diff --git a/app/build.gradle b/app/build.gradle
index c299deee3..6741567bb 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -87,7 +87,7 @@ dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
 
     //fireBase
-    implementation 'com.google.firebase:firebase-core:17.2.0'
+    implementation 'com.google.firebase:firebase-core:17.2.1'
     implementation 'com.crashlytics.sdk.android:crashlytics:2.10.1'
 
     //androidX
@@ -97,8 +97,8 @@ dependencies {
     implementation 'androidx.preference:preference:1.1.0'
     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
     implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.0.0'
-    implementation 'androidx.viewpager2:viewpager2:1.0.0-beta05'
-    implementation 'com.google.android.material:material:1.1.0-beta01'
+    implementation 'androidx.viewpager2:viewpager2:1.0.0-rc01'
+    implementation 'com.google.android.material:material:1.2.0-alpha01'
     implementation 'com.google.android:flexbox:1.1.0'
 
     //lifecycle
@@ -107,7 +107,7 @@ dependencies {
     implementation "androidx.lifecycle:lifecycle-common-java8:$lifecycle_version"
 
     //room
-    def room_version = '2.2.0'
+    def room_version = '2.2.1'
     implementation "androidx.room:room-runtime:$room_version"
     kapt "androidx.room:room-compiler:$room_version"
 
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 d2b48fa49..85965050c 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
@@ -29,14 +29,14 @@ interface BookSourceDao {
     @Query("select distinct  enabled from book_sources where bookSourceName like :searchKey or bookSourceGroup like :searchKey or bookSourceUrl like :searchKey")
     fun searchIsEnable(searchKey: String = ""): List<Boolean>
 
-    @Query("update book_sources set enabled = 1 where bookSourceUrl in (:sourceUrls)")
-    fun enableSection(vararg sourceUrls: String)
+    @Query("update book_sources set enabled = 1 where bookSourceUrl = :sourceUrl")
+    fun enableSection(sourceUrl: String)
 
-    @Query("update book_sources set enabled = 0 where bookSourceUrl in (:sourceUrls)")
-    fun disableSection(vararg sourceUrls: String)
+    @Query("update book_sources set enabled = 0 where bookSourceUrl = :sourceUrl")
+    fun disableSection(sourceUrl: String)
 
-    @Query("delete from book_sources where bookSourceUrl in (:sourceUrls)")
-    fun delSection(vararg sourceUrls: String)
+    @Query("delete from book_sources where bookSourceUrl = :sourceUrl")
+    fun delSection(sourceUrl: String)
 
     @Query("select * from book_sources where enabledExplore = 1 order by customOrder asc")
     fun observeFind(): DataSource.Factory<Int, BookSource>
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 21e3fd67b..f47bcd8da 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
@@ -58,7 +58,8 @@ object BookChapterList {
                             tocRule,
                             listRule,
                             book,
-                            bookSource
+                            bookSource,
+                            printLog = false
                         )
                         nextUrl = if (chapterData.nextUrl.isNotEmpty())
                             chapterData.nextUrl[0]
@@ -88,8 +89,7 @@ object BookChapterList {
                         tocRule,
                         listRule,
                         book,
-                        bookSource,
-                        getNextUrl = false
+                        bookSource
                     )
                     item.chapterList = nextChapterData.chapterList
                 }
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 014454edc..49ce90783 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
@@ -123,7 +123,7 @@ object BookContent {
             analyzeRule.getStringList(nextUrlRule, true)?.let {
                 nextUrlList.addAll(it)
             }
-            SourceDebug.printLog(bookSource.bookSourceUrl, "└" + nextUrlList.joinToString(","))
+            SourceDebug.printLog(bookSource.bookSourceUrl, "└" + nextUrlList.joinToString(","), printLog)
         }
         val content = analyzeRule.getString(contentRule.content ?: "")?.htmlFormat() ?: ""
         return ContentData(content, nextUrlList)
diff --git a/app/src/main/java/io/legado/app/ui/book/search/SearchActivity.kt b/app/src/main/java/io/legado/app/ui/book/search/SearchActivity.kt
index 2e2342348..43dbeca82 100644
--- a/app/src/main/java/io/legado/app/ui/book/search/SearchActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/search/SearchActivity.kt
@@ -99,14 +99,7 @@ class SearchActivity : VMBaseActivity<SearchViewModel>(R.layout.activity_book_se
                 search_view.clearFocus()
                 query?.let {
                     viewModel.saveSearchKey(query)
-                    viewModel.search(it, {
-                        refresh_progress_bar.isAutoLoading = true
-                        initData()
-                        fb_stop.visible()
-                    }, {
-                        refresh_progress_bar.isAutoLoading = false
-                        fb_stop.invisible()
-                    })
+                    viewModel.search(it)
                 }
                 return true
             }
@@ -178,7 +171,7 @@ class SearchActivity : VMBaseActivity<SearchViewModel>(R.layout.activity_book_se
     }
 
