diff --git a/app/src/main/java/io/legado/app/constant/AppPattern.kt b/app/src/main/java/io/legado/app/constant/AppPattern.kt
index 2faf70daf..19fa46a41 100644
--- a/app/src/main/java/io/legado/app/constant/AppPattern.kt
+++ b/app/src/main/java/io/legado/app/constant/AppPattern.kt
@@ -12,5 +12,5 @@ object AppPattern {
     val nameRegex = Regex("\\s+作\\s*者.*")
     val authorRegex = Regex(".*?作\\s*?者[:：]")
     val fileNameRegex = Regex("[\\\\/:*?\"<>|.]")
-    val splitGroupRegex = Regex("[,;]")
+    val splitGroupRegex = Regex("[,;，；]")
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/data/dao/BookSourceDao.kt b/app/src/main/java/io/legado/app/data/dao/BookSourceDao.kt
index 0c0b8e49a..e7ffc7fe0 100644
--- a/app/src/main/java/io/legado/app/data/dao/BookSourceDao.kt
+++ b/app/src/main/java/io/legado/app/data/dao/BookSourceDao.kt
@@ -11,7 +11,7 @@ interface BookSourceDao {
     @Query("select * from book_sources order by customOrder asc")
     fun liveDataAll(): LiveData<List<BookSource>>
 
-    @Query("select * from book_sources where bookSourceName like :searchKey or bookSourceGroup like :searchKey or bookSourceUrl like :searchKey order by customOrder asc")
+    @Query("select * from book_sources where bookSourceName like :searchKey or bookSourceGroup like :searchKey or bookSourceUrl like :searchKey  or bookSourceComment like :searchKey order by customOrder asc")
     fun liveDataSearch(searchKey: String = ""): LiveData<List<BookSource>>
 
     @Query("select * from book_sources where enabled = 1 order by customOrder asc")
diff --git a/app/src/main/java/io/legado/app/data/entities/BookSource.kt b/app/src/main/java/io/legado/app/data/entities/BookSource.kt
index 3af66f972..29ffdcfd1 100644
--- a/app/src/main/java/io/legado/app/data/entities/BookSource.kt
+++ b/app/src/main/java/io/legado/app/data/entities/BookSource.kt
@@ -135,7 +135,7 @@ data class BookSource(
         bindings["java"] = this
         return AppConst.SCRIPT_ENGINE.eval(jsStr, bindings)
     }
-    
+
     fun equal(source: BookSource) =
         equal(bookSourceName, source.bookSourceName)
             && equal(bookSourceUrl, source.bookSourceUrl)
@@ -156,7 +156,7 @@ data class BookSource(
             && getContentRule() == source.getContentRule()
     
     private fun equal(a: String?, b: String?) = a == b || (a.isNullOrEmpty() && b.isNullOrEmpty())
-    
+
     data class ExploreKind(
         var title: String,
         var url: String? = null
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 27ed39d84..bf1eed674 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
@@ -63,6 +63,9 @@ class BookSourceEditActivity :
     override fun onCompatOptionsItemSelected(item: MenuItem): Boolean {
         when (item.itemId) {
             R.id.menu_save -> getSource().let { source ->
+                if (!source.equal(viewModel.bookSource ?: BookSource())){
+                    source.lastUpdateTime = System.currentTimeMillis()
+                }
                 if (checkSource(source)) {
                     viewModel.save(source) { setResult(Activity.RESULT_OK); finish() }
                 }
@@ -170,10 +173,11 @@ class BookSourceEditActivity :
             add(EditEntity("bookSourceUrl", source?.bookSourceUrl, R.string.source_url))
             add(EditEntity("bookSourceName", source?.bookSourceName, R.string.source_name))
             add(EditEntity("bookSourceGroup", source?.bookSourceGroup, R.string.source_group))
+            add(EditEntity("bookSourceComment", source?.bookSourceComment, R.string.comment))
             add(EditEntity("loginUrl", source?.loginUrl, R.string.login_url))
             add(EditEntity("bookUrlPattern", source?.bookUrlPattern, R.string.book_url_pattern))
             add(EditEntity("header", source?.header, R.string.source_http_header))
-            add(EditEntity("bookSourceComment", source?.bookSourceComment, R.string.comment))
+
         }
         //搜索
         val sr = source?.getSearchRule()
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 a7d58dba5..59422c186 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
@@ -2,6 +2,7 @@ package io.legado.app.ui.book.source.manage
 
