = resources.getStringArray(R.array.indent).toList()
             ) { _, index ->
-                BookHelp.bodyIndentCount = index
+                ReadBookConfig.bodyIndentCount = index
                 postEvent(EventBus.UP_CONFIG, true)
             }
         }
diff --git a/app/src/main/java/io/legado/app/ui/book/read/page/ChapterProvider.kt b/app/src/main/java/io/legado/app/ui/book/read/page/ChapterProvider.kt
index 2c3996fd8..430db0e53 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/page/ChapterProvider.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/page/ChapterProvider.kt
@@ -9,7 +9,6 @@ import io.legado.app.App
 import io.legado.app.constant.PreferKey
 import io.legado.app.data.entities.BookChapter
 import io.legado.app.help.AppConfig
-import io.legado.app.help.BookHelp
 import io.legado.app.help.ReadBookConfig
 import io.legado.app.ui.book.read.page.entities.TextChapter
 import io.legado.app.ui.book.read.page.entities.TextLine
@@ -34,7 +33,6 @@ object ChapterProvider {
     var typeface: Typeface = Typeface.SANS_SERIF
     var titlePaint = TextPaint()
     var contentPaint = TextPaint()
-    private var bodyIndent = BookHelp.bodyIndent
 
     init {
         upStyle()
@@ -122,10 +120,12 @@ object ChapterProvider {
         )
         for (lineIndex in 0 until layout.lineCount) {
             textPages.last().height = durY
-            durY = durY + layout.getLineBottom(lineIndex) - layout.getLineTop(lineIndex)
             val textLine = TextLine(isTitle = true)
-            if (durY < visibleHeight) {
+            if (durY + layout.getLineBaseline(lineIndex) - layout.getLineTop(lineIndex)
+                + contentPaint.fontMetrics.descent < visibleHeight
+            ) {
                 textPages.last().textLines.add(textLine)
+                durY = durY + layout.getLineBottom(lineIndex) - layout.getLineTop(lineIndex)
             } else {
                 textPages.last().text = stringBuilder.toString()
                 stringBuilder.clear()
@@ -140,7 +140,7 @@ object ChapterProvider {
                     (layout.getLineBottom(lineIndex) - layout.getLineTop(lineIndex))).toFloat()
             textLine.lineBase = (paddingTop + durY -
                     (layout.getLineBottom(lineIndex) - layout.getLineBaseline(lineIndex))).toFloat()
-            textLine.lineBottom = textLine.lineBase + titlePaint.fontMetrics.descent
+            textLine.lineBottom = textLine.lineBase + contentPaint.fontMetrics.descent
             val words =
                 title.substring(layout.getLineStart(lineIndex), layout.getLineEnd(lineIndex))
             stringBuilder.append(words)
@@ -178,10 +178,12 @@ object ChapterProvider {
         )
         for (lineIndex in 0 until layout.lineCount) {
             textPages.last().height = durY
-            durY = durY + layout.getLineBottom(lineIndex) - layout.getLineTop(lineIndex)
             val textLine = TextLine()
-            if (durY < visibleHeight) {
+            if (durY + layout.getLineBaseline(lineIndex) - layout.getLineTop(lineIndex)
+                + contentPaint.fontMetrics.descent < visibleHeight
+            ) {
                 textPages.last().textLines.add(textLine)
+                durY = durY + layout.getLineBottom(lineIndex) - layout.getLineTop(lineIndex)
             } else {
                 textPages.last().text = stringBuilder.toString()
                 stringBuilder.clear()
@@ -227,6 +229,7 @@ object ChapterProvider {
         desiredWidth: Float
     ) {
         var x = 0f
+        val bodyIndent = ReadBookConfig.bodyIndent
         val icw = StaticLayout.getDesiredWidth(bodyIndent, textPaint) / bodyIndent.length
         for (i in 0..bodyIndent.lastIndex) {
             val x1 = x + icw
@@ -348,8 +351,6 @@ object ChapterProvider {
         titlePaint.textSize = (ReadBookConfig.textSize + 2).dp.toFloat()
         contentPaint.textSize = ReadBookConfig.textSize.dp.toFloat()
 
-        bodyIndent = BookHelp.bodyIndent
-
         upSize()
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/book/read/page/ContentTextView.kt b/app/src/main/java/io/legado/app/ui/book/read/page/ContentTextView.kt
index d17e55a67..e8beebf6a 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/page/ContentTextView.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/page/ContentTextView.kt
@@ -92,6 +92,7 @@ class ContentTextView(context: Context, attrs: AttributeSet?) : View(context, at
         }
         if (!ReadBookConfig.isScroll) return
         //滚动翻页
+        if (!pageFactory.hasNext()) return
         val nextPage = relativePage(1)
         relativeOffset = relativeOffset(1)
         nextPage.textLines.forEach { textLine ->
@@ -108,6 +109,7 @@ class ContentTextView(context: Context, attrs: AttributeSet?) : View(context, at
                 textLine.isReadAloud
             )
         }
+        if (!pageFactory.hasNextPlus()) return
         relativeOffset = relativeOffset(2)
         if (relativeOffset < ChapterProvider.visibleHeight) {
             relativePage(2).textLines.forEach { textLine ->
@@ -163,24 +165,20 @@ class ContentTextView(context: Context, attrs: AttributeSet?) : View(context, at
         }
 
         pageOffset += offset
-        if (pageOffset > 0) {
-            if (!pageFactory.hasPrev()) {
-                pageOffset = 0f
-            } else {
-                pageFactory.moveToPrev()
-                textPage = pageFactory.currentPage
-                pageOffset -= textPage.height
-                upView?.invoke(textPage)
-            }
+        if (!pageFactory.hasPrev() && pageOffset > 0) {
+            pageOffset = 0f
+        } else if (!pageFactory.hasNext() && pageOffset < 0) {
+            pageOffset = 0f
+        } else if (pageOffset > 0) {
+            pageFactory.moveToPrev()
+            textPage = pageFactory.currentPage
+            pageOffset -= textPage.height
+            upView?.invoke(textPage)
         } else if (pageOffset < -textPage.height) {
-            if (!pageFactory.hasNext()) {
-                pageOffset = -textPage.height.toFloat()
-            } else {
-                pageOffset += textPage.height
-                pageFactory.moveToNext()
-                textPage = pageFactory.currentPage
-                upView?.invoke(textPage)
-            }
+            pageOffset += textPage.height
+            pageFactory.moveToNext()
+            textPage = pageFactory.currentPage
+            upView?.invoke(textPage)
         }
         invalidate()
     }
diff --git a/app/src/main/java/io/legado/app/ui/book/read/page/PageFactory.kt b/app/src/main/java/io/legado/app/ui/book/read/page/PageFactory.kt
index 85cdecbd5..7a04ae5ec 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/page/PageFactory.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/page/PageFactory.kt
@@ -22,4 +22,5 @@ abstract class PageFactory<DATA>(protected val dataSource: DataSource) {
 
     abstract fun hasPrev(): Boolean
 
+    abstract fun hasNextPlus(): Boolean
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/ui/book/read/page/PageView.kt b/app/src/main/java/io/legado/app/ui/book/read/page/PageView.kt
index 1482d309a..c6839b214 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/page/PageView.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/page/PageView.kt
@@ -120,7 +120,7 @@ class PageView(context: Context, attrs: AttributeSet) :
         if (noAnim) {
             fillPage(PageDelegate.Direction.PREV)
         } else {
-            pageDelegate?.start(PageDelegate.Direction.PREV)
+            pageDelegate?.prevPageByAnim()
         }
     }
 
@@ -128,7 +128,7 @@ class PageView(context: Context, attrs: AttributeSet) :
         if (noAnim) {
             fillPage(PageDelegate.Direction.NEXT)
         } else {
-            pageDelegate?.start(PageDelegate.Direction.NEXT)
+            pageDelegate?.nextPageByAnim()
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/book/read/page/TextPageFactory.kt b/app/src/main/java/io/legado/app/ui/book/read/page/TextPageFactory.kt
index fe18f1b26..571f0d68f 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/page/TextPageFactory.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/page/TextPageFactory.kt
@@ -13,6 +13,10 @@ class TextPageFactory(dataSource: DataSource) : PageFactory<TextPage>(dataSource
         return hasNextChapter() || currentChapter?.isLastIndex(pageIndex) != true
     }
 
+    override fun hasNextPlus(): Boolean = with(dataSource) {
+        return hasNextChapter() || pageIndex < (currentChapter?.pageSize() ?: 1) - 2
+    }
+
     override fun moveToFirst() {
         ReadBook.setPageIndex(0)
     }
@@ -68,6 +72,9 @@ class TextPageFactory(dataSource: DataSource) : PageFactory<TextPage>(dataSource
                         ?: TextPage(title = it.title).format()
                 }
             }
+            if (!hasNextChapter()) {
+                return@with TextPage(text = "")
+            }
             nextChapter?.let {
                 return@with it.page(0)?.removePageAloudSpan()
                     ?: TextPage(title = it.title).format()
diff --git a/app/src/main/java/io/legado/app/ui/book/read/page/delegate/HorizontalPageDelegate.kt b/app/src/main/java/io/legado/app/ui/book/read/page/delegate/HorizontalPageDelegate.kt
index 586b3d88e..700728b14 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/page/delegate/HorizontalPageDelegate.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/page/delegate/HorizontalPageDelegate.kt
@@ -52,4 +52,19 @@ abstract class HorizontalPageDelegate(pageView: PageView) : PageDelegate(pageVie
         }
     }
 
+    override fun nextPageByAnim() {
+        if (!hasNext()) return
+        setDirection(Direction.NEXT)
+        setBitmap()
+        setTouchPoint(viewWidth.toFloat(), 0f)
+        onAnimStart()
+    }
+
+    override fun prevPageByAnim() {
+        if (!hasPrev()) return
+        setDirection(Direction.PREV)
+        setBitmap()
+        setTouchPoint(0f, 0f)
+        onAnimStart()
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/ui/book/read/page/delegate/PageDelegate.kt b/app/src/main/java/io/legado/app/ui/book/read/page/delegate/PageDelegate.kt
index 2b26714c4..76b40fb78 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/page/delegate/PageDelegate.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/page/delegate/PageDelegate.kt
@@ -12,6 +12,7 @@ import android.widget.Scroller
 import androidx.annotation.CallSuper
 import com.google.android.material.snackbar.Snackbar
 import io.legado.app.help.AppConfig
+import io.legado.app.help.ReadBookConfig
 import io.legado.app.ui.book.read.page.ContentView
 import io.legado.app.ui.book.read.page.PageView
 import io.legado.app.utils.screenshot
@@ -157,34 +158,6 @@ abstract class PageDelegate(protected val pageView: PageView) :
         }
     }
 
-    fun start(direction: Direction) {
-        if (isStarted) return
-        if (direction === Direction.NEXT) {
-            val x = viewWidth.toFloat()
-            val y = viewHeight.toFloat()
-            //初始化动画
-            setStartPoint(x, y, false)
-            //设置点击点
-            setTouchPoint(x, y, false)
-            //设置方向
-            if (!hasNext()) {
-                return
-            }
-        } else {
-            val x = 0.toFloat()
-            val y = viewHeight.toFloat()
-            //初始化动画
-            setStartPoint(x, y, false)
-            //设置点击点
-            setTouchPoint(x, y, false)
-            //设置方向方向
-            if (!hasPrev()) {
-                return
-            }
-        }
-        onAnimStart()
-    }
-
     open fun onAnimStart() {}//scroller start
 
     open fun onDraw(canvas: Canvas) {}//绘制
@@ -193,6 +166,10 @@ abstract class PageDelegate(protected val pageView: PageView) :
 
     open fun onScroll() {}//移动contentView， slidePage
 
+    abstract fun nextPageByAnim()
+
+    abstract fun prevPageByAnim()
+
     @CallSuper
     open fun setDirection(direction: Direction) {
         mDirection = direction
@@ -260,21 +237,14 @@ abstract class PageDelegate(protected val pageView: PageView) :
         if (centerRectF.contains(x, y)) {
             pageView.callBack.clickCenter()
             setTouchPoint(x, y)
-        } else {
+        } else if (ReadBookConfig.clickTurnPage) {
             if (x > viewWidth / 2 ||
                 AppConfig.clickAllNext
             ) {
-                //设置动画方向
-                if (!hasNext()) return true
-                setDirection(Direction.NEXT)
-                setBitmap()
+                nextPageByAnim()
             } else {
-                if (!hasPrev()) return true
-                setDirection(Direction.PREV)
-                setBitmap()
+                prevPageByAnim()
             }
-            setTouchPoint(x, y)
-            onAnimStart()
         }
         return true
     }
diff --git a/app/src/main/java/io/legado/app/ui/book/read/page/delegate/ScrollPageDelegate.kt b/app/src/main/java/io/legado/app/ui/book/read/page/delegate/ScrollPageDelegate.kt
index d90ee8649..a3434aeed 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/page/delegate/ScrollPageDelegate.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/page/delegate/ScrollPageDelegate.kt
@@ -2,6 +2,7 @@ package io.legado.app.ui.book.read.page.delegate
 
 import android.view.MotionEvent
 import android.view.VelocityTracker
+import io.legado.app.ui.book.read.page.ChapterProvider
 import io.legado.app.ui.book.read.page.PageView
 import kotlin.math.abs
 