     private fun scrollToBottom() {
-        if (!viewModel.isLoading) {
+        if (!viewModel.isLoading && viewModel.searchKey.isNotEmpty()) {
             viewModel.search("")
         }
     }
@@ -227,6 +220,17 @@ class SearchActivity : VMBaseActivity<SearchViewModel>(R.layout.activity_book_se
         historyData?.observe(this, Observer { historyKeyAdapter.setItems(it) })
     }
 
+    override fun startSearch() {
+        refresh_progress_bar.isAutoLoading = true
+        initData()
+        fb_stop.visible()
+    }
+
+    override fun searchFinally() {
+        refresh_progress_bar.isAutoLoading = false
+        fb_stop.invisible()
+    }
+
     override fun showBookInfo(name: String, author: String) {
         viewModel.getSearchBook(name, author) { searchBook ->
             searchBook?.let {
diff --git a/app/src/main/java/io/legado/app/ui/book/search/SearchViewModel.kt b/app/src/main/java/io/legado/app/ui/book/search/SearchViewModel.kt
index 3d8d715d9..9700fafb0 100644
--- a/app/src/main/java/io/legado/app/ui/book/search/SearchViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/search/SearchViewModel.kt
@@ -25,23 +25,22 @@ class SearchViewModel(application: Application) : BaseViewModel(application) {
     var isLoading = false
     private var searchBooks = arrayListOf<SearchBook>()
 
-    fun search(
-        key: String,
-        start: (() -> Unit)? = null,
-        finally: (() -> Unit)? = null
-    ) {
+    fun search(key: String) {
         task?.cancel()
-        if (key.isEmpty()) {
+        if (key.isEmpty() && searchKey.isEmpty()) {
+            return
+        } else if (key.isEmpty()) {
+            isLoading = true
             searchPage++
-        } else {
+        } else if (key.isNotEmpty()) {
+            isLoading = true
+            searchPage = 0
             searchKey = key
             searchBooks.clear()
         }
-        if (searchKey.isEmpty()) return
         startTime = System.currentTimeMillis()
-        start?.invoke()
+        callBack?.startSearch()
         task = execute {
-            isLoading = true
             val searchGroup = context.getPrefString("searchGroup") ?: ""
             val bookSourceList = if (searchGroup.isBlank()) {
                 App.db.bookSourceDao().allEnabled
@@ -66,7 +65,7 @@ class SearchViewModel(application: Application) : BaseViewModel(application) {
         }
 
         task?.invokeOnCompletion {
-            finally?.invoke()
+            callBack?.searchFinally()
             isLoading = false
         }
     }
@@ -176,5 +175,7 @@ class SearchViewModel(application: Application) : BaseViewModel(application) {
 
     interface CallBack {
         var adapter: SearchAdapter
+        fun startSearch()
+        fun searchFinally()
     }
 }
diff --git a/app/src/main/java/io/legado/app/ui/book/source/debug/BookSourceDebugAdapter.kt b/app/src/main/java/io/legado/app/ui/book/source/debug/BookSourceDebugAdapter.kt
index 2ec4e9518..7fd07fbda 100644
--- a/app/src/main/java/io/legado/app/ui/book/source/debug/BookSourceDebugAdapter.kt
+++ b/app/src/main/java/io/legado/app/ui/book/source/debug/BookSourceDebugAdapter.kt
@@ -1,6 +1,7 @@
 package io.legado.app.ui.book.source.debug
 