 import android.annotation.SuppressLint
 import android.app.Activity
+import android.content.ActivityNotFoundException
 import android.content.Intent
 import android.os.Bundle
 import android.view.Menu
@@ -9,18 +10,23 @@ import android.view.MenuItem
 import android.view.SubMenu
 import androidx.appcompat.widget.PopupMenu
 import androidx.appcompat.widget.SearchView
+import androidx.core.content.FileProvider
 import androidx.documentfile.provider.DocumentFile
 import androidx.lifecycle.LiveData
 import androidx.recyclerview.widget.DiffUtil
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.LinearLayoutManager
 import io.legado.app.App
+import io.legado.app.BuildConfig
 import io.legado.app.R
 import io.legado.app.base.VMBaseActivity
 import io.legado.app.constant.AppPattern
 import io.legado.app.data.entities.BookSource
 import io.legado.app.help.IntentDataHelp
 import io.legado.app.lib.dialogs.*
+import io.legado.app.lib.dialogs.alert
+import io.legado.app.lib.dialogs.noButton
+import io.legado.app.lib.dialogs.okButton
 import io.legado.app.lib.theme.ATH
 import io.legado.app.lib.theme.primaryTextColor
 import io.legado.app.service.help.CheckSource
@@ -41,6 +47,7 @@ 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.File
 import java.text.Collator
 
@@ -60,6 +67,7 @@ class BookSourceActivity : VMBaseActivity<BookSourceViewModel>(R.layout.activity
     private var groups = linkedSetOf<String>()
     private var groupMenu: SubMenu? = null
     private var sort = 0
+    private var sortAscending = 0
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         initRecyclerView()
@@ -86,6 +94,21 @@ class BookSourceActivity : VMBaseActivity<BookSourceViewModel>(R.layout.activity
         when (item.itemId) {
             R.id.menu_add_book_source -> startActivity<BookSourceEditActivity>()
             R.id.menu_import_source_qr -> startActivityForResult<QrCodeActivity>(qrRequestCode)
+            R.id.menu_share_source -> {
+                try {
+                    val json = GSON.toJson(adapter.getSelection())
+                    val intent = Intent(Intent.ACTION_SEND)
+                    val file = FileUtils.createFileWithReplace("$filesDir/shareBookSource.json")
+                    file.writeText(json)
+                    val fileUri = FileProvider.getUriForFile(this, BuildConfig.APPLICATION_ID + ".fileProvider", file)
+                    intent.type = "text/*"
+                    intent.putExtra(Intent.EXTRA_STREAM, fileUri)
+                    intent.flags = Intent.FLAG_GRANT_READ_URI_PERMISSION
+                    startActivity(Intent.createChooser(intent, getString(R.string.share_selected_source)))
+                } catch (e: ActivityNotFoundException) {
+                    e.printStackTrace()
+                }
+            }
             R.id.menu_group_manage ->
                 GroupManageDialog().show(supportFragmentManager, "groupManage")
             R.id.menu_import_source_local -> FilePicker
@@ -93,22 +116,27 @@ class BookSourceActivity : VMBaseActivity<BookSourceViewModel>(R.layout.activity
             R.id.menu_import_source_onLine -> showImportDialog()
             R.id.menu_sort_manual -> {
                 item.isChecked = true
-                sort = 0
+                sortCheck(0)
                 initLiveDataBookSource(search_view.query?.toString())
             }
             R.id.menu_sort_auto -> {
                 item.isChecked = true
-                sort = 2
+                sortCheck(1)
                 initLiveDataBookSource(search_view.query?.toString())
             }
             R.id.menu_sort_pin_yin -> {
                 item.isChecked = true
-                sort = 3
+                sortCheck(2)
                 initLiveDataBookSource(search_view.query?.toString())
             }
             R.id.menu_sort_url -> {
                 item.isChecked = true
-                sort = 4
+                sortCheck(3)
+                initLiveDataBookSource(search_view.query?.toString())
+            }
+            R.id.menu_sort_time -> {
+                item.isChecked = true
+                sortCheck(4)
                 initLiveDataBookSource(search_view.query?.toString())
             }
             R.id.menu_enabled_group -> {
@@ -168,18 +196,38 @@ class BookSourceActivity : VMBaseActivity<BookSourceViewModel>(R.layout.activity
             }
         }
         bookSourceLiveDate?.observe(this, { data ->
-            val sourceList = when (sort) {
-                1 -> data.sortedBy { it.weight }
-                2 -> data.sortedBy { it.bookSourceName }
-                3 -> data.sortedBy { it.bookSourceUrl }
-                else -> data
+            val sourceList = when (sortAscending % 2){
+                0 -> when (sort) {
+                    1 -> data.sortedBy { it.weight }
+                    2 -> data.sortedBy { it.bookSourceName }
+                    3 -> data.sortedBy { it.bookSourceUrl }
+                    4 -> data.sortedByDescending { it.lastUpdateTime}
+                    else -> data
+                }
+                else -> when (sort) {
+                    1 -> data.sortedByDescending { it.weight }
+                    2 -> data.sortedByDescending { it.bookSourceName }
+                    3 -> data.sortedByDescending { it.bookSourceUrl }
+                    4 -> data.sortedBy { it.lastUpdateTime}
+                    else -> data.reversed()
+                }
             }
+            recycler_view.scrollToPosition(0)
             val diffResult = DiffUtil
                 .calculateDiff(DiffCallBack(ArrayList(adapter.getItems()), sourceList))
             adapter.setItems(sourceList, diffResult)
             upCountView()
         })
     }
+    private fun sortCheck (sortId: Int){
+        if (sort == sortId){
+            sortAscending +=1
+        }
+        else{
+            sortAscending = 0
+            sort = sortId
+        }
+    }
 