@@ -58,4 +59,12 @@ class ScrollPageDelegate(pageView: PageView) : PageDelegate(pageView) {
         super.onDestroy()
         mVelocity.recycle()
     }
+
+    override fun nextPageByAnim() {
+        startScroll(0, 0, 0, -ChapterProvider.visibleHeight)
+    }
+
+    override fun prevPageByAnim() {
+        startScroll(0, 0, 0, ChapterProvider.visibleHeight)
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/ui/book/source/debug/BookSourceDebugActivity.kt b/app/src/main/java/io/legado/app/ui/book/source/debug/BookSourceDebugActivity.kt
index dafeaa218..75ac065e0 100644
--- a/app/src/main/java/io/legado/app/ui/book/source/debug/BookSourceDebugActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/source/debug/BookSourceDebugActivity.kt
@@ -83,7 +83,7 @@ class BookSourceDebugActivity :
 
     override fun onCompatOptionsItemSelected(item: MenuItem): Boolean {
         when (item.itemId) {
-            R.id.action_scan -> {
+            R.id.menu_scan -> {
                 startActivityForResult<QrCodeActivity>(qrRequestCode)
             }
         }
diff --git a/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditActivity.kt b/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditActivity.kt
index c0eab1b32..46f3eb49f 100644
--- a/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditActivity.kt
@@ -24,6 +24,7 @@ import io.legado.app.data.entities.rule.*
 import io.legado.app.lib.dialogs.alert
 import io.legado.app.lib.theme.ATH
 import io.legado.app.ui.book.source.debug.BookSourceDebugActivity
+import io.legado.app.ui.login.SourceLogin
 import io.legado.app.ui.widget.KeyboardToolPop
 import io.legado.app.utils.GSON
 import io.legado.app.utils.applyTint
@@ -67,22 +68,20 @@ class BookSourceEditActivity :
 
     override fun onCompatOptionsItemSelected(item: MenuItem): Boolean {
         when (item.itemId) {
-            R.id.menu_save -> {
-                val source = getSource()
+            R.id.menu_save -> getSource().let { source ->
                 if (checkSource(source)) {
                     viewModel.save(source) { setResult(Activity.RESULT_OK); finish() }
                 }
             }
-            R.id.menu_debug_source -> {
-                val source = getSource()
+            R.id.menu_debug_source -> getSource().let { source ->
                 if (checkSource(source)) {
                     viewModel.save(source) {
                         startActivity<BookSourceDebugActivity>(Pair("key", source.bookSourceUrl))
                     }
                 }
             }
-            R.id.menu_copy_source -> {
-                GSON.toJson(getSource())?.let { sourceStr ->
+            R.id.menu_copy_source -> getSource().let { source ->
+                GSON.toJson(source)?.let { sourceStr ->
                     val clipboard = getSystemService(Context.CLIPBOARD_SERVICE) as? ClipboardManager
                     clipboard?.setPrimaryClip(ClipData.newPlainText(null, sourceStr))
                 }
@@ -101,6 +100,18 @@ class BookSourceEditActivity :
                     toast(R.string.can_not_open)
                 }
             }
+            R.id.menu_login -> getSource().let {
+                if (checkSource(it)) {
+                    if (it.loginUrl.isNullOrEmpty()) {
+                        toast(R.string.source_no_login)
+                    } else {
+                        startActivity<SourceLogin>(
+                            Pair("sourceUrl", it.bookSourceUrl),
+                            Pair("loginUrl", it.loginUrl)
+                        )
+                    }
+                }
+            }
         }
         return super.onCompatOptionsItemSelected(item)
     }
diff --git a/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceActivity.kt b/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceActivity.kt
index c94b59d7c..c05294965 100644
--- a/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceActivity.kt
@@ -9,6 +9,7 @@ import android.view.MenuItem
 import android.view.SubMenu
 import androidx.appcompat.widget.PopupMenu
 import androidx.appcompat.widget.SearchView
+import androidx.documentfile.provider.DocumentFile
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.Observer
 import androidx.recyclerview.widget.DiffUtil
@@ -20,14 +21,13 @@ import io.legado.app.R
 import io.legado.app.base.VMBaseActivity
 import io.legado.app.data.entities.BookSource
 import io.legado.app.help.ItemTouchCallback
-import io.legado.app.help.permission.Permissions
-import io.legado.app.help.permission.PermissionsCompat
 import io.legado.app.lib.dialogs.*
 import io.legado.app.lib.theme.ATH
 import io.legado.app.lib.theme.primaryTextColor
 import io.legado.app.service.help.CheckSource
 import io.legado.app.ui.book.source.edit.BookSourceEditActivity
 import io.legado.app.ui.filechooser.FileChooserDialog
+import io.legado.app.ui.filechooser.FilePicker
 import io.legado.app.ui.qrcode.QrCodeActivity
 import io.legado.app.ui.widget.SelectActionBar
 import io.legado.app.ui.widget.recycler.VerticalDivider
@@ -39,7 +39,7 @@ import kotlinx.android.synthetic.main.view_search.*
 import org.jetbrains.anko.startActivity
 import org.jetbrains.anko.startActivityForResult
 import org.jetbrains.anko.toast
-import java.io.FileNotFoundException
+import java.io.File
 
 class BookSourceActivity : VMBaseActivity<BookSourceViewModel>(R.layout.activity_book_source),
     PopupMenu.OnMenuItemClickListener,
@@ -50,7 +50,8 @@ class BookSourceActivity : VMBaseActivity<BookSourceViewModel>(R.layout.activity
         get() = getViewModel(BookSourceViewModel::class.java)
     private val importRecordKey = "bookSourceRecordKey"
     private val qrRequestCode = 101
-    private val importSource = 132
+    private val importRequestCode = 132
+    private val exportRequestCode = 65
     private lateinit var adapter: BookSourceAdapter
     private var bookSourceLiveDate: LiveData<List<BookSource>>? = null
     private var groups = linkedSetOf<String>()
@@ -82,7 +83,8 @@ class BookSourceActivity : VMBaseActivity<BookSourceViewModel>(R.layout.activity
             R.id.menu_import_source_qr -> startActivityForResult<QrCodeActivity>(qrRequestCode)
             R.id.menu_group_manage ->
                 GroupManageDialog().show(supportFragmentManager, "groupManage")
-            R.id.menu_import_source_local -> selectFileSys()
+            R.id.menu_import_source_local -> FilePicker
+                .selectFile(this, importRequestCode, "text/*", arrayOf("txt", "json"))
             R.id.menu_import_source_onLine -> showImportDialog()
         }
         if (item.groupId == R.id.source_group) {
@@ -187,7 +189,7 @@ class BookSourceActivity : VMBaseActivity<BookSourceViewModel>(R.layout.activity
             R.id.menu_disable_selection -> viewModel.disableSelection(adapter.getSelection())
             R.id.menu_enable_explore -> viewModel.enableSelectExplore(adapter.getSelection())
             R.id.menu_disable_explore -> viewModel.disableSelectExplore(adapter.getSelection())
-            R.id.menu_export_selection -> viewModel.exportSelection(adapter.getSelection())
+            R.id.menu_export_selection -> FilePicker.selectFolder(this, exportRequestCode)
             R.id.menu_check_source -> CheckSource.start(this, adapter.getSelection())
         }
         return true
@@ -235,47 +237,10 @@ class BookSourceActivity : VMBaseActivity<BookSourceViewModel>(R.layout.activity
         }.show().applyTint()
     }
 
-    private fun selectFileSys() {
-        try {
-            val intent = Intent(Intent.ACTION_GET_CONTENT)
-            intent.addCategory(Intent.CATEGORY_OPENABLE)
-            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
-            intent.type = "text/*"//设置类型
-            startActivityForResult(intent, importSource)
-        } catch (e: Exception) {
-            PermissionsCompat.Builder(this)
-                .addPermissions(
-                    Permissions.READ_EXTERNAL_STORAGE,
-                    Permissions.WRITE_EXTERNAL_STORAGE
-                )
-                .rationale(R.string.bg_image_per)
-                .onGranted {
-                    selectFile()
-                }
-                .request()
-        }
-    }
-
-    private fun selectFile() {
-        FileChooserDialog.show(
-            supportFragmentManager, importSource,
-            allowExtensions = arrayOf("txt", "json")
-        )
-    }
-
     override fun upCountView() {
         select_action_bar.upCountView(adapter.getSelection().size, adapter.getActualItemCount())
     }
 
-    override fun onFilePicked(requestCode: Int, currentPath: String) {
-        if (requestCode == importSource) {
-            Snackbar.make(title_bar, R.string.importing, Snackbar.LENGTH_INDEFINITE).show()
-            viewModel.importSourceFromFilePath(currentPath) { msg ->
-                title_bar.snackbar(msg)
-            }
-        }
-    }
-
     override fun onQueryTextChange(newText: String?): Boolean {
         newText?.let {
             initLiveDataBookSource(it)
@@ -307,6 +272,21 @@ class BookSourceActivity : VMBaseActivity<BookSourceViewModel>(R.layout.activity
         viewModel.topSource(bookSource)
     }
 
+    override fun onFilePicked(requestCode: Int, currentPath: String) {
+        when (requestCode) {
+            exportRequestCode -> viewModel.exportSelection(
+                adapter.getSelection(),
+                File(currentPath)
+            )
+            importRequestCode -> {
+                Snackbar.make(title_bar, R.string.importing, Snackbar.LENGTH_INDEFINITE).show()
+                viewModel.importSourceFromFilePath(currentPath) { msg ->
+                    title_bar.snackbar(msg)
+                }
+            }
+        }
+    }
+
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
         super.onActivityResult(requestCode, resultCode, data)
         when (requestCode) {
@@ -318,7 +298,7 @@ class BookSourceActivity : VMBaseActivity<BookSourceViewModel>(R.layout.activity
                     }
                 }
             }
-            importSource -> if (resultCode == Activity.RESULT_OK) {
+            importRequestCode -> if (resultCode == Activity.RESULT_OK) {
                 data?.data?.let { uri ->
                     try {
                         uri.readText(this)?.let {
@@ -328,22 +308,24 @@ class BookSourceActivity : VMBaseActivity<BookSourceViewModel>(R.layout.activity
                                 title_bar.snackbar(msg)
                             }
                         }
-                    } catch (e: FileNotFoundException) {
-                        PermissionsCompat.Builder(this)
-                            .addPermissions(
-                                Permissions.READ_EXTERNAL_STORAGE,
-                                Permissions.WRITE_EXTERNAL_STORAGE
-                            )
-                            .rationale(R.string.bg_image_per)
-                            .onGranted {
-                                selectFileSys()
-                            }
-                            .request()
                     } catch (e: Exception) {
                         toast(e.localizedMessage ?: "ERROR")
                     }
                 }
             }
+            exportRequestCode -> {
+                data?.data?.let { uri ->
+                    if (uri.toString().isContentPath()) {
+                        DocumentFile.fromTreeUri(this, uri)?.let {
+                            viewModel.exportSelection(adapter.getSelection(), it)
+                        }
+                    } else {
+                        uri.path?.let {
+                            viewModel.exportSelection(adapter.getSelection(), File(it))
+                        }
+                    }
+                }
+            }
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceViewModel.kt b/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceViewModel.kt
index ec5c50020..85e3239bc 100644
--- a/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceViewModel.kt
@@ -2,6 +2,7 @@ package io.legado.app.ui.book.source.manage
 
 import android.app.Application
 import android.text.TextUtils
+import androidx.documentfile.provider.DocumentFile
 import com.jayway.jsonpath.JsonPath
 import io.legado.app.App
 import io.legado.app.base.BaseViewModel
@@ -89,12 +90,24 @@ class BookSourceViewModel(application: Application) : BaseViewModel(application)
         }
     }
 