 import android.content.Context
+import android.view.View
 import io.legado.app.R
 import io.legado.app.base.adapter.ItemViewHolder
 import io.legado.app.base.adapter.SimpleRecyclerAdapter
@@ -10,6 +11,18 @@ class BookSourceDebugAdapter(context: Context) :
     SimpleRecyclerAdapter<String>(context, R.layout.item_log) {
     override fun convert(holder: ItemViewHolder, item: String, payloads: MutableList<Any>) {
         holder.itemView.apply {
+            if (text_view.getTag(R.id.tag1) == null) {
+                val listener = object : View.OnAttachStateChangeListener {
+                    override fun onViewAttachedToWindow(v: View) {
+                        text_view.isCursorVisible = false
+                        text_view.isCursorVisible = true
+                    }
+
+                    override fun onViewDetachedFromWindow(v: View) {}
+                }
+                text_view.addOnAttachStateChangeListener(listener)
+                text_view.setTag(R.id.tag1, listener)
+            }
             text_view.text = 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 ec1359b63..20661274d 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
@@ -249,8 +249,11 @@ class BookSourceActivity : VMBaseActivity<BookSourceViewModel>(R.layout.activity
             }
             importSource -> if (resultCode == Activity.RESULT_OK) {
                 data?.data?.let {
-                    FileUtils.getPath(this, it)?.let { path ->
+                    val path = FileUtils.getPath(this, it)
+                    if (path != null) {
                         viewModel.importSourceFromFilePath(path)
+                    } else {
+                        toast(R.string.uri_to_path_fail)
                     }
                 }
             }
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 7a3b5bb91..4c36f0d59 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
@@ -42,19 +42,25 @@ class BookSourceViewModel(application: Application) : BaseViewModel(application)
 
     fun enableSelection(ids: LinkedHashSet<String>) {
         execute {
-            App.db.bookSourceDao().enableSection(*ids.toTypedArray())
+            ids.forEach {
+                App.db.bookSourceDao().enableSection(it)
+            }
         }
     }
 
     fun disableSelection(ids: LinkedHashSet<String>) {
         execute {
-            App.db.bookSourceDao().disableSection(*ids.toTypedArray())
+            ids.forEach {
+                App.db.bookSourceDao().disableSection(it)
+            }
         }
     }
 
     fun delSelection(ids: LinkedHashSet<String>) {
         execute {
-            App.db.bookSourceDao().delSection(*ids.toTypedArray())
+            ids.forEach {
+                App.db.bookSourceDao().delSection(it)
+            }
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/widget/page/curl/CurlRenderer.kt b/app/src/main/java/io/legado/app/ui/widget/page/curl/CurlRenderer.kt
index dc0e124d5..d2125b1f3 100644
--- a/app/src/main/java/io/legado/app/ui/widget/page/curl/CurlRenderer.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/page/curl/CurlRenderer.kt
@@ -14,11 +14,7 @@ import javax.microedition.khronos.opengles.GL10
  *
  * @author harism
  */
-class CurlRenderer
-/**
- * Basic constructor.
- */
-    (private val mObserver: Observer) : GLSurfaceView.Renderer {
+class CurlRenderer(private val mObserver: Observer) : GLSurfaceView.Renderer {
     // Background fill color.
     private var mBackgroundColor: Int = 0
     // Curl meshes used for static and dynamic rendering.
@@ -71,10 +67,6 @@ class CurlRenderer
         gl.glClear(GL10.GL_COLOR_BUFFER_BIT)
         gl.glLoadIdentity()
 