     private fun initLiveDataGroup() {
         App.db.bookSourceDao().liveGroup().observe(this, {
@@ -226,12 +274,12 @@ 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 -> FilePicker.selectFolder(this, exportRequestCode)
             R.id.menu_check_source -> checkSource()
             R.id.menu_top_sel -> viewModel.topSource(*adapter.getSelection().toTypedArray())
             R.id.menu_bottom_sel -> viewModel.bottomSource(*adapter.getSelection().toTypedArray())
             R.id.menu_add_group -> selectionAddToGroups()
             R.id.menu_remove_group -> selectionRemoveFromGroups()
+            R.id.menu_export_selection -> FilePicker.selectFolder(this, exportRequestCode)
         }
         return true
     }
diff --git a/app/src/main/java/io/legado/app/utils/FileUtils.kt b/app/src/main/java/io/legado/app/utils/FileUtils.kt
index eef940a86..ef67fab8b 100644
--- a/app/src/main/java/io/legado/app/utils/FileUtils.kt
+++ b/app/src/main/java/io/legado/app/utils/FileUtils.kt
@@ -55,6 +55,23 @@ object FileUtils {
         return file
     }
 
+    fun createFileWithReplace(filePath: String) : File{
+        val file = File(filePath)
+        if (!file.exists()) {
+            //创建父类文件夹
+            file.parent?.let {
+                createFolderIfNotExist(it)
+            }
+            //创建文件
+            file.createNewFile()
+        }
+        else{
+            file.delete()
+            file.createNewFile()
+        }
+        return file
+    }
+
     fun getFile(root: File, vararg subDirFiles: String): File {
         val filePath = getPath(root, *subDirFiles)
         return File(filePath)
diff --git a/app/src/main/res/drawable/ic_share.xml b/app/src/main/res/drawable/ic_share.xml
index 0022d3b38..7b4b0103b 100644
--- a/app/src/main/res/drawable/ic_share.xml
+++ b/app/src/main/res/drawable/ic_share.xml
@@ -1,14 +1,9 @@
-<?xml version="1.0" encoding="utf-8"?>
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
     android:width="24dp"
     android:height="24dp"
     android:viewportWidth="24"
     android:viewportHeight="24">
-
-    <path
-        android:fillColor="#FFFFFF"
-        android:pathData="M9.866,9.9c-1.158,0-2.1,0.941-2.1,2.1s0.941,2.1,2.1,2.1s2.1-0.941,2.1-2.1S11.024,9.9,9.866,9.9z M9.866,13.1c-0.606,0-1.1-0.493-1.1-1.1s0.493-1.1,1.1-1.1s1.1,0.493,1.1,1.1S10.473,13.1,9.866,13.1z" />