-    fun exportSelection(sources: LinkedHashSet<BookSource>) {
+    fun exportSelection(sources: LinkedHashSet<BookSource>, file: File) {
         execute {
             val json = GSON.toJson(sources)
-            val file =
-                FileUtils.createFileIfNotExist(Backup.exportPath + File.separator + "exportBookSource.json")
-            file.writeText(json)
+            FileUtils.createFileIfNotExist(file, "exportBookSource.json")
+                .writeText(json)
+        }.onSuccess {
+            context.toast("成功导出至\n${Backup.exportPath}")
+        }.onError {
+            context.toast("导出失败\n${it.localizedMessage}")
+        }
+    }
+
+    fun exportSelection(sources: LinkedHashSet<BookSource>, doc: DocumentFile) {
+        execute {
+            val json = GSON.toJson(sources)
+            doc.findFile("exportBookSource.json")?.delete()
+            doc.createFile("", "exportBookSource.json")
+                ?.writeText(context, json)
         }.onSuccess {
             context.toast("成功导出至\n${Backup.exportPath}")
         }.onError {
diff --git a/app/src/main/java/io/legado/app/ui/config/BackupRestoreUi.kt b/app/src/main/java/io/legado/app/ui/config/BackupRestoreUi.kt
index f314b5f1b..1bec0a184 100644
--- a/app/src/main/java/io/legado/app/ui/config/BackupRestoreUi.kt
+++ b/app/src/main/java/io/legado/app/ui/config/BackupRestoreUi.kt
@@ -3,7 +3,6 @@ package io.legado.app.ui.config
 import android.app.Activity.RESULT_OK
 import android.content.Intent
 import android.net.Uri
-import android.os.Build
 import androidx.documentfile.provider.DocumentFile
 import androidx.fragment.app.Fragment
 import io.legado.app.App
@@ -17,13 +16,13 @@ import io.legado.app.help.storage.Backup
 import io.legado.app.help.storage.ImportOldData
 import io.legado.app.help.storage.Restore
 import io.legado.app.help.storage.WebDavHelp
-import io.legado.app.lib.dialogs.alert
-import io.legado.app.ui.filechooser.FileChooserDialog
+import io.legado.app.ui.filechooser.FilePicker
 import io.legado.app.utils.getPrefString
 import io.legado.app.utils.isContentPath
 import io.legado.app.utils.toast
 import kotlinx.coroutines.Dispatchers.Main
 import org.jetbrains.anko.toast
+import java.io.File
 
 object BackupRestoreUi {
     private const val selectFolderRequestCode = 21
@@ -79,31 +78,7 @@ object BackupRestoreUi {
     }
 
     fun selectBackupFolder(fragment: Fragment, requestCode: Int = selectFolderRequestCode) {
-        fragment.alert {
-            titleResource = R.string.select_folder
-            items(fragment.resources.getStringArray(R.array.select_folder).toList()) { _, index ->
-                when (index) {
-                    0 -> backupUsePermission(fragment, requestCode = requestCode)
-                    1 -> {
-                        try {
-                            val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE)
-                            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
-                            fragment.startActivityForResult(intent, requestCode)
-                        } catch (e: java.lang.Exception) {
-                            e.printStackTrace()
-                            fragment.toast(e.localizedMessage ?: "ERROR")
-                        }
-                    }
-                    2 -> {
-                        FileChooserDialog.show(
-                            fragment.childFragmentManager,
-                            requestCode,
-                            mode = FileChooserDialog.DIRECTORY
-                        )
-                    }
-                }
-            }
-        }.show()
+        FilePicker.selectFolder(fragment, requestCode)
     }
 
     fun restore(fragment: Fragment) {
@@ -120,13 +95,13 @@ object BackupRestoreUi {
                             Restore.restore(fragment.requireContext(), backupPath)
                             fragment.toast(R.string.restore_success)
                         } else {
-                            selectRestoreFolder(fragment)
+                            selectBackupFolder(fragment, restoreSelectRequestCode)
                         }
                     } else {
                         restoreUsePermission(fragment, backupPath)
                     }
                 } else {
-                    selectRestoreFolder(fragment)
+                    selectBackupFolder(fragment, restoreSelectRequestCode)
                 }
             }
         }
@@ -147,79 +122,8 @@ object BackupRestoreUi {
             .request()
     }
 
-    private fun selectRestoreFolder(fragment: Fragment) {
-        fragment.alert {
-            titleResource = R.string.select_folder
-            items(fragment.resources.getStringArray(R.array.select_folder).toList()) { _, index ->
-                when (index) {
-                    0 -> restoreUsePermission(fragment)
-                    1 -> {
-                        try {
-                            val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE)
-                            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
-                            fragment.startActivityForResult(intent, restoreSelectRequestCode)
-                        } catch (e: java.lang.Exception) {
-                            e.printStackTrace()
-                            fragment.toast(e.localizedMessage ?: "ERROR")
-                        }
-                    }
-                    2 -> {
-                        FileChooserDialog.show(
-                            fragment.childFragmentManager,
-                            restoreSelectRequestCode,
-                            mode = FileChooserDialog.DIRECTORY
-                        )
-                    }
-                }
-            }
-        }.show()
-    }
-
     fun importOldData(fragment: Fragment) {
-        fragment.alert {
-            titleResource = R.string.select_folder
-            items(fragment.resources.getStringArray(R.array.select_folder).toList()) { _, index ->
-                when (index) {
-                    0 -> importOldUsePermission(fragment)
-                    1 -> {
-                        try {
-                            val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE)
-                            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
-                            fragment.startActivityForResult(intent, oldDataRequestCode)
-                        } catch (e: java.lang.Exception) {
-                            e.printStackTrace()
-                            fragment.toast(e.localizedMessage ?: "ERROR")
-                        }
-                    }
-                    2 -> {
-                        PermissionsCompat.Builder(fragment)
-                            .addPermissions(*Permissions.Group.STORAGE)
-                            .rationale(R.string.tip_perm_request_storage)
-                            .onGranted {
-                                FileChooserDialog.show(
-                                    fragment.childFragmentManager,
-                                    oldDataRequestCode,
-                                    mode = FileChooserDialog.DIRECTORY
-                                )
-                            }
-                            .request()
-                    }
-                }
-            }
-        }.show()
-    }
-
-    private fun importOldUsePermission(fragment: Fragment) {
-        if (Build.VERSION.SDK_INT > Build.VERSION_CODES.P) {
-            fragment.toast(R.string.a10_permission_toast)
-        }
-        PermissionsCompat.Builder(fragment)
-            .addPermissions(*Permissions.Group.STORAGE)
-            .rationale(R.string.tip_perm_request_storage)
-            .onGranted {
-                ImportOldData.import(fragment.requireContext())
-            }
-            .request()
+        FilePicker.selectFolder(fragment, oldDataRequestCode)
     }
 
     fun onFilePicked(requestCode: Int, currentPath: String) {
@@ -243,6 +147,9 @@ object BackupRestoreUi {
             selectFolderRequestCode -> {
                 AppConfig.backupPath = currentPath
             }
+            oldDataRequestCode -> {
+                ImportOldData.import(App.INSTANCE, File(currentPath))
+            }
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt b/app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt
index 31c3d709f..e8ea335c0 100644
--- a/app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt
+++ b/app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt
@@ -16,12 +16,10 @@ import io.legado.app.constant.EventBus
 import io.legado.app.constant.PreferKey
 import io.legado.app.help.AppConfig
 import io.legado.app.help.BookHelp
-import io.legado.app.help.permission.Permissions
-import io.legado.app.help.permission.PermissionsCompat
-import io.legado.app.lib.dialogs.alert
 import io.legado.app.lib.theme.ATH
 import io.legado.app.receiver.SharedReceiverActivity
 import io.legado.app.ui.filechooser.FileChooserDialog
+import io.legado.app.ui.filechooser.FilePicker
 import io.legado.app.ui.widget.number.NumberPickerDialog
 import io.legado.app.utils.*
 
@@ -124,38 +122,9 @@ class OtherConfigFragment : PreferenceFragmentCompat(),
     }
 
     private fun selectDownloadPath() {
-        alert {
-            titleResource = R.string.select_folder
-            items(resources.getStringArray(R.array.select_folder).toList()) { _, i ->
-                when (i) {
-                    0 -> {
-                        removePref(PreferKey.downloadPath)
-                    }
-                    1 -> {
-                        try {
-                            val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE)
-                            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
-                            startActivityForResult(intent, requestCodeDownloadPath)
-                        } catch (e: Exception) {
-                            e.printStackTrace()
-                            toast(e.localizedMessage ?: "ERROR")
-                        }
-                    }
-                    2 -> PermissionsCompat.Builder(this@OtherConfigFragment)
-                        .addPermissions(*Permissions.Group.STORAGE)
-                        .rationale(R.string.tip_perm_request_storage)
-                        .onGranted {
-                            FileChooserDialog.show(
-                                childFragmentManager,
-                                requestCodeDownloadPath,
-                                mode = FileChooserDialog.DIRECTORY,
-                                initPath = BookHelp.downloadPath
-                            )
-                        }
-                        .request()
-                }
-            }
-        }.show()
+        FilePicker.selectFolder(this, requestCodeDownloadPath) {
+            removePref(PreferKey.downloadPath)
+        }
     }
 
     override fun onFilePicked(requestCode: Int, currentPath: String) {
diff --git a/app/src/main/java/io/legado/app/ui/config/ThemeConfigFragment.kt b/app/src/main/java/io/legado/app/ui/config/ThemeConfigFragment.kt
index 1a1851ca1..0652350c5 100644
--- a/app/src/main/java/io/legado/app/ui/config/ThemeConfigFragment.kt
+++ b/app/src/main/java/io/legado/app/ui/config/ThemeConfigFragment.kt
@@ -52,7 +52,10 @@ class ThemeConfigFragment : PreferenceFragmentCompat(), SharedPreferences.OnShar
             "transparentStatusBar" -> {
                 recreateActivities()
             }
-            "colorPrimary", "colorAccent", "colorBackground" -> {
+            "colorPrimary",
+            "colorAccent",
+            "colorBackground",
+            "colorBottomBackground" -> {
                 if (backgroundIsDark(sharedPreferences)) {
                     alert {
                         title = "白天背景太暗"
@@ -73,7 +76,10 @@ class ThemeConfigFragment : PreferenceFragmentCompat(), SharedPreferences.OnShar
                     upTheme(false)
                 }
             }
-            "colorPrimaryNight", "colorAccentNight", "colorBackgroundNight" -> {
+            "colorPrimaryNight",
+            "colorAccentNight",
+            "colorBackgroundNight",
+            "colorBottomBackgroundNight" -> {
                 if (backgroundIsLight(sharedPreferences)) {
                     alert {
                         title = "夜间背景太亮"
diff --git a/app/src/main/java/io/legado/app/ui/download/DownloadActivity.kt b/app/src/main/java/io/legado/app/ui/download/DownloadActivity.kt
index ef1d87e68..cdcbf9746 100644
--- a/app/src/main/java/io/legado/app/ui/download/DownloadActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/download/DownloadActivity.kt
@@ -16,17 +16,15 @@ import io.legado.app.constant.EventBus
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookChapter
 import io.legado.app.help.BookHelp
-import io.legado.app.help.permission.Permissions
-import io.legado.app.help.permission.PermissionsCompat
 import io.legado.app.service.help.Download
 import io.legado.app.ui.filechooser.FileChooserDialog
+import io.legado.app.ui.filechooser.FilePicker
 import io.legado.app.utils.*
 import kotlinx.android.synthetic.main.activity_download.*
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
-import org.jetbrains.anko.alert
 import org.jetbrains.anko.toast
 
 
@@ -126,44 +124,14 @@ class DownloadActivity : VMBaseActivity<DownloadViewModel>(R.layout.activity_dow
 
     override fun export(position: Int) {
         exportPosition = position
-        alert {
-            titleResource = R.string.select_folder
-            items(resources.getStringArray(R.array.select_folder).toList()) { _, index ->
-                when (index) {
-                    0 -> {
-                        val path = ACache.get(this@DownloadActivity).getAsString(exportBookPathKey)
-                        if (path.isNullOrEmpty()) {
-                            toast("没有默认路径")
-                        } else {
-                            startExport(path)
-                        }
-                    }
-                    1 -> {
-                        try {
-                            val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE)
-                            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
-                            startActivityForResult(intent, exportRequestCode)
-                        } catch (e: java.lang.Exception) {
-                            e.printStackTrace()
-                            toast(e.localizedMessage ?: "ERROR")
-                        }
-                    }
-                    2 -> {
-                        PermissionsCompat.Builder(this@DownloadActivity)
-                            .addPermissions(*Permissions.Group.STORAGE)
-                            .rationale(R.string.tip_perm_request_storage)
-                            .onGranted {
-                                FileChooserDialog.show(
-                                    supportFragmentManager,
-                                    exportRequestCode,
-                                    mode = FileChooserDialog.DIRECTORY
-                                )
-                            }
-                            .request()
-                    }
-                }
+        FilePicker.selectFolder(this, exportRequestCode) {
+            val path = ACache.get(this@DownloadActivity).getAsString(exportBookPathKey)
+            if (path.isNullOrEmpty()) {
+                toast("没有默认路径")
+            } else {
+                startExport(path)
             }
-        }.show()
+        }
     }
 
     private fun startExport(path: String) {
diff --git a/app/src/main/java/io/legado/app/ui/filechooser/FileChooserDialog.kt b/app/src/main/java/io/legado/app/ui/filechooser/FileChooserDialog.kt
index af8cf50f4..f1e6a7bc9 100644
--- a/app/src/main/java/io/legado/app/ui/filechooser/FileChooserDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/filechooser/FileChooserDialog.kt
@@ -42,7 +42,7 @@ class FileChooserDialog : DialogFragment(),
             isShowHomeDir: Boolean = false,
             isShowUpDir: Boolean = true,
             isShowHideDir: Boolean = false,
-            allowExtensions: Array<String?>? = null,
+            allowExtensions: Array<String>? = null,
             menus: Array<String>? = null
         ) {
             FileChooserDialog().apply {
@@ -61,7 +61,7 @@ class FileChooserDialog : DialogFragment(),
         }
     }
 