-        if (USE_PERSPECTIVE_PROJECTION) {
-            gl.glTranslatef(0f, 0f, -6f)
-        }
-
         for (i in mCurlMeshes.indices) {
             mCurlMeshes[i].onDrawFrame(gl)
         }
@@ -94,14 +86,10 @@ class CurlRenderer
 
         gl.glMatrixMode(GL10.GL_PROJECTION)
         gl.glLoadIdentity()
-        if (USE_PERSPECTIVE_PROJECTION) {
-            GLU.gluPerspective(gl, 20f, width.toFloat() / height, .1f, 100f)
-        } else {
-            GLU.gluOrtho2D(
-                gl, mViewRect.left, mViewRect.right,
-                mViewRect.bottom, mViewRect.top
-            )
-        }
+        GLU.gluOrtho2D(
+            gl, mViewRect.left, mViewRect.right,
+            mViewRect.bottom, mViewRect.top
+        )
 
         gl.glMatrixMode(GL10.GL_MODELVIEW)
         gl.glLoadIdentity()
@@ -128,29 +116,6 @@ class CurlRenderer
         mCurlMeshes.remove(mesh)
     }
 
-    /**
-     * Change background/clear color.
-     */
-    fun setBackgroundColor(color: Int) {
-        mBackgroundColor = color
-    }
-
-    /**
-     * Set margins or padding. Note: margins are proportional. Meaning a value
-     * of .1f will produce a 10% margin.
-     */
-    @Synchronized
-    fun setMargins(
-        left: Float, top: Float, right: Float,
-        bottom: Float
-    ) {
-        mMargins.left = left
-        mMargins.top = top
-        mMargins.right = right
-        mMargins.bottom = bottom
-        updatePageRects()
-    }
-
     /**
      * Sets visible page count to one or two. Should be either SHOW_ONE_PAGE or
      * SHOW_TWO_PAGES.
@@ -246,7 +211,5 @@ class CurlRenderer
         // Constants for changing view mode.
         const val SHOW_ONE_PAGE = 1
         const val SHOW_TWO_PAGES = 2
-        // Set to true for checking quickly how perspective projection looks.
-        private const val USE_PERSPECTIVE_PROJECTION = false
     }
 }
diff --git a/app/src/main/java/io/legado/app/ui/widget/page/curl/CurlView.kt b/app/src/main/java/io/legado/app/ui/widget/page/curl/CurlView.kt
index a6089c4bc..2b62974ef 100644
--- a/app/src/main/java/io/legado/app/ui/widget/page/curl/CurlView.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/page/curl/CurlView.kt
@@ -410,14 +410,6 @@ class CurlView : GLSurfaceView, View.OnTouchListener, CurlRenderer.Observer {
         mEnableTouchPressure = enableTouchPressure
     }
 
-    /**
-     * Set margins (or padding). Note: margins are proportional. Meaning a value
-     * of .1f will produce a 10% margin.
-     */
-    fun setMargins(left: Float, top: Float, right: Float, bottom: Float) {
-        mRenderer.setMargins(left, top, right, bottom)
-    }
-
     /**
      * Setter for whether left side page is rendered. This is useful mostly for
      * situations where right (main) page is aligned to left side of screen and
diff --git a/app/src/main/java/io/legado/app/ui/widget/page/delegate/SimulationPageDelegate.kt b/app/src/main/java/io/legado/app/ui/widget/page/delegate/SimulationPageDelegate.kt
index d7ee69211..e28b63509 100644
--- a/app/src/main/java/io/legado/app/ui/widget/page/delegate/SimulationPageDelegate.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/page/delegate/SimulationPageDelegate.kt
@@ -56,7 +56,6 @@ class SimulationPageDelegate(pageView: PageView) : HorizontalPageDelegate(pageVi
     private inner class SizeChangedObserver : CurlView.SizeChangedObserver {
         override fun onSizeChanged(width: Int, height: Int) {
             pageView.curlView?.setViewMode(CurlView.SHOW_ONE_PAGE)
-            pageView.curlView?.setMargins(0f, 0f, 0f, 0f)
         }
     }
 }
\ No newline at end of file
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 533504279..39148fe76 100644
--- a/app/src/main/java/io/legado/app/utils/FileUtils.kt
+++ b/app/src/main/java/io/legado/app/utils/FileUtils.kt
@@ -92,7 +92,7 @@ object FileUtils {
             // ExternalStorageProvider
             if (isExternalStorageDocument(uri)) {
                 val docId = DocumentsContract.getDocumentId(uri)
-                val split = docId.split(":".toRegex()).dropLastWhile { it.isEmpty() }.toTypedArray()
+                val split = docId.split(":")
                 val type = split[0]
 
                 if ("primary".equals(type, ignoreCase = true)) {
@@ -101,7 +101,7 @@ object FileUtils {
 
