diff --git a/app/src/main/java/io/legado/app/base/BaseDialogFragment.kt b/app/src/main/java/io/legado/app/base/BaseDialogFragment.kt
index 84e9d4b0b..7e016521a 100644
--- a/app/src/main/java/io/legado/app/base/BaseDialogFragment.kt
+++ b/app/src/main/java/io/legado/app/base/BaseDialogFragment.kt
@@ -4,6 +4,7 @@ import android.os.Bundle
 import android.view.View
 import androidx.fragment.app.DialogFragment
 import io.legado.app.help.coroutine.Coroutine
+import io.legado.app.lib.theme.ThemeStore
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
@@ -21,6 +22,7 @@ abstract class BaseDialogFragment : DialogFragment(), CoroutineScope {
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
+        view.setBackgroundColor(ThemeStore.backgroundColor())
         onFragmentCreated(view, savedInstanceState)
         observeLiveBus()
     }
diff --git a/app/src/main/java/io/legado/app/data/entities/Book.kt b/app/src/main/java/io/legado/app/data/entities/Book.kt
index 104520ff3..02106085a 100644
--- a/app/src/main/java/io/legado/app/data/entities/Book.kt
+++ b/app/src/main/java/io/legado/app/data/entities/Book.kt
@@ -60,6 +60,10 @@ data class Book(
         return isLocalBook() && originName.endsWith(".txt", true)
     }
 
+    fun isEpub(): Boolean {
+        return originName.endsWith(".epub", true)
+    }
+
     fun isOnLineTxt(): Boolean {
         return !isLocalBook() && type == 0
     }
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 3c0fa644e..d6d36bf9a 100644
--- a/app/src/main/java/io/legado/app/help/BookHelp.kt
+++ b/app/src/main/java/io/legado/app/help/BookHelp.kt
@@ -6,7 +6,7 @@ import io.legado.app.constant.EventBus
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookChapter
 import io.legado.app.data.entities.ReplaceRule
-import io.legado.app.model.localBook.AnalyzeTxtFile
+import io.legado.app.model.localBook.LocalBook
 import io.legado.app.utils.FileUtils
 import io.legado.app.utils.MD5Utils
 import io.legado.app.utils.postEvent
@@ -81,7 +81,7 @@ object BookHelp {
 
     fun getContent(book: Book, bookChapter: BookChapter): String? {
         if (book.isLocalBook()) {
-            return AnalyzeTxtFile.getContent(book, bookChapter)
+            return LocalBook.getContext(book, bookChapter)
         } else {
             val file = FileUtils.getFile(
                 downloadDir,
diff --git a/app/src/main/java/io/legado/app/model/localBook/AnalyzeTxtFile.kt b/app/src/main/java/io/legado/app/model/localBook/AnalyzeTxtFile.kt
index f9cfb846c..86666598a 100644
--- a/app/src/main/java/io/legado/app/model/localBook/AnalyzeTxtFile.kt
+++ b/app/src/main/java/io/legado/app/model/localBook/AnalyzeTxtFile.kt
@@ -1,6 +1,5 @@
 package io.legado.app.model.localBook
 
-import android.content.Context
 import android.net.Uri
 import io.legado.app.App
 import io.legado.app.data.entities.Book
@@ -19,8 +18,8 @@ class AnalyzeTxtFile {
     private lateinit var charset: Charset
 
     @Throws(Exception::class)
-    fun analyze(context: Context, book: Book): ArrayList<BookChapter> {
-        val bookFile = getBookFile(context, book)
+    fun analyze(book: Book): ArrayList<BookChapter> {
+        val bookFile = getBookFile(book)
         book.charset = EncodingDetect.getEncode(bookFile)
         charset = book.fileCharset()
         val rulePattern = if (book.tocUrl.isNotEmpty()) {
@@ -253,7 +252,7 @@ class AnalyzeTxtFile {
         }
 
         fun getContent(book: Book, bookChapter: BookChapter): String {
-            val bookFile = getBookFile(App.INSTANCE, book)
+            val bookFile = getBookFile(book)
             //获取文件流
             val bookStream = RandomAccessFile(bookFile, "r")
             val content = ByteArray((bookChapter.end!! - bookChapter.start!!).toInt())
@@ -262,13 +261,13 @@ class AnalyzeTxtFile {
             return String(content, book.fileCharset())
         }
 
-        private fun getBookFile(context: Context, book: Book): File {
+        private fun getBookFile(book: Book): File {
             if (book.bookUrl.isContentPath()) {
                 val uri = Uri.parse(book.bookUrl)
                 val bookFile = FileUtils.getFile(cacheFolder, book.originName, subDirs = *arrayOf())
                 if (!bookFile.exists()) {
                     bookFile.createNewFile()
-                    DocumentUtils.readBytes(context, uri)?.let {
+                    DocumentUtils.readBytes(App.INSTANCE, uri)?.let {
                         bookFile.writeBytes(it)
                     }
                 }
diff --git a/app/src/main/java/io/legado/app/model/localBook/EPUBFile.kt b/app/src/main/java/io/legado/app/model/localBook/EPUBFile.kt
index 33986f094..1a4b512b1 100644
--- a/app/src/main/java/io/legado/app/model/localBook/EPUBFile.kt
+++ b/app/src/main/java/io/legado/app/model/localBook/EPUBFile.kt
@@ -1,8 +1,8 @@
 package io.legado.app.model.localBook
 