-    override var allowExtensions: Array<String?>? = null
+    override var allowExtensions: Array<String>? = null
     override val isOnlyListDir: Boolean
         get() = mode == DIRECTORY
     override var isShowHomeDir: Boolean = false
diff --git a/app/src/main/java/io/legado/app/ui/filechooser/FilePicker.kt b/app/src/main/java/io/legado/app/ui/filechooser/FilePicker.kt
new file mode 100644
index 000000000..9260fc8bd
--- /dev/null
+++ b/app/src/main/java/io/legado/app/ui/filechooser/FilePicker.kt
@@ -0,0 +1,191 @@
+package io.legado.app.ui.filechooser
+
+import android.content.Intent
+import androidx.appcompat.app.AppCompatActivity
+import androidx.fragment.app.Fragment
+import io.legado.app.R
+import io.legado.app.base.BaseActivity
+import io.legado.app.help.permission.Permissions
+import io.legado.app.help.permission.PermissionsCompat
+import io.legado.app.lib.dialogs.alert
+import io.legado.app.utils.toast
+import org.jetbrains.anko.toast
+
+@Suppress("unused")
+object FilePicker {
+
+    fun selectFolder(activity: AppCompatActivity, requestCode: Int, default: (() -> Unit)? = null) {
+        activity.alert(titleResource = R.string.select_folder) {
+            val selectList =
+                activity.resources.getStringArray(R.array.select_folder).toMutableList()
+            default ?: let {
+                selectList.removeAt(0)
+            }
+            items(selectList) { _, index ->
+                when (if (default == null) index + 1 else index) {
+                    0 -> default?.invoke()
+                    1 -> {
+                        try {
+                            val intent = getSelectDirIntent()
+                            activity.startActivityForResult(intent, requestCode)
+                        } catch (e: java.lang.Exception) {
+                            e.printStackTrace()
+                            activity.toast(e.localizedMessage ?: "ERROR")
+                        }
+                    }
+                    2 -> checkPermissions(activity) {
+                        FileChooserDialog.show(
+                            activity.supportFragmentManager,
+                            requestCode,
+                            mode = FileChooserDialog.DIRECTORY
+                        )
+                    }
+                }
+            }
+        }.show()
+    }
+
+    fun selectFolder(fragment: Fragment, requestCode: Int, default: (() -> Unit)? = null) {
+        fragment.requireContext()
+            .alert(titleResource = R.string.select_folder) {
+                val selectList =
+                    fragment.resources.getStringArray(R.array.select_folder).toMutableList()
+                default ?: let {
+                    selectList.removeAt(0)
+                }
+                items(selectList) { _, index ->
+                    when (if (default == null) index + 1 else index) {
+                        0 -> default?.invoke()
+                        1 -> {
+                            try {
+                                val intent = getSelectDirIntent()
+                                fragment.startActivityForResult(intent, requestCode)
+                            } catch (e: java.lang.Exception) {
+                                e.printStackTrace()
+                                fragment.toast(e.localizedMessage ?: "ERROR")
+                            }
+                        }
+                        2 -> checkPermissions(fragment) {
+                            FileChooserDialog.show(
+                                fragment.childFragmentManager,
+                                requestCode,
+                                mode = FileChooserDialog.DIRECTORY
+                            )
+                        }
+                    }
+                }
+            }.show()
+    }
+
+    fun selectFile(
+        activity: BaseActivity,
+        requestCode: Int,
+        type: String,
+        allowExtensions: Array<String>?,
+        default: (() -> Unit)? = null
+    ) {
+        activity.alert(titleResource = R.string.select_file) {
+            val selectList =
+                activity.resources.getStringArray(R.array.select_folder).toMutableList()
+            default ?: let {
+                selectList.removeAt(0)
+            }
+            items(selectList) { _, index ->
+                when (if (default == null) index + 1 else index) {
+                    0 -> default?.invoke()
+                    1 -> {
+                        try {
+                            val intent = getSelectFileIntent()
+                            intent.type = type//设置类型
+                            activity.startActivityForResult(intent, requestCode)
+                        } catch (e: java.lang.Exception) {
+                            e.printStackTrace()
+                            activity.toast(e.localizedMessage ?: "ERROR")
+                        }
+                    }
+                    2 -> checkPermissions(activity) {
+                        FileChooserDialog.show(
+                            activity.supportFragmentManager,
+                            requestCode,
+                            mode = FileChooserDialog.FILE,
+                            allowExtensions = allowExtensions
+                        )
+                    }
+                }
+            }
+        }.show()
+    }
+
+    fun selectFile(
+        fragment: Fragment,
+        requestCode: Int,
+        type: String,
+        allowExtensions: Array<String>,
+        default: (() -> Unit)? = null
+    ) {
+        fragment.requireContext()
+            .alert(titleResource = R.string.select_file) {
+                val selectList =
+                    fragment.resources.getStringArray(R.array.select_folder).toMutableList()
+                default ?: let {
+                    selectList.removeAt(0)
+                }
+                items(selectList) { _, index ->
+                    when (if (default == null) index + 1 else index) {
+                        0 -> default?.invoke()
+                        1 -> {
+                            try {
+                                val intent = getSelectFileIntent()
+                                intent.type = type//设置类型
+                                fragment.startActivityForResult(intent, requestCode)
+                            } catch (e: java.lang.Exception) {
+                                e.printStackTrace()
+                                fragment.toast(e.localizedMessage ?: "ERROR")
+                            }
+                        }
+                        2 -> checkPermissions(fragment) {
+                            FileChooserDialog.show(
+                                fragment.childFragmentManager,
+                                requestCode,
+                                mode = FileChooserDialog.FILE,
+                                allowExtensions = allowExtensions
+                            )
+                        }
+                    }
+                }
+            }.show()
+    }
+
+    private fun getSelectFileIntent(): Intent {
+        val intent = Intent(Intent.ACTION_GET_CONTENT)
+        intent.addCategory(Intent.CATEGORY_OPENABLE)
+        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+        return intent
+    }
+
+    private fun getSelectDirIntent(): Intent {
+        val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE)
+        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+        return intent
+    }
+
+    private fun checkPermissions(fragment: Fragment, success: (() -> Unit)? = null) {
+        PermissionsCompat.Builder(fragment)
+            .addPermissions(*Permissions.Group.STORAGE)
+            .rationale(R.string.tip_perm_request_storage)
+            .onGranted {
+                success?.invoke()
+            }
+            .request()
+    }
+
+    private fun checkPermissions(activity: AppCompatActivity, success: (() -> Unit)? = null) {
+        PermissionsCompat.Builder(activity)
+            .addPermissions(*Permissions.Group.STORAGE)
+            .rationale(R.string.tip_perm_request_storage)
+            .onGranted {
+                success?.invoke()
+            }
+            .request()
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/ui/filechooser/adapter/FileAdapter.kt b/app/src/main/java/io/legado/app/ui/filechooser/adapter/FileAdapter.kt
index 4ade6da7f..42e34dfb1 100644
--- a/app/src/main/java/io/legado/app/ui/filechooser/adapter/FileAdapter.kt
+++ b/app/src/main/java/io/legado/app/ui/filechooser/adapter/FileAdapter.kt
@@ -6,9 +6,9 @@ import android.graphics.drawable.Drawable
 import io.legado.app.R
 import io.legado.app.base.adapter.ItemViewHolder
 import io.legado.app.base.adapter.SimpleRecyclerAdapter
-import io.legado.app.ui.filechooser.FilePickerIcon
 import io.legado.app.ui.filechooser.entity.FileItem
 import io.legado.app.ui.filechooser.utils.ConvertUtils
+import io.legado.app.ui.filechooser.utils.FilePickerIcon
 import io.legado.app.ui.filechooser.utils.FileUtils
 import kotlinx.android.synthetic.main.item_path_filepicker.view.*
 import org.jetbrains.anko.sdk27.listeners.onClick
@@ -122,7 +122,7 @@ class FileAdapter(context: Context, val callBack: CallBack) :
     interface CallBack {
         fun onFileClick(position: Int)
         //允许的扩展名
-        var allowExtensions: Array<String?>?
+        var allowExtensions: Array<String>?
         /**
          * 是否仅仅读取目录
          */
diff --git a/app/src/main/java/io/legado/app/ui/filechooser/adapter/PathAdapter.kt b/app/src/main/java/io/legado/app/ui/filechooser/adapter/PathAdapter.kt
index 3d2323495..86ccf67c0 100644
--- a/app/src/main/java/io/legado/app/ui/filechooser/adapter/PathAdapter.kt
+++ b/app/src/main/java/io/legado/app/ui/filechooser/adapter/PathAdapter.kt
@@ -5,8 +5,8 @@ import android.os.Environment
 import io.legado.app.R
 import io.legado.app.base.adapter.ItemViewHolder
 import io.legado.app.base.adapter.SimpleRecyclerAdapter
-import io.legado.app.ui.filechooser.FilePickerIcon
 import io.legado.app.ui.filechooser.utils.ConvertUtils
+import io.legado.app.ui.filechooser.utils.FilePickerIcon
 import kotlinx.android.synthetic.main.item_path_filepicker.view.*
 import org.jetbrains.anko.sdk27.listeners.onClick
 import java.util.*
diff --git a/app/src/main/java/io/legado/app/ui/filechooser/FilePickerIcon.java b/app/src/main/java/io/legado/app/ui/filechooser/utils/FilePickerIcon.java
similarity index 99%
rename from app/src/main/java/io/legado/app/ui/filechooser/FilePickerIcon.java
rename to app/src/main/java/io/legado/app/ui/filechooser/utils/FilePickerIcon.java
index 4ab481938..6732626e4 100644
--- a/app/src/main/java/io/legado/app/ui/filechooser/FilePickerIcon.java
+++ b/app/src/main/java/io/legado/app/ui/filechooser/utils/FilePickerIcon.java
@@ -1,4 +1,4 @@
-package io.legado.app.ui.filechooser;
+package io.legado.app.ui.filechooser.utils;
 
 /**
  * Generated by https://github.com/gzu-liyujiang/Image2ByteVar
diff --git a/app/src/main/java/io/legado/app/ui/filechooser/utils/FileUtils.kt b/app/src/main/java/io/legado/app/ui/filechooser/utils/FileUtils.kt
index 309dee0a2..e7e2a4805 100644
--- a/app/src/main/java/io/legado/app/ui/filechooser/utils/FileUtils.kt
+++ b/app/src/main/java/io/legado/app/ui/filechooser/utils/FileUtils.kt
@@ -60,7 +60,7 @@ object FileUtils {
     @JvmOverloads
     fun listDirs(
         startDirPath: String,
-        excludeDirs: Array<String?>? = null, @SortType sortType: Int = BY_NAME_ASC
+        excludeDirs: Array<String>? = null, @SortType sortType: Int = BY_NAME_ASC
     ): Array<File?> {
         var excludeDirs1 = excludeDirs
         val dirList = ArrayList<File>()
@@ -76,7 +76,7 @@ object FileUtils {
         })
             ?: return arrayOfNulls(0)
         if (excludeDirs1 == null) {
-            excludeDirs1 = arrayOfNulls(0)
+            excludeDirs1 = arrayOf()
         }
         for (dir in dirs) {
             val file = dir.absoluteFile
@@ -115,7 +115,7 @@ object FileUtils {
     @JvmOverloads
     fun listDirsAndFiles(
         startDirPath: String,
-        allowExtensions: Array<String?>? = null
+        allowExtensions: Array<String>? = null
     ): Array<File?>? {
         val dirs: Array<File?>?
         val files: Array<File?>? = if (allowExtensions == null) {
@@ -189,12 +189,13 @@ object FileUtils {
     /**
      * 列出指定目录下的所有文件
      */
-    fun listFiles(startDirPath: String, allowExtensions: Array<String?>): Array<File?>? {
+    fun listFiles(startDirPath: String, allowExtensions: Array<String>?): Array<File?>? {
         val file = File(startDirPath)
         return file.listFiles { _, name ->
             //返回当前目录所有以某些扩展名结尾的文件
             val extension = getExtension(name)
-            allowExtensions.contentDeepToString().contains(extension)
+            allowExtensions?.contentDeepToString()?.contains(extension) == true
+                    || allowExtensions == null
         }
     }
 
@@ -202,7 +203,10 @@ object FileUtils {
      * 列出指定目录下的所有文件
      */
     fun listFiles(startDirPath: String, allowExtension: String?): Array<File?>? {
-        return listFiles(startDirPath, arrayOf(allowExtension))
+        return if (allowExtension == null)
+            listFiles(startDirPath, allowExtension = null)
+        else
+            listFiles(startDirPath, arrayOf(allowExtension))
     }
 
