diff --git a/app/src/main/assets/updateLog.md b/app/src/main/assets/updateLog.md
index 721545ff0..169510a32 100644
--- a/app/src/main/assets/updateLog.md
+++ b/app/src/main/assets/updateLog.md
@@ -4,6 +4,13 @@
 * 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】，提示存储权限，选择允许即可导入成功。
 * 注意：由于安卓10更改了权限策略，还需要给「允许安装其他应用」的权限才能导入源。MIUI11也需要此权限。
 
+**2019/12/20**
+* 阅读界面的下载菜单可以用了
+* rss阅读bug修复,webView内可以用返回建返回上一链接
+* 优化搜索界面逻辑
+* 导入旧书源时url里的&不再转为&&
+* 修复书架封面显示不全的bug
+
 **2019/12/16**
 * 添加几个主题选择
 * 音频播放添加header支持
diff --git a/app/src/main/java/io/legado/app/help/storage/OldRule.kt b/app/src/main/java/io/legado/app/help/storage/OldRule.kt
index 1c180838c..0c9baa659 100644
--- a/app/src/main/java/io/legado/app/help/storage/OldRule.kt
+++ b/app/src/main/java/io/legado/app/help/storage/OldRule.kt
@@ -5,11 +5,7 @@ import io.legado.app.constant.BookType
 import io.legado.app.data.entities.BookSource
 import io.legado.app.data.entities.rule.*
 import io.legado.app.help.storage.Restore.jsonPath
-import io.legado.app.utils.GSON
-import io.legado.app.utils.fromJsonObject
-import io.legado.app.utils.readInt
-import io.legado.app.utils.readString
-import io.legado.app.utils.readBool
+import io.legado.app.utils.*
 import java.util.regex.Pattern
 
 object OldRule {
@@ -129,7 +125,11 @@ object OldRule {
                     newRule = newRule.replace("|", "||")
                 }
             }
-            if (newRule.contains("&") && !newRule.contains("&&")) {
+            if (newRule.contains("&")
+                && !newRule.contains("&&")
+                && !newRule.contains("http")
+                && !newRule.startsWith("/")
+            ) {
                 newRule = newRule.replace("&", "&&")
             }
         }
@@ -145,10 +145,9 @@ object OldRule {
             return toNewUrl(oldUrls)
 
         val urls = oldUrls.split("(&&|\n)+".toRegex())
-        val newUrls = urls.map {
-            toNewUrl(it)?.replace("\n\\s*".toRegex(),"")
+        return urls.map {
+            toNewUrl(it)?.replace("\n\\s*".toRegex(), "")
         }.joinToString("\n")
-        return newUrls
     }
 
     private fun toNewUrl(oldUrl: String?): String? {
diff --git a/app/src/main/java/io/legado/app/ui/book/info/BookInfoActivity.kt b/app/src/main/java/io/legado/app/ui/book/info/BookInfoActivity.kt
index 485b3d02b..c55c1812c 100644
--- a/app/src/main/java/io/legado/app/ui/book/info/BookInfoActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/info/BookInfoActivity.kt
@@ -111,7 +111,6 @@ class BookInfoActivity :
         tv_intro.text = book.getDisplayIntro()
         book.getDisplayCover()?.let {
             ImageLoader.load(this, it)
-                .error(R.drawable.image_cover_default)
                 .centerCrop()
                 .into(iv_cover)
             ImageLoader.load(this, it)
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 1b5966efb..a059e380d 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
@@ -13,7 +13,6 @@ import io.legado.app.BuildConfig
 import io.legado.app.R
 import io.legado.app.base.VMBaseActivity
 import io.legado.app.constant.Bus
-import io.legado.app.help.ActivityHelp
 import io.legado.app.help.storage.Backup
 import io.legado.app.lib.theme.ATH
 import io.legado.app.service.BaseReadAloudService
@@ -113,14 +112,10 @@ class MainActivity : VMBaseActivity<MainViewModel>(R.layout.activity_main),
     }
 
     override fun finish() {
-        if (ActivityHelp.size() > 1) {
-            moveTaskToBack(true)
-        } else {
-            if (!BuildConfig.DEBUG) {
-                Backup.autoBackup()
-            }
-            super.finish()
+        if (!BuildConfig.DEBUG) {
+            Backup.autoBackup()
         }
+        super.finish()
     }
 
     override fun onDestroy() {
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 f20be3f87..9fc29878b 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
@@ -2,6 +2,7 @@ package io.legado.app.ui.rss.read
 
 import android.annotation.SuppressLint
 import android.os.Bundle
+import android.view.KeyEvent
 import android.view.Menu
 import android.view.MenuItem
 import android.webkit.WebSettings
@@ -90,4 +91,28 @@ class ReadRssActivity : VMBaseActivity<ReadRssViewModel>(R.layout.activity_rss_r
         }
         DrawableUtils.setTint(starMenuItem?.icon, primaryTextColor)
     }
+
+    override fun onKeyLongPress(keyCode: Int, event: KeyEvent?): Boolean {
+        when (keyCode) {
+            KeyEvent.KEYCODE_BACK -> {
+                finish()
+                return true
+            }
+        }
+        return super.onKeyLongPress(keyCode, event)
+    }
+
+    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()
+                        return true
+                    }
+                }
+            }
+        }
+        return super.onKeyUp(keyCode, event)
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/res/layout/item_bookshelf_grid.xml b/app/src/main/res/layout/item_bookshelf_grid.xml
index 0160a1896..4ed7e8158 100644
--- a/app/src/main/res/layout/item_bookshelf_grid.xml
+++ b/app/src/main/res/layout/item_bookshelf_grid.xml
@@ -12,7 +12,7 @@
     <io.legado.app.ui.widget.image.CoverImageView
         android:id="@+id/iv_cover"
         android:layout_width="match_parent"
-        android:layout_height="100dp"
+        android:layout_height="wrap_content"
         android:contentDescription="@string/img_cover"
         android:scaleType="centerCrop"
         android:src="@drawable/image_cover_default"