-    <path
-        android:fillColor="#FFFFFF"
-        android:pathData="M16.267,16c-0.37,0-0.716,0.091-1.029,0.241l-1.656-1.657c0.513-0.734,0.817-1.623,0.817-2.584 s-0.305-1.85-0.817-2.584l1.656-1.657C15.551,7.909,15.896,8,16.267,8c1.323,0,2.399-1.077,2.399-2.4S17.59,3.2,16.267,3.2 s-2.4,1.076-2.4,2.399c0,0.369,0.091,0.715,0.241,1.028L12.45,8.285c-0.733-0.513-1.622-0.818-2.584-0.818 c-2.5,0-4.533,2.033-4.533,4.533s2.033,4.533,4.533,4.533c0.962,0,1.851-0.306,2.584-0.818l1.657,1.657 c-0.15,0.313-0.241,0.659-0.241,1.028c0,1.323,1.077,2.399,2.4,2.399s2.399-1.076,2.399-2.399S17.59,16,16.267,16z M16.267,4.8 c0.44,0,0.8,0.359,0.8,0.8c0,0.441-0.359,0.801-0.8,0.801c-0.441,0-0.801-0.359-0.801-0.801C15.466,5.159,15.825,4.8,16.267,4.8z M9.866,14.934c-1.617,0-2.934-1.316-2.934-2.934s1.316-2.934,2.934-2.934s2.933,1.316,2.933,2.934S11.483,14.934,9.866,14.934z M16.267,19.2c-0.441,0-0.801-0.359-0.801-0.8c0-0.441,0.359-0.801,0.801-0.801c0.44,0,0.8,0.359,0.8,0.801 C17.066,18.841,16.707,19.2,16.267,19.2z" />
-</vector>
\ No newline at end of file
+  <path
+      android:pathData="M18,16.08c-0.76,0 -1.44,0.3 -1.96,0.77L8.91,12.7c0.05,-0.23 0.09,-0.46 0.09,-0.7s-0.04,-0.47 -0.09,-0.7l7.05,-4.11c0.54,0.5 1.25,0.81 2.04,0.81 1.66,0 3,-1.34 3,-3s-1.34,-3 -3,-3 -3,1.34 -3,3c0,0.24 0.04,0.47 0.09,0.7L8.04,9.81C7.5,9.31 6.79,9 6,9c-1.66,0 -3,1.34 -3,3s1.34,3 3,3c0.79,0 1.5,-0.31 2.04,-0.81l7.12,4.16c-0.05,0.21 -0.08,0.43 -0.08,0.65 0,1.61 1.31,2.92 2.92,2.92 1.61,0 2.92,-1.31 2.92,-2.92s-1.31,-2.92 -2.92,-2.92z"
+      android:fillColor="#000000"/>
+</vector>
diff --git a/app/src/main/res/menu/book_source.xml b/app/src/main/res/menu/book_source.xml
index 4ae595bb7..ed20f9b16 100644
--- a/app/src/main/res/menu/book_source.xml
+++ b/app/src/main/res/menu/book_source.xml
@@ -46,6 +46,10 @@
                             android:checkable="true"
                             android:title="@string/sort_by_url" />
 
+                        <item
+                            android:id="@+id/menu_sort_time"
+                            android:checkable="true"
+                            android:title="@string/sort_by_lastUppdateTime" />
                     </group>
 
                 </menu>
@@ -92,4 +96,11 @@
         android:title="@string/import_by_qr_code"
         app:showAsAction="never" />
 