     /**
diff --git a/app/src/main/java/io/legado/app/ui/login/SourceLogin.kt b/app/src/main/java/io/legado/app/ui/login/SourceLogin.kt
index d4e9c2e4e..35a62200c 100644
--- a/app/src/main/java/io/legado/app/ui/login/SourceLogin.kt
+++ b/app/src/main/java/io/legado/app/ui/login/SourceLogin.kt
@@ -1,14 +1,79 @@
 package io.legado.app.ui.login
 
+import android.annotation.SuppressLint
+import android.graphics.Bitmap
 import android.os.Bundle
+import android.view.Menu
+import android.view.MenuItem
+import android.webkit.CookieManager
+import android.webkit.WebView
+import android.webkit.WebViewClient
 import io.legado.app.R
 import io.legado.app.base.BaseActivity
+import io.legado.app.help.http.CookieStore
+import io.legado.app.utils.snackbar
+import kotlinx.android.synthetic.main.activity_source_login.*
 
 
 class SourceLogin : BaseActivity(R.layout.activity_source_login) {
 
+    var sourceUrl: String? = null
+    var loginUrl: String? = null
+    var checking = false
+
     override fun onActivityCreated(savedInstanceState: Bundle?) {
+        sourceUrl = intent.getStringExtra("sourceUrl")
+        loginUrl = intent.getStringExtra("loginUrl")
+        title = getString(R.string.login_source, sourceUrl)
+        initWebView()
+    }
+
+    @SuppressLint("SetJavaScriptEnabled")
+    private fun initWebView() {
+        val settings = web_view.settings
+        settings.setSupportZoom(true)
+        settings.builtInZoomControls = true
+        settings.javaScriptEnabled = true
+        val cookieManager = CookieManager.getInstance()
+        web_view.webViewClient = object : WebViewClient() {
+            override fun onPageStarted(view: WebView?, url: String?, favicon: Bitmap?) {
+                val cookie = cookieManager.getCookie(url)
+                sourceUrl?.let {
+                    CookieStore.setCookie(it, cookie)
+                }
+                super.onPageStarted(view, url, favicon)
+            }
+
+            override fun onPageFinished(view: WebView?, url: String?) {
+                val cookie = cookieManager.getCookie(url)
+                sourceUrl?.let {
+                    CookieStore.setCookie(it, cookie)
+                }
+                if (checking) {
+                    finish()
+                }
+                super.onPageFinished(view, url)
+            }
+        }
+        web_view.loadUrl(loginUrl)
+    }
+
+    override fun onCompatCreateOptionsMenu(menu: Menu): Boolean {
+        menuInflater.inflate(R.menu.source_login, menu)
+        return super.onCompatCreateOptionsMenu(menu)
+    }
 
+    override fun onCompatOptionsItemSelected(item: MenuItem): Boolean {
+        when (item.itemId) {
+            R.id.menu_success -> {
+                if (!checking) {
+                    checking = true
+                    title_bar.snackbar(R.string.check_host_cookie)
+                    web_view.loadUrl(sourceUrl)
+                }
+            }
+        }
+        return super.onCompatOptionsItemSelected(item)
     }
 
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/ui/main/MainActivity.kt b/app/src/main/java/io/legado/app/ui/main/MainActivity.kt
index 38569115b..8b4705ae0 100644
--- a/app/src/main/java/io/legado/app/ui/main/MainActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/main/MainActivity.kt
@@ -7,7 +7,6 @@ import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentManager
 import androidx.fragment.app.FragmentStatePagerAdapter
 import androidx.viewpager.widget.ViewPager
-import com.github.houbb.opencc4j.util.ZhConverterUtil
 import com.google.android.material.bottomnavigation.BottomNavigationView
 import io.legado.app.App
 import io.legado.app.BuildConfig
@@ -16,7 +15,6 @@ import io.legado.app.base.VMBaseActivity
 import io.legado.app.constant.EventBus
 import io.legado.app.constant.PreferKey
 import io.legado.app.help.AppConfig
-import io.legado.app.help.coroutine.Coroutine
 import io.legado.app.help.storage.Backup
 import io.legado.app.lib.theme.ATH
 import io.legado.app.service.BaseReadAloudService
@@ -53,21 +51,12 @@ class MainActivity : VMBaseActivity<MainViewModel>(R.layout.activity_main),
     override fun onPostCreate(savedInstanceState: Bundle?) {
         super.onPostCreate(savedInstanceState)
         upVersion()
-        //初始化简繁转换引擎
-        when (AppConfig.chineseConverterType) {
-            1 -> Coroutine.async { ZhConverterUtil.toSimple("初始化") }
-            2 -> Coroutine.async { ZhConverterUtil.toTraditional("初始化") }
-        }
         //自动更新书籍
         if (AppConfig.autoRefreshBook) {
             view_pager_main.postDelayed({
                 viewModel.upChapterList()
             }, 1000)
         }
-        //清楚过期数据
-        view_pager_main.postDelayed({
-            viewModel.clearExpiredData()
-        }, 3000)
     }
 
     override fun onNavigationItemSelected(item: MenuItem): Boolean {
diff --git a/app/src/main/java/io/legado/app/ui/main/MainViewModel.kt b/app/src/main/java/io/legado/app/ui/main/MainViewModel.kt
index 1a0652bae..4fe57d758 100644
--- a/app/src/main/java/io/legado/app/ui/main/MainViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/main/MainViewModel.kt
@@ -13,7 +13,6 @@ import io.legado.app.utils.fromJsonObject
 import io.legado.app.utils.postEvent
 import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.delay
-import java.util.concurrent.TimeUnit
 
 class MainViewModel(application: Application) : BaseViewModel(application) {
     val updateList = hashSetOf<String>()
@@ -54,13 +53,6 @@ class MainViewModel(application: Application) : BaseViewModel(application) {
         }
     }
 
-    fun clearExpiredData() {
-        execute {
-            App.db.searchBookDao()
-                .clearExpired(System.currentTimeMillis() - TimeUnit.DAYS.toMillis(1))
-        }
-    }
-
     fun initRss() {
         execute {
             val url = "https://gitee.com/alanskycn/yuedu/raw/master/JS/RSS/rssSource"
diff --git a/app/src/main/java/io/legado/app/ui/replacerule/ReplaceRuleActivity.kt b/app/src/main/java/io/legado/app/ui/replacerule/ReplaceRuleActivity.kt
index 5044e2667..e5be539c5 100644
--- a/app/src/main/java/io/legado/app/ui/replacerule/ReplaceRuleActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/replacerule/ReplaceRuleActivity.kt
@@ -9,6 +9,7 @@ import android.view.MenuItem
 import android.view.SubMenu
 import androidx.appcompat.widget.PopupMenu
 import androidx.appcompat.widget.SearchView
+import androidx.documentfile.provider.DocumentFile
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.Observer
 import androidx.recyclerview.widget.DiffUtil
@@ -19,13 +20,14 @@ import io.legado.app.App
 import io.legado.app.R
 import io.legado.app.base.VMBaseActivity
 import io.legado.app.data.entities.ReplaceRule
+import io.legado.app.help.BookHelp
 import io.legado.app.help.ItemTouchCallback
-import io.legado.app.help.permission.Permissions
-import io.legado.app.help.permission.PermissionsCompat
+import io.legado.app.help.coroutine.Coroutine
 import io.legado.app.lib.dialogs.*
 import io.legado.app.lib.theme.ATH
 import io.legado.app.lib.theme.primaryTextColor
 import io.legado.app.ui.filechooser.FileChooserDialog
+import io.legado.app.ui.filechooser.FilePicker
 import io.legado.app.ui.replacerule.edit.ReplaceEditDialog
 import io.legado.app.ui.widget.SelectActionBar
 import io.legado.app.ui.widget.recycler.VerticalDivider
@@ -36,7 +38,6 @@ import kotlinx.android.synthetic.main.dialog_edit_text.view.*
 import kotlinx.android.synthetic.main.view_search.*
 import org.jetbrains.anko.toast
 import java.io.File
-import java.io.FileNotFoundException
 
 
 class ReplaceRuleActivity : VMBaseActivity<ReplaceRuleViewModel>(R.layout.activity_replace_rule),
@@ -47,7 +48,8 @@ class ReplaceRuleActivity : VMBaseActivity<ReplaceRuleViewModel>(R.layout.activi
     override val viewModel: ReplaceRuleViewModel
         get() = getViewModel(ReplaceRuleViewModel::class.java)
     private val importRecordKey = "replaceRuleRecordKey"
-    private val importSource = 132
+    private val importRequestCode = 132
+    private val exportRequestCode = 65
     private lateinit var adapter: ReplaceRuleAdapter
     private var groups = hashSetOf<String>()
     private var groupMenu: SubMenu? = null
@@ -177,7 +179,8 @@ class ReplaceRuleActivity : VMBaseActivity<ReplaceRuleViewModel>(R.layout.activi
 
             R.id.menu_del_selection -> viewModel.delSelection(adapter.getSelection())
             R.id.menu_import_source_onLine -> showImportDialog()
-            R.id.menu_import_source_local -> selectFileSys()
+            R.id.menu_import_source_local -> FilePicker
+                .selectFile(this, importRequestCode, "text/*", arrayOf("txt", "json"))
         }
         return super.onCompatOptionsItemSelected(item)
     }
@@ -186,7 +189,7 @@ class ReplaceRuleActivity : VMBaseActivity<ReplaceRuleViewModel>(R.layout.activi
         when (item?.itemId) {
             R.id.menu_enable_selection -> viewModel.enableSelection(adapter.getSelection())
             R.id.menu_disable_selection -> viewModel.disableSelection(adapter.getSelection())
-            R.id.menu_export_selection -> viewModel.exportSelection(adapter.getSelection())
+            R.id.menu_export_selection -> FilePicker.selectFolder(this, exportRequestCode)
         }
         return false
     }
@@ -233,43 +236,6 @@ class ReplaceRuleActivity : VMBaseActivity<ReplaceRuleViewModel>(R.layout.activi
         }.show().applyTint()
     }
 
-    private fun selectFileSys() {
-        try {
-            val intent = Intent(Intent.ACTION_GET_CONTENT)
-            intent.addCategory(Intent.CATEGORY_OPENABLE)
-            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
-            intent.type = "text/*"//设置类型
-            startActivityForResult(intent, importSource)
-        } catch (e: Exception) {
-            PermissionsCompat.Builder(this)
-                .addPermissions(
-                    Permissions.READ_EXTERNAL_STORAGE,
-                    Permissions.WRITE_EXTERNAL_STORAGE
-                )
-                .rationale(R.string.bg_image_per)
-                .onGranted {
-                    selectFile()
-                }
-                .request()
-        }
-    }
-
-    private fun selectFile() {
-        FileChooserDialog.show(
-            supportFragmentManager, importSource,
-            allowExtensions = arrayOf("txt", "json")
-        )
-    }
-
-    override fun onFilePicked(requestCode: Int, currentPath: String) {
-        if (requestCode == importSource) {
-            Snackbar.make(title_bar, R.string.importing, Snackbar.LENGTH_INDEFINITE).show()
-            viewModel.importSource(File(currentPath).readText()) { msg ->
-                title_bar.snackbar(msg)
-            }
-        }
-    }
-
     override fun onQueryTextChange(newText: String?): Boolean {
         observeReplaceRuleData("%$newText%")
         return false
@@ -279,10 +245,25 @@ class ReplaceRuleActivity : VMBaseActivity<ReplaceRuleViewModel>(R.layout.activi
         return false
     }
 
+    override fun onFilePicked(requestCode: Int, currentPath: String) {
+        when (requestCode) {
+            importRequestCode -> {
+                Snackbar.make(title_bar, R.string.importing, Snackbar.LENGTH_INDEFINITE).show()
+                viewModel.importSource(File(currentPath).readText()) { msg ->
+                    title_bar.snackbar(msg)
+                }
+            }
+            exportRequestCode -> viewModel.exportSelection(
+                adapter.getSelection(),
+                File(currentPath)
+            )
+        }
+    }
+
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
         super.onActivityResult(requestCode, resultCode, data)
         when (requestCode) {
-            importSource -> if (resultCode == Activity.RESULT_OK) {
+            importRequestCode -> if (resultCode == Activity.RESULT_OK) {
                 data?.data?.let { uri ->
                     try {
                         uri.readText(this)?.let {
@@ -292,25 +273,32 @@ class ReplaceRuleActivity : VMBaseActivity<ReplaceRuleViewModel>(R.layout.activi
                                 title_bar.snackbar(msg)
                             }
                         }
-                    } catch (e: FileNotFoundException) {
-                        PermissionsCompat.Builder(this)
-                            .addPermissions(
-                                Permissions.READ_EXTERNAL_STORAGE,
-                                Permissions.WRITE_EXTERNAL_STORAGE
-                            )
-                            .rationale(R.string.bg_image_per)
-                            .onGranted {
-                                selectFileSys()
-                            }
-                            .request()
                     } catch (e: Exception) {
                         toast(e.localizedMessage ?: "ERROR")
                     }
                 }
             }
+            exportRequestCode -> if (resultCode == RESULT_OK) {
+                data?.data?.let { uri ->
+                    if (uri.toString().isContentPath()) {
+                        DocumentFile.fromTreeUri(this, uri)?.let {
+                            viewModel.exportSelection(adapter.getSelection(), it)
+                        }
+                    } else {
+                        uri.path?.let {
+                            viewModel.exportSelection(adapter.getSelection(), File(it))
+                        }
+                    }
+                }
+            }
         }
     }
 