             } else if (isDownloadsDocument(uri)) {
                 val id = DocumentsContract.getDocumentId(uri)
-                val split = id.split(":").dropLastWhile { it.isEmpty() }.toTypedArray()
+                val split = id.split(":")
                 val type = split[0]
                 if ("raw".equals(type, ignoreCase = true)) {
                     //处理某些机型（比如Google Pixel ）ID是raw:/storage/emulated/0/Download/c20f8664da05ab6b4644913048ea8c83.mp4
@@ -115,14 +115,13 @@ object FileUtils {
                 return getDataColumn(context, contentUri, null, null)
             } else if (isMediaDocument(uri)) {
                 val docId = DocumentsContract.getDocumentId(uri)
-                val split = docId.split(":".toRegex()).dropLastWhile { it.isEmpty() }.toTypedArray()
-                val type = split[0]
+                val split = docId.split(":".toRegex())
 
-                var contentUri: Uri? = null
-                when (type) {
-                    "image" -> contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI
-                    "video" -> contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI
-                    "audio" -> contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI
+                val contentUri: Uri = when (split[0]) {
+                    "image" -> MediaStore.Images.Media.EXTERNAL_CONTENT_URI
+                    "video" -> MediaStore.Video.Media.EXTERNAL_CONTENT_URI
+                    "audio" -> MediaStore.Audio.Media.EXTERNAL_CONTENT_URI
+                    else -> uri
                 }
 
                 val selection = "_id=?"
@@ -137,7 +136,6 @@ object FileUtils {
                 uri.lastPathSegment
             else
                 getDataColumn(context, uri, null, null)
-
         } else if ("file".equals(uri.scheme, ignoreCase = true)) {
             return uri.path
         }// File
@@ -145,8 +143,8 @@ object FileUtils {
         return null
     }
 
-    fun getDataColumn(
-        context: Context, uri: Uri?, selection: String?,
+    private fun getDataColumn(
+        context: Context, uri: Uri, selection: String?,
         selectionArgs: kotlin.Array<String>?
     ): String? {
 
@@ -155,7 +153,7 @@ object FileUtils {
 
         try {
             context.contentResolver.query(
-                uri!!,
+                uri,
                 projection,
                 selection,
                 selectionArgs,
@@ -177,7 +175,7 @@ object FileUtils {
      * @param uri The Uri to check.
      * @return Whether the Uri authority is ExternalStorageProvider.
      */
-    fun isExternalStorageDocument(uri: Uri): Boolean {
+    private fun isExternalStorageDocument(uri: Uri): Boolean {
         return "com.android.externalstorage.documents" == uri.authority
     }
 
@@ -185,7 +183,7 @@ object FileUtils {
      * @param uri The Uri to check.
      * @return Whether the Uri authority is DownloadsProvider.
      */
-    fun isDownloadsDocument(uri: Uri): Boolean {
+    private fun isDownloadsDocument(uri: Uri): Boolean {
         return "com.android.providers.downloads.documents" == uri.authority
     }
 
@@ -193,7 +191,7 @@ object FileUtils {
      * @param uri The Uri to check.
      * @return Whether the Uri authority is MediaProvider.
      */
-    fun isMediaDocument(uri: Uri): Boolean {
+    private fun isMediaDocument(uri: Uri): Boolean {
         return "com.android.providers.media.documents" == uri.authority
     }
 
@@ -201,7 +199,7 @@ object FileUtils {
      * @param uri The Uri to check.
      * @return Whether the Uri authority is Google Photos.
      */
-    fun isGooglePhotosUri(uri: Uri): Boolean {
+    private fun isGooglePhotosUri(uri: Uri): Boolean {
         return "com.google.android.apps.photos.content" == uri.authority
     }
 
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index b9d9f260a..dc4bb8af1 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -540,5 +540,6 @@
     <string name="file_chooser">文件选择</string>
     <string name="folder_chooser">文件夹选择</string>
     <string name="bottom_line">我是有底线的</string>
+    <string name="uri_to_path_fail">Uri转Path失败</string>
 
 </resources>