+    <item
+        android:id="@+id/menu_share_source"
+        android:icon="@drawable/ic_share"
+        android:title="@string/share_selected_source"
+        app:showAsAction="never" />
+
+
 </menu>
diff --git a/app/src/main/res/values-zh-rHK/strings.xml b/app/src/main/res/values-zh-rHK/strings.xml
index 0e6ae2b2d..9494414c8 100644
--- a/app/src/main/res/values-zh-rHK/strings.xml
+++ b/app/src/main/res/values-zh-rHK/strings.xml
@@ -759,5 +759,7 @@
     <string name="theme_list">主题列表</string>
     <string name="theme_list_summary">使用保存主题,导入,分享主题</string>
     <string name="select_theme">切換默認主題</string>
+    <string name="share_selected_source">分享選中書源</string>
+    <string name="sort_by_lastUppdateTime">時間排序</string>
 
 </resources>
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index 7be3d0924..09d1225b4 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -759,6 +759,8 @@
     <string name="theme_list">主题列表</string>
     <string name="theme_list_summary">使用保存主题,导入,分享主题</string>
     <string name="select_theme">切換默認主題</string>
+    <string name="share_selected_source">分享選中書源</string>
+    <string name="sort_by_lastUppdateTime">時間排序</string>
 
 
 </resources>
diff --git a/app/src/main/res/values-zh/strings.xml b/app/src/main/res/values-zh/strings.xml
index fe359bf67..a32fa95bb 100644
--- a/app/src/main/res/values-zh/strings.xml
+++ b/app/src/main/res/values-zh/strings.xml
@@ -444,6 +444,7 @@
     <string name="source_http_header">请求头(header)</string>
     <string name="debug_source">调试源</string>
     <string name="import_by_qr_code">二维码导入</string>
+    <string name="share_selected_source">分享选中书源</string>
     <string name="scan_qr_code">扫描二维码</string>
     <string name="click_on_selected_show_menu">选中时点击可弹出菜单</string>
     <string name="theme">主题</string>
@@ -759,5 +760,6 @@
     <string name="theme_list">主题列表</string>
     <string name="theme_list_summary">使用保存主题,导入,分享主题</string>
     <string name="select_theme">切换默认主题</string>
+    <string name="sort_by_lastUppdateTime">时间排序</string>
 
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index ccc85629a..6cdf21bb0 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -388,6 +388,7 @@
     <string name="sort_url">分类Url</string>
     <string name="login_url">登录URL(loginUrl)</string>
     <string name="comment">源注释(sourceComment)</string>
+    <string name="source_http_header">请求头(header)</string>
     <string name="r_search_url">搜索地址(url)</string>
     <string name="r_find_url">发现地址规则(url)</string>
     <string name="r_book_list">书籍列表规则(bookList)</string>
@@ -444,7 +445,7 @@
     <string name="net_error_10003">Data parsing failed</string>
     <!--error string end-->
 
-    <string name="source_http_header">Source http header</string>
+
     <string name="debug_source">Debug source</string>
     <string name="import_by_qr_code">Import from QR code</string>
     <string name="scan_qr_code">Scan QR code</string>
@@ -761,5 +762,7 @@
     <string name="save_night_theme_summary">Save night theme config</string>
     <string name="theme_list">Theme list</string>
     <string name="theme_list_summary">Save, Import, Share theme</string>
+    <string name="share_selected_source">Share selected sources</string>
+    <string name="sort_by_lastUppdateTime">Sort by update time</string>
 
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/xml/file_paths.xml b/app/src/main/res/xml/file_paths.xml
index cdcf27e1b..779108dbf 100644
--- a/app/src/main/res/xml/file_paths.xml
+++ b/app/src/main/res/xml/file_paths.xml
@@ -6,4 +6,19 @@
     <external-path
         name="external_storage_root"
         path="." />
+    <files-path
+        name="share"
+        path="." />
+    <external-files-path
+        name="external_files"
+        path="." />
+    <cache-path
+        name="cache"
+        path="." />
+    <external-cache-path
+        name="external_cache"
+        path="." />
+    <files-path
+        name="files"
+        path="." />
 </paths>
\ No newline at end of file