+    override fun onDestroy() {
+        super.onDestroy()
+        Coroutine.async { BookHelp.upReplaceRules() }
+    }
+
     override fun upCountView() {
         select_action_bar.upCountView(adapter.getSelection().size, adapter.getActualItemCount())
     }
diff --git a/app/src/main/java/io/legado/app/ui/replacerule/ReplaceRuleViewModel.kt b/app/src/main/java/io/legado/app/ui/replacerule/ReplaceRuleViewModel.kt
index 42217ec18..a63d7ea38 100644
--- a/app/src/main/java/io/legado/app/ui/replacerule/ReplaceRuleViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/replacerule/ReplaceRuleViewModel.kt
@@ -2,6 +2,7 @@ package io.legado.app.ui.replacerule
 
 import android.app.Application
 import android.text.TextUtils
+import androidx.documentfile.provider.DocumentFile
 import io.legado.app.App
 import io.legado.app.R
 import io.legado.app.base.BaseViewModel
@@ -9,10 +10,7 @@ import io.legado.app.data.entities.ReplaceRule
 import io.legado.app.help.http.HttpHelper
 import io.legado.app.help.storage.Backup
 import io.legado.app.help.storage.ImportOldData
-import io.legado.app.utils.FileUtils
-import io.legado.app.utils.GSON
-import io.legado.app.utils.isAbsUrl
-import io.legado.app.utils.splitNotBlank
+import io.legado.app.utils.*
 import org.jetbrains.anko.toast
 import java.io.File
 
@@ -89,12 +87,24 @@ class ReplaceRuleViewModel(application: Application) : BaseViewModel(application
         }
     }
 
-    fun exportSelection(rules: LinkedHashSet<ReplaceRule>) {
+    fun exportSelection(sources: LinkedHashSet<ReplaceRule>, file: File) {
         execute {
-            val json = GSON.toJson(rules)
-            val file =
-                FileUtils.createFileIfNotExist(Backup.exportPath + File.separator + "exportReplaceRule.json")
-            file.writeText(json)
+            val json = GSON.toJson(sources)
+            FileUtils.createFileIfNotExist(file, "exportReplaceRule.json")
+                .writeText(json)
+        }.onSuccess {
+            context.toast("成功导出至\n${Backup.exportPath}")
+        }.onError {
+            context.toast("导出失败\n${it.localizedMessage}")
+        }
+    }
+
+    fun exportSelection(sources: LinkedHashSet<ReplaceRule>, doc: DocumentFile) {
+        execute {
+            val json = GSON.toJson(sources)
+            doc.findFile("exportReplaceRule.json")?.delete()
+            doc.createFile("", "exportReplaceRule.json")
+                ?.writeText(context, json)
         }.onSuccess {
             context.toast("成功导出至\n${Backup.exportPath}")
         }.onError {
diff --git a/app/src/main/java/io/legado/app/ui/replacerule/edit/ReplaceEditDialog.kt b/app/src/main/java/io/legado/app/ui/replacerule/edit/ReplaceEditDialog.kt
index de5002931..d125674c5 100644
--- a/app/src/main/java/io/legado/app/ui/replacerule/edit/ReplaceEditDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/replacerule/edit/ReplaceEditDialog.kt
@@ -23,11 +23,17 @@ class ReplaceEditDialog : DialogFragment(),
 
     companion object {
 
-        fun show(fragmentManager: FragmentManager, id: Long = -1, pattern: String? = null) {
+        fun show(
+            fragmentManager: FragmentManager,
+            id: Long = -1,
+            pattern: String? = null,
+            isRegex: Boolean = false
+        ) {
             val dialog = ReplaceEditDialog()
             val bundle = Bundle()
             bundle.putLong("id", id)
             bundle.putString("pattern", pattern)
+            bundle.putBoolean("isRegex", isRegex)
             dialog.arguments = bundle
             dialog.show(fragmentManager, "editReplace")
         }
@@ -68,6 +74,7 @@ class ReplaceEditDialog : DialogFragment(),
         when (item?.itemId) {
             R.id.menu_save -> {
                 viewModel.save(getReplaceRule()) {
+                    callBack?.onReplaceRuleSave()
                     dismiss()
                 }
             }
@@ -94,4 +101,10 @@ class ReplaceEditDialog : DialogFragment(),
         replaceRule.scope = et_scope.text.toString()
         return replaceRule
     }
+
+    val callBack get() = activity as? CallBack
+
+    interface CallBack {
+        fun onReplaceRuleSave()
+    }
 }
diff --git a/app/src/main/java/io/legado/app/ui/replacerule/edit/ReplaceEditViewModel.kt b/app/src/main/java/io/legado/app/ui/replacerule/edit/ReplaceEditViewModel.kt
index f326c88c3..722deb738 100644
--- a/app/src/main/java/io/legado/app/ui/replacerule/edit/ReplaceEditViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/replacerule/edit/ReplaceEditViewModel.kt
@@ -21,8 +21,9 @@ class ReplaceEditViewModel(application: Application) : BaseViewModel(application
                     }
                 } else {
                     bundle.getString("pattern")?.let { pattern ->
+                        val isRegex = bundle.getBoolean("isRegex")
                         replaceRuleData.postValue(
-                            ReplaceRule(pattern = pattern)
+                            ReplaceRule(pattern = pattern, isRegex = isRegex)
                         )
                     }
                 }
diff --git a/app/src/main/java/io/legado/app/ui/rss/read/ReadRssActivity.kt b/app/src/main/java/io/legado/app/ui/rss/read/ReadRssActivity.kt
index 255505178..10504efd7 100644
--- a/app/src/main/java/io/legado/app/ui/rss/read/ReadRssActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/rss/read/ReadRssActivity.kt
@@ -65,7 +65,7 @@ class ReadRssActivity : VMBaseActivity<ReadRssViewModel>(R.layout.activity_rss_r
     }
 
     private fun initWebView() {
-        webView.webViewClient = object : WebViewClient() {
+        web_view.webViewClient = object : WebViewClient() {
             override fun shouldOverrideUrlLoading(
                 view: WebView?,
                 request: WebResourceRequest?
@@ -78,8 +78,19 @@ class ReadRssActivity : VMBaseActivity<ReadRssViewModel>(R.layout.activity_rss_r
                 }
                 return true
             }
+
+            @Suppress("DEPRECATION")
+            override fun shouldOverrideUrlLoading(view: WebView?, url: String?): Boolean {
+                if (url?.startsWith("http", true) == true) {
+                    return false
+                }
+                url?.let {
+                    openUrl(it)
+                }
+                return true
+            }
         }
-        webView.settings.apply {
+        web_view.settings.apply {
             mixedContentMode = WebSettings.MIXED_CONTENT_ALWAYS_ALLOW
             domStorageEnabled = true
             allowContentAccess = true
@@ -94,23 +105,35 @@ class ReadRssActivity : VMBaseActivity<ReadRssViewModel>(R.layout.activity_rss_r
                 val url = NetworkUtils.getAbsoluteURL(it.origin, it.link)
                 val html = viewModel.clHtml(content)
                 if (viewModel.rssSource?.loadWithBaseUrl == true) {
-                    webView.loadDataWithBaseURL(url, html, "text/html", "utf-8", url)//不想用baseUrl进else
+                    web_view.loadDataWithBaseURL(
+                        url,
+                        html,
+                        "text/html",
+                        "utf-8",
+                        url
+                    )//不想用baseUrl进else
                 } else {
                     //webView.loadData(html, "text/html;charset=utf-8", "utf-8")//经测试可以解决中文乱码
-                    webView.loadDataWithBaseURL(null, html, "text/html;charset=utf-8", "utf-8", url)
+                    web_view.loadDataWithBaseURL(
+                        null,
+                        html,
+                        "text/html;charset=utf-8",
+                        "utf-8",
+                        url
+                    )
                 }
             }
         })
         viewModel.urlLiveData.observe(this, Observer {
             upJavaScriptEnable()
-            webView.loadUrl(it.url, it.headerMap)
+            web_view.loadUrl(it.url, it.headerMap)
         })
     }
 
     @SuppressLint("SetJavaScriptEnabled")
     private fun upJavaScriptEnable() {
         if (viewModel.rssSource?.enableJs == true) {
-            webView.settings.javaScriptEnabled = true
+            web_view.settings.javaScriptEnabled = true
         }
     }
 
@@ -151,9 +174,9 @@ class ReadRssActivity : VMBaseActivity<ReadRssViewModel>(R.layout.activity_rss_r
     override fun onKeyUp(keyCode: Int, event: KeyEvent?): Boolean {
         event?.let {
             when (keyCode) {
-                KeyEvent.KEYCODE_BACK -> if (event.isTracking && !event.isCanceled && webView.canGoBack()) {
-                    if (webView.copyBackForwardList().size > 1) {
-                        webView.goBack()
+                KeyEvent.KEYCODE_BACK -> if (event.isTracking && !event.isCanceled && web_view.canGoBack()) {
+                    if (web_view.copyBackForwardList().size > 1) {
+                        web_view.goBack()
                         return true
                     }
                 }
@@ -168,8 +191,8 @@ class ReadRssActivity : VMBaseActivity<ReadRssViewModel>(R.layout.activity_rss_r
             viewModel.textToSpeech.stop()
             upTtsMenu(false)
         } else {
-            webView.settings.javaScriptEnabled = true
-            webView.evaluateJavascript("document.documentElement.outerHTML") {
+            web_view.settings.javaScriptEnabled = true
+            web_view.evaluateJavascript("document.documentElement.outerHTML") {
                 val html = StringEscapeUtils.unescapeJson(it)
                 val text = Jsoup.clean(html, Whitelist.none())
                     .replace(Regex("""&\w+;"""), "")
diff --git a/app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceActivity.kt b/app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceActivity.kt
index 22277476e..c3dd008c8 100644
--- a/app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceActivity.kt
@@ -9,6 +9,7 @@ import android.view.MenuItem
 import android.view.SubMenu
 import androidx.appcompat.widget.PopupMenu
 import androidx.appcompat.widget.SearchView
+import androidx.documentfile.provider.DocumentFile
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.Observer
 import androidx.recyclerview.widget.DiffUtil
@@ -20,12 +21,11 @@ import io.legado.app.R
 import io.legado.app.base.VMBaseActivity
 import io.legado.app.data.entities.RssSource
 import io.legado.app.help.ItemTouchCallback
-import io.legado.app.help.permission.Permissions
-import io.legado.app.help.permission.PermissionsCompat
 import io.legado.app.lib.dialogs.*
 import io.legado.app.lib.theme.ATH
 import io.legado.app.lib.theme.primaryTextColor
 import io.legado.app.ui.filechooser.FileChooserDialog
+import io.legado.app.ui.filechooser.FilePicker
 import io.legado.app.ui.qrcode.QrCodeActivity
 import io.legado.app.ui.rss.source.edit.RssSourceEditActivity
 import io.legado.app.ui.widget.SelectActionBar
@@ -38,7 +38,7 @@ import kotlinx.android.synthetic.main.view_search.*
 import org.jetbrains.anko.startActivity
 import org.jetbrains.anko.startActivityForResult
 import org.jetbrains.anko.toast
-import java.io.FileNotFoundException
+import java.io.File
 
 
 class RssSourceActivity : VMBaseActivity<RssSourceViewModel>(R.layout.activity_rss_source),
@@ -50,7 +50,8 @@ class RssSourceActivity : VMBaseActivity<RssSourceViewModel>(R.layout.activity_r
         get() = getViewModel(RssSourceViewModel::class.java)
     private val importRecordKey = "rssSourceRecordKey"
     private val qrRequestCode = 101
-    private val importSource = 124
+    private val importRequestCode = 124
+    private val exportRequestCode = 65
     private lateinit var adapter: RssSourceAdapter
     private var sourceLiveData: LiveData<List<RssSource>>? = null
     private var groups = hashSetOf<String>()
@@ -79,7 +80,8 @@ class RssSourceActivity : VMBaseActivity<RssSourceViewModel>(R.layout.activity_r
     override fun onCompatOptionsItemSelected(item: MenuItem): Boolean {
         when (item.itemId) {
             R.id.menu_add -> startActivity<RssSourceEditActivity>()
-            R.id.menu_import_source_local -> selectFileSys()
+            R.id.menu_import_source_local -> FilePicker
+                .selectFile(this, importRequestCode, "text/*", arrayOf("txt", "json"))
             R.id.menu_import_source_onLine -> showImportDialog()
             R.id.menu_import_source_qr -> startActivityForResult<QrCodeActivity>(qrRequestCode)
             R.id.menu_group_manage -> GroupManageDialog()
@@ -96,7 +98,7 @@ class RssSourceActivity : VMBaseActivity<RssSourceViewModel>(R.layout.activity_r
             R.id.menu_enable_selection -> viewModel.enableSelection(adapter.getSelection())
             R.id.menu_disable_selection -> viewModel.disableSelection(adapter.getSelection())
             R.id.menu_del_selection -> viewModel.delSelection(adapter.getSelection())
-            R.id.menu_export_selection -> viewModel.exportSelection(adapter.getSelection())
+            R.id.menu_export_selection -> FilePicker.selectFolder(this, exportRequestCode)
             R.id.menu_check_source -> {
             }
         }
@@ -248,46 +250,25 @@ class RssSourceActivity : VMBaseActivity<RssSourceViewModel>(R.layout.activity_r
         }.show().applyTint()
     }
 
-    private fun selectFileSys() {
-        try {
-            val intent = Intent(Intent.ACTION_GET_CONTENT)
-            intent.addCategory(Intent.CATEGORY_OPENABLE)
-            intent.type = "text/*"//设置类型
-            startActivityForResult(intent, importSource)
-        } catch (e: Exception) {
-            PermissionsCompat.Builder(this)
-                .addPermissions(
-                    Permissions.READ_EXTERNAL_STORAGE,
-                    Permissions.WRITE_EXTERNAL_STORAGE
-                )
-                .rationale(R.string.bg_image_per)
-                .onGranted {
-                    selectFile()
-                }
-                .request()
-        }
-    }
-
-    private fun selectFile() {
-        FileChooserDialog.show(
-            supportFragmentManager, importSource,
-            allowExtensions = arrayOf("txt", "json")
-        )
-    }
-
     override fun onFilePicked(requestCode: Int, currentPath: String) {
-        if (requestCode == importSource) {
-            Snackbar.make(title_bar, R.string.importing, Snackbar.LENGTH_INDEFINITE).show()
-            viewModel.importSourceFromFilePath(currentPath) { msg ->
-                title_bar.snackbar(msg)
+        when (requestCode) {
+            importRequestCode -> {
+                Snackbar.make(title_bar, R.string.importing, Snackbar.LENGTH_INDEFINITE).show()
+                viewModel.importSourceFromFilePath(currentPath) { msg ->
+                    title_bar.snackbar(msg)
+                }
             }
+            exportRequestCode -> viewModel.exportSelection(
+                adapter.getSelection(),
+                File(currentPath)
+            )
         }
     }
 
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
         super.onActivityResult(requestCode, resultCode, data)
         when (requestCode) {
-            importSource -> if (resultCode == Activity.RESULT_OK) {
+            importRequestCode -> if (resultCode == Activity.RESULT_OK) {
                 data?.data?.let { uri ->
                     try {
                         uri.readText(this)?.let {
@@ -297,17 +278,6 @@ class RssSourceActivity : VMBaseActivity<RssSourceViewModel>(R.layout.activity_r
                                 title_bar.snackbar(msg)
                             }
                         }
-                    } catch (e: FileNotFoundException) {
-                        PermissionsCompat.Builder(this)
-                            .addPermissions(
-                                Permissions.READ_EXTERNAL_STORAGE,
-                                Permissions.WRITE_EXTERNAL_STORAGE
-                            )
-                            .rationale(R.string.bg_image_per)
-                            .onGranted {
-                                selectFileSys()
-                            }
-                            .request()
                     } catch (e: Exception) {
                         toast(e.localizedMessage ?: "ERROR")
                     }
@@ -321,6 +291,19 @@ class RssSourceActivity : VMBaseActivity<RssSourceViewModel>(R.layout.activity_r
                     }
                 }
             }
+            exportRequestCode -> if (resultCode == RESULT_OK) {
+                data?.data?.let { uri ->
+                    if (uri.toString().isContentPath()) {
+                        DocumentFile.fromTreeUri(this, uri)?.let {
+                            viewModel.exportSelection(adapter.getSelection(), it)
+                        }
+                    } else {
+                        uri.path?.let {
+                            viewModel.exportSelection(adapter.getSelection(), File(it))
+                        }
+                    }
+                }
+            }
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceViewModel.kt b/app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceViewModel.kt
index bb9e5f219..9160155b3 100644
--- a/app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceViewModel.kt
@@ -2,6 +2,7 @@ package io.legado.app.ui.rss.source.manage
 
 import android.app.Application
 import android.text.TextUtils
+import androidx.documentfile.provider.DocumentFile
 import com.jayway.jsonpath.JsonPath
 import io.legado.app.App
 import io.legado.app.R
@@ -67,12 +68,24 @@ class RssSourceViewModel(application: Application) : BaseViewModel(application)
         }
     }
 
-    fun exportSelection(sources: LinkedHashSet<RssSource>) {
+    fun exportSelection(sources: LinkedHashSet<RssSource>, file: File) {
         execute {
             val json = GSON.toJson(sources)
-            val file =
-                FileUtils.createFileIfNotExist(Backup.exportPath + File.separator + "exportRssSource.json")
-            file.writeText(json)
+            FileUtils.createFileIfNotExist(file, "exportRssSource.json")
+                .writeText(json)
+        }.onSuccess {
+            context.toast("成功导出至\n${Backup.exportPath}")
+        }.onError {
+            context.toast("导出失败\n${it.localizedMessage}")
+        }
+    }
+
+    fun exportSelection(sources: LinkedHashSet<RssSource>, doc: DocumentFile) {
+        execute {
+            val json = GSON.toJson(sources)
+            doc.findFile("exportRssSource.json")?.delete()
+            doc.createFile("", "exportRssSource.json")
+                ?.writeText(context, json)
         }.onSuccess {
             context.toast("成功导出至\n${Backup.exportPath}")
         }.onError {
diff --git a/app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt b/app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt
index 86b326ee1..7e535f009 100644
--- a/app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt
@@ -1,49 +1,55 @@
 package io.legado.app.ui.welcome
 
-import android.animation.Animator
-import android.animation.ValueAnimator
 import android.content.Intent
 import android.os.Bundle
+import com.github.houbb.opencc4j.util.ZhConverterUtil
+import io.legado.app.App
 import io.legado.app.R
 import io.legado.app.base.BaseActivity
+import io.legado.app.help.AppConfig
+import io.legado.app.help.coroutine.Coroutine
 import io.legado.app.lib.theme.accentColor
 import io.legado.app.ui.book.read.ReadBookActivity
 import io.legado.app.ui.main.MainActivity
 import io.legado.app.utils.getPrefBoolean
 import kotlinx.android.synthetic.main.activity_welcome.*
 import org.jetbrains.anko.startActivity
+import java.util.concurrent.TimeUnit
 
 open class WelcomeActivity : BaseActivity(R.layout.activity_welcome) {
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
-        iv_bg.setColorFilter(accentColor)
+        iv_book.setColorFilter(accentColor)
+        vw_title_line.setBackgroundColor(accentColor)
         // 避免从桌面启动程序后，会重新实例化入口类的activity
         if (intent.flags and Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT != 0) {
             finish()
-            return
+        } else {
+            init()
         }
-        val welAnimator = ValueAnimator.ofFloat(1f, 0f).setDuration(800)
-        welAnimator.startDelay = 100
-        welAnimator.addUpdateListener { animation ->
-            val alpha = animation.animatedValue as Float
-            iv_bg.alpha = alpha
-        }
-        welAnimator.addListener(object : Animator.AnimatorListener {
-            override fun onAnimationStart(animation: Animator) {
-                startActivity<MainActivity>()
-                if (getPrefBoolean(getString(R.string.pk_default_read))) {
-                    startActivity<ReadBookActivity>()
-                }
-                finish()
-            }
-
-            override fun onAnimationEnd(animation: Animator) = Unit
+    }
 
-            override fun onAnimationCancel(animation: Animator) = Unit
+    private fun init() {
+        Coroutine.async {
+            //清楚过期数据
+            App.db.searchBookDao()
+                .clearExpired(System.currentTimeMillis() - TimeUnit.DAYS.toMillis(1))
+            //初始化简繁转换引擎
+            when (AppConfig.chineseConverterType) {
+                1 -> ZhConverterUtil.toSimple("初始化")
+                2 -> ZhConverterUtil.toTraditional("初始化")
+                else -> null
+            }
+        }
+        root_view.postDelayed({ startMainActivity() }, 300)
+    }
 
-            override fun onAnimationRepeat(animation: Animator) = Unit
-        })
-        welAnimator.start()
+    private fun startMainActivity() {
+        startActivity<MainActivity>()
+        if (getPrefBoolean(getString(R.string.pk_default_read))) {
+            startActivity<ReadBookActivity>()
+        }
+        finish()
     }
 
 }
diff --git a/app/src/main/java/io/legado/app/ui/widget/SelectActionBar.kt b/app/src/main/java/io/legado/app/ui/widget/SelectActionBar.kt
index 3aab86a50..dc37085b0 100644
--- a/app/src/main/java/io/legado/app/ui/widget/SelectActionBar.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/SelectActionBar.kt
@@ -9,6 +9,8 @@ import androidx.annotation.MenuRes
 import androidx.annotation.StringRes
 import androidx.appcompat.widget.PopupMenu
 import io.legado.app.R
+import io.legado.app.lib.theme.bottomBackground
+import io.legado.app.utils.dp
 import io.legado.app.utils.visible
 import kotlinx.android.synthetic.main.view_select_action_bar.view.*
 import org.jetbrains.anko.sdk27.listeners.onClick
@@ -18,7 +20,8 @@ class SelectActionBar(context: Context, attrs: AttributeSet?) : FrameLayout(cont
     private var selMenu: PopupMenu? = null
 
     init {
-        setBackgroundResource(R.color.background_menu)
+        setBackgroundColor(context.bottomBackground)
+        elevation = 10.dp.toFloat()
         View.inflate(context, R.layout.view_select_action_bar, this)
         cb_selected_all.setOnCheckedChangeListener { buttonView, isChecked ->
             if (buttonView.isPressed) {
diff --git a/app/src/main/java/io/legado/app/ui/widget/font/FontSelectDialog.kt b/app/src/main/java/io/legado/app/ui/widget/font/FontSelectDialog.kt
index 87d87e8d6..bbeb7f04e 100644
--- a/app/src/main/java/io/legado/app/ui/widget/font/FontSelectDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/font/FontSelectDialog.kt
@@ -23,13 +23,13 @@ import io.legado.app.help.permission.Permissions
 import io.legado.app.help.permission.PermissionsCompat
 import io.legado.app.lib.dialogs.alert
 import io.legado.app.ui.filechooser.FileChooserDialog
+import io.legado.app.ui.filechooser.FilePicker
 import io.legado.app.utils.*
 import kotlinx.android.synthetic.main.dialog_font_select.*
 import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.Dispatchers.Main
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
-import org.jetbrains.anko.toast
 import java.io.File
 
 class FontSelectDialog : BaseDialogFragment(),
@@ -107,41 +107,11 @@ class FontSelectDialog : BaseDialogFragment(),
 
     private fun openFolder() {
         launch(Main) {
-            alert {
-                titleResource = R.string.select_folder
-                items(resources.getStringArray(R.array.select_folder).toList()) { _, index ->
-                    when (index) {
-                        0 -> {
-                            val path = "${FileUtils.getSdCardPath()}${File.separator}Fonts"
-                            putPrefString(PreferKey.fontFolder, path)
-                            getFontFilesByPermission(path)
-                        }
-                        1 -> {
-                            try {
-                                val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE)
-                                intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
-                                startActivityForResult(intent, fontFolderRequestCode)
-                            } catch (e: java.lang.Exception) {
-                                e.printStackTrace()
-                                requireContext().toast(e.localizedMessage ?: "ERROR")
-                            }
-                        }
-                        2 -> {
-                            PermissionsCompat.Builder(this@FontSelectDialog)
-                                .addPermissions(*Permissions.Group.STORAGE)
-                                .rationale(R.string.tip_perm_request_storage)
-                                .onGranted {
-                                    FileChooserDialog.show(
-                                        childFragmentManager,
-                                        fontFolderRequestCode,
-                                        mode = FileChooserDialog.DIRECTORY
-                                    )
-                                }
-                                .request()
-                        }
-                    }
-                }
-            }.show()
+            FilePicker.selectFolder(this@FontSelectDialog, fontFolderRequestCode) {
+                val path = "${FileUtils.getSdCardPath()}${File.separator}Fonts"
+                putPrefString(PreferKey.fontFolder, path)
+                getFontFilesByPermission(path)
+            }
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/utils/UriExtensions.kt b/app/src/main/java/io/legado/app/utils/UriExtensions.kt
index 672259dc8..583f699f7 100644
--- a/app/src/main/java/io/legado/app/utils/UriExtensions.kt
+++ b/app/src/main/java/io/legado/app/utils/UriExtensions.kt
@@ -19,19 +19,17 @@ fun Uri.readBytes(context: Context): ByteArray? {
 
 @Throws(Exception::class)
 fun Uri.readText(context: Context): String? {
-    if (this.toString().isContentPath()) {
-        return DocumentUtils.readText(context, this)
-    } else {
-        val path = RealPathUtil.getPath(context, this)
-        if (path?.isNotEmpty() == true) {
-            return File(path).readText()
-        }
+    readBytes(context)?.let {
+        return String(it)
     }
     return null
 }
 
 @Throws(Exception::class)
-fun Uri.writeBytes(context: Context, byteArray: ByteArray): Boolean {
+fun Uri.writeBytes(
+    context: Context,
+    byteArray: ByteArray
+): Boolean {
     if (this.toString().isContentPath()) {
         return DocumentUtils.writeBytes(context, byteArray, this)
     } else {
@@ -46,14 +44,5 @@ fun Uri.writeBytes(context: Context, byteArray: ByteArray): Boolean {
 
 @Throws(Exception::class)
 fun Uri.writeText(context: Context, text: String): Boolean {
-    if (this.toString().isContentPath()) {
-        return DocumentUtils.writeText(context, text, this)
-    } else {
-        val path = RealPathUtil.getPath(context, this)
-        if (path?.isNotEmpty() == true) {
-            File(path).writeText(text)
-            return true
-        }
-    }
-    return false
-}
\ No newline at end of file
+    return writeBytes(context, text.toByteArray())
+}
diff --git a/app/src/main/res/drawable/image_welcome.xml b/app/src/main/res/drawable/image_welcome.xml
deleted file mode 100644
index d9d1c13a9..000000000
--- a/app/src/main/res/drawable/image_welcome.xml
+++ /dev/null
@@ -1,75 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="680.311dp"
-    android:height="1360.631dp"
-    android:viewportWidth="680.311"
-    android:viewportHeight="1360.631">
-
-    <path
-        android:strokeColor="#82A6F5"
-        android:strokeWidth="10"
-        android:strokeMiterLimit="10"
-        android:pathData="M 225.539 182.693 L 225.539 407.308" />
-    <path
-        android:fillColor="#82A6F5"
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diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index a21e6de1c..9f2d2044e 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -8,7 +8,7 @@
         android:id="@+id/bottom_navigation_view"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:elevation="6dp"
+        android:elevation="10dp"
         android:background="@color/background"
         app:labelVisibilityMode="labeled"
         app:menu="@menu/main_bnv"
diff --git a/app/src/main/res/layout/activity_rss_read.xml b/app/src/main/res/layout/activity_rss_read.xml
index e2b27076c..3c1fd1a3c 100644
--- a/app/src/main/res/layout/activity_rss_read.xml
+++ b/app/src/main/res/layout/activity_rss_read.xml
@@ -10,7 +10,7 @@
         android:layout_height="wrap_content" />
 
     <WebView
-        android:id="@+id/webView"
+        android:id="@+id/web_view"
         android:layout_width="match_parent"
         android:layout_height="match_parent" />
 
diff --git a/app/src/main/res/layout/activity_source_login.xml b/app/src/main/res/layout/activity_source_login.xml
index e2b27076c..ed20ab520 100644
--- a/app/src/main/res/layout/activity_source_login.xml
+++ b/app/src/main/res/layout/activity_source_login.xml
@@ -2,15 +2,17 @@
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:orientation="vertical">
 
     <io.legado.app.ui.widget.TitleBar
         android:id="@+id/title_bar"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content" />
+        android:layout_height="wrap_content"
+        app:title="@string/login" />
 
     <WebView
-        android:id="@+id/webView"
+        android:id="@+id/web_view"
         android:layout_width="match_parent"
         android:layout_height="match_parent" />
 
diff --git a/app/src/main/res/layout/activity_welcome.xml b/app/src/main/res/layout/activity_welcome.xml
index e8e320279..6013c90b1 100644
--- a/app/src/main/res/layout/activity_welcome.xml
+++ b/app/src/main/res/layout/activity_welcome.xml
@@ -1,15 +1,71 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/root_view"
     android:orientation="vertical"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    android:gravity="center_horizontal">
 
-    <ImageView
-        android:id="@+id/iv_bg"
+    <View
+        android:id="@+id/vw_title_line"
+        android:layout_width="6dp"
+        android:layout_height="0dp"
+        android:background="@color/colorAccent"
+        app:layout_constraintTop_toTopOf="@+id/tv_title"
+        app:layout_constraintBottom_toBottomOf="@+id/tv_title"
+        app:layout_constraintLeft_toLeftOf="@id/iv_book" />
+
+    <io.legado.app.ui.widget.text.AccentTextView
+        android:id="@+id/tv_title"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:ems="1"
+        android:text="阅读"
+        android:textSize="49sp"
+        app:layout_constraintVertical_bias="0.3"
+        app:layout_constraintRight_toLeftOf="@+id/tv_sub_title"
+        app:layout_constraintLeft_toRightOf="@+id/vw_title_line"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toTopOf="@+id/iv_book"
+        tools:ignore="HardcodedText" />
+
+    <io.legado.app.ui.widget.text.AccentTextView
+        android:id="@+id/tv_sub_title"
         android:layout_width="wrap_content"
-        android:layout_height="match_parent"
-        android:src="@drawable/image_welcome"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="60dp"
+        android:ems="1"
+        android:text="享受美好时光"
+        android:textSize="16sp"
+        app:layout_constraintTop_toTopOf="@+id/tv_title"
+        app:layout_constraintLeft_toRightOf="@id/tv_title"
+        app:layout_constraintRight_toRightOf="@id/iv_book"
+        tools:ignore="HardcodedText" />
+
+    <ImageView
+        android:id="@+id/iv_book"
+        android:layout_width="120dp"
+        android:layout_height="120dp"
+        android:layout_marginBottom="32dp"
+        android:src="@drawable/icon_read_book"
         android:scaleType="fitCenter"
-        android:contentDescription="@string/welcome" />
+        android:contentDescription="@string/welcome"
+        app:layout_constraintBottom_toTopOf="@+id/tv_gzh"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent" />
+
+    <io.legado.app.ui.widget.text.AccentTextView
+        android:id="@+id/tv_gzh"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="关注公众号[开源阅读软件]\n看文章点广告支持作者"
+        android:layout_marginBottom="32dp"
+        android:gravity="center_horizontal"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        tools:ignore="HardcodedText" />
 
-</LinearLayout>
\ No newline at end of file
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/dialog_read_aloud.xml b/app/src/main/res/layout/dialog_read_aloud.xml
index ea04696d4..627bd9414 100644
--- a/app/src/main/res/layout/dialog_read_aloud.xml
+++ b/app/src/main/res/layout/dialog_read_aloud.xml
@@ -60,6 +60,7 @@
     <View style="@style/Style.Shadow.Bottom" />
 
     <LinearLayout
+        android:id="@+id/ll_bottom_bg"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:background="@color/background_menu"
diff --git a/app/src/main/res/layout/dialog_read_book_style.xml b/app/src/main/res/layout/dialog_read_book_style.xml
index 2e6c05061..42b79b97d 100644
--- a/app/src/main/res/layout/dialog_read_book_style.xml
+++ b/app/src/main/res/layout/dialog_read_book_style.xml
@@ -2,6 +2,7 @@
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/root_view"
     android:orientation="vertical"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
diff --git a/app/src/main/res/layout/view_read_menu.xml b/app/src/main/res/layout/view_read_menu.xml
index d23bc2248..4d4f8f18b 100644
--- a/app/src/main/res/layout/view_read_menu.xml
+++ b/app/src/main/res/layout/view_read_menu.xml
@@ -156,6 +156,7 @@
                 android:layout_height="match_parent" />
 
             <LinearLayout
+                android:id="@+id/ll_bottom_bg"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:background="@color/background_menu"
diff --git a/app/src/main/res/menu/source_debug.xml b/app/src/main/res/menu/source_debug.xml
index 5b8b467f2..a55aecf0f 100644
--- a/app/src/main/res/menu/source_debug.xml
+++ b/app/src/main/res/menu/source_debug.xml
@@ -3,7 +3,7 @@
     xmlns:app="http://schemas.android.com/apk/res-auto">
 
     <item
-        android:id="@+id/action_scan"
+        android:id="@+id/menu_scan"
         android:icon="@drawable/ic_scan"
         android:title="@string/scan_qr_code"
         app:showAsAction="ifRoom" />
diff --git a/app/src/main/res/menu/source_login.xml b/app/src/main/res/menu/source_login.xml
new file mode 100644
index 000000000..c58ada14b
--- /dev/null
+++ b/app/src/main/res/menu/source_login.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <item
+        android:id="@+id/menu_success"
+        android:icon="@drawable/ic_check"
+        android:title="@string/success"
+        app:showAsAction="always" />
+
+</menu>
\ No newline at end of file
diff --git a/app/src/main/res/values/arrays.xml b/app/src/main/res/values/arrays.xml
index f46e94565..4cd90b40e 100644
--- a/app/src/main/res/values/arrays.xml
+++ b/app/src/main/res/values/arrays.xml
@@ -135,6 +135,6 @@
     <string-array name="system_typefaces">
         <item>系统默认字体</item>
         <item>系统衬线字体</item>
-        <item>系统等宽等宽</item>
+        <item>系统等宽字体</item>
     </string-array>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index 054222265..d6999a7ae 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -15,7 +15,7 @@
 
     <color name="background">@color/md_grey_50</color>
     <color name="background_card">@color/md_grey_100</color>
-    <color name="background_menu">@color/md_grey_300</color>
+    <color name="background_menu">@color/md_grey_200</color>
     <color name="transparent">#00000000</color>
 
     <color name="transparent30">#30000000</color>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 7e9540a2f..7903cadfb 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -193,7 +193,7 @@
     <string name="img_cover">封面</string>
     <string name="book">书</string>
     <string name="volume_key_page">音量键翻页</string>
-    <string name="click_open_page">点击翻页</string>
+    <string name="click_turn_page">点击翻页</string>
     <string name="click_all_next_page">点击总是翻下一页</string>
     <string name="page_anim">翻页动画</string>
     <string name="keep_light">屏幕超时</string>
@@ -488,6 +488,7 @@
     <string name="indent_3">三字符缩进</string>
     <string name="indent_4">四字符缩进</string>
     <string name="select_folder">选择文件夹</string>
+    <string name="select_file">选择文件</string>
     <string name="no_find">没有发现，可以在书源里添加。</string>
     <string name="restore_default">恢复默认</string>
     <string name="set_download_per">自定义缓存路径需要存储权限</string>
diff --git a/app/src/main/res/xml/pref_config_read.xml b/app/src/main/res/xml/pref_config_read.xml
index 37b089a09..a19a8ba4c 100644
--- a/app/src/main/res/xml/pref_config_read.xml
+++ b/app/src/main/res/xml/pref_config_read.xml
@@ -28,6 +28,12 @@
         android:key="volumeKeyPage"
         app:iconSpaceReserved="false" />
 
+    <io.legado.app.ui.widget.prefs.SwitchPreference
+        android:defaultValue="true"
+        android:title="@string/click_turn_page"
+        android:key="clickTurnPage"
+        app:iconSpaceReserved="false" />
+
     <io.legado.app.ui.widget.prefs.SwitchPreference
         android:defaultValue="false"
         android:title="@string/click_all_next_page"
diff --git a/app/src/main/res/xml/pref_config_theme.xml b/app/src/main/res/xml/pref_config_theme.xml
index 3380e4669..fe0d24ca2 100644
--- a/app/src/main/res/xml/pref_config_theme.xml
+++ b/app/src/main/res/xml/pref_config_theme.xml
@@ -60,6 +60,14 @@
             app:cpv_dialogType="preset"
             app:iconSpaceReserved="false" />
 
+        <io.legado.app.ui.widget.prefs.ColorPreference
+            android:defaultValue="@color/md_grey_200"
+            android:key="colorBottomBackground"
+            android:summary="白天，底栏色"
+            android:title="底部操作栏颜色"
+            app:cpv_dialogType="preset"
+            app:iconSpaceReserved="false" />
+
     </io.legado.app.ui.widget.prefs.PreferenceCategory>
 
     <io.legado.app.ui.widget.prefs.PreferenceCategory
@@ -90,6 +98,14 @@
             app:cpv_dialogType="preset"
             app:iconSpaceReserved="false" />
 
+        <io.legado.app.ui.widget.prefs.ColorPreference
+            android:defaultValue="@color/md_grey_800"
+            android:key="colorBottomBackgroundNight"
+            android:summary="夜间，底栏色"
+            android:title="底部操作栏颜色"
+            app:cpv_dialogType="preset"
+            app:iconSpaceReserved="false" />
+
     </io.legado.app.ui.widget.prefs.PreferenceCategory>
 
 </androidx.preference.PreferenceScreen>
\ No newline at end of file