-import android.content.Context
 import android.net.Uri
 import android.text.TextUtils
+import io.legado.app.App
 import io.legado.app.data.entities.BookChapter
 import io.legado.app.utils.htmlFormat
 import io.legado.app.utils.isContentPath
@@ -15,8 +15,30 @@ import java.io.IOException
 import java.nio.charset.Charset
 import java.util.*
 
-class EPUBFile(context: Context, val book: io.legado.app.data.entities.Book) {
-    var epubBook: Book? = null
+class EPUBFile(val book: io.legado.app.data.entities.Book) {
+
+    companion object {
+        private var eFile: EPUBFile? = null
+
+        @Synchronized
+        fun getEFile(book: io.legado.app.data.entities.Book): EPUBFile {
+            if (eFile == null || eFile?.book?.bookUrl == book.bookUrl) {
+                eFile = EPUBFile(book)
+                return eFile!!
+            }
+            return eFile!!
+        }
+
+        fun getChapterList(book: io.legado.app.data.entities.Book): ArrayList<BookChapter> {
+            return getEFile(book).getChapterList()
+        }
+
+        fun getContent(book: io.legado.app.data.entities.Book, chapter: BookChapter): String? {
+            return getEFile(book).getContent(chapter)
+        }
+    }
+
+    private var epubBook: Book? = null
     private lateinit var mCharset: Charset
 
     init {
@@ -24,7 +46,7 @@ class EPUBFile(context: Context, val book: io.legado.app.data.entities.Book) {
             val epubReader = EpubReader()
             val inputStream = if (book.bookUrl.isContentPath()) {
                 val uri = Uri.parse(book.bookUrl)
-                context.contentResolver.openInputStream(uri)
+                App.INSTANCE.contentResolver.openInputStream(uri)
             } else {
                 File(book.bookUrl).inputStream()
             }
@@ -33,88 +55,90 @@ class EPUBFile(context: Context, val book: io.legado.app.data.entities.Book) {
         }
     }
 
-    fun getContent(chapter: BookChapter): String {
-        val resource = epubBook!!.resources.getByHref(chapter.url)
-        val content = StringBuilder()
-        val doc = Jsoup.parse(String(resource.data, mCharset))
-        val elements = doc.allElements
-        for (element in elements) {
-            val contentEs = element.textNodes()
-            for (i in contentEs.indices) {
-                val text = contentEs[i].text().trim { it <= ' ' }.htmlFormat()
-                if (elements.size > 1) {
-                    if (text.isNotEmpty()) {
-                        if (content.isNotEmpty()) {
-                            content.append("\r\n")
+    fun getContent(chapter: BookChapter): String? {
+        epubBook?.let { eBook ->
+            val resource = eBook.resources.getByHref(chapter.url)
+            val content = StringBuilder()
+            val doc = Jsoup.parse(String(resource.data, mCharset))
+            val elements = doc.allElements
+            for (element in elements) {
+                val contentEs = element.textNodes()
+                for (i in contentEs.indices) {
+                    val text = contentEs[i].text().trim { it <= ' ' }.htmlFormat()
+                    if (elements.size > 1) {
+                        if (text.isNotEmpty()) {
+                            if (content.isNotEmpty()) {
+                                content.append("\r\n")
+                            }
+                            content.append("\u3000\u3000").append(text)
                         }
-                        content.append("\u3000\u3000").append(text)
+                    } else {
+                        content.append(text)
                     }
-                } else {
-                    content.append(text)
                 }
             }
+            return content.toString()
         }
-        return content.toString()
+        return null
     }
 
-    fun getChapterList(epubBook: Book): ArrayList<BookChapter> {
-        val metadata = epubBook.metadata
-        book.name = metadata.firstTitle
-        if (metadata.authors.size > 0) {
-            val author =
-                metadata.authors[0].toString().replace("^, |, $".toRegex(), "")
-            book.author = author
-        }
-        if (metadata.descriptions.size > 0) {
-            book.intro = Jsoup.parse(metadata.descriptions[0]).text()
-        }
+    fun getChapterList(): ArrayList<BookChapter> {
         val chapterList = ArrayList<BookChapter>()
-        val refs =
-            epubBook.tableOfContents.tocReferences
-        if (refs == null || refs.isEmpty()) {
-            val spineReferences =
-                epubBook.spine.spineReferences
-            var i = 0
-            val size = spineReferences.size
-            while (i < size) {
-                val resource =
-                    spineReferences[i].resource
-                var title = resource.title
-                if (TextUtils.isEmpty(title)) {
-                    try {
-                        val doc =
-                            Jsoup.parse(String(resource.data, mCharset))
-                        val elements = doc.getElementsByTag("title")
-                        if (elements.size > 0) {
-                            title = elements[0].text()
+        epubBook?.let { eBook ->
+            val metadata = eBook.metadata
+            book.name = metadata.firstTitle
+            if (metadata.authors.size > 0) {
+                val author =
+                    metadata.authors[0].toString().replace("^, |, $".toRegex(), "")
+                book.author = author
+            }
+            if (metadata.descriptions.size > 0) {
+                book.intro = Jsoup.parse(metadata.descriptions[0]).text()
+            }
+
+            val refs = eBook.tableOfContents.tocReferences
+            if (refs == null || refs.isEmpty()) {
+                val spineReferences = eBook.spine.spineReferences
+                var i = 0
+                val size = spineReferences.size
+                while (i < size) {
+                    val resource =
+                        spineReferences[i].resource
+                    var title = resource.title
+                    if (TextUtils.isEmpty(title)) {
+                        try {
+                            val doc =
+                                Jsoup.parse(String(resource.data, mCharset))
+                            val elements = doc.getElementsByTag("title")
+                            if (elements.size > 0) {
+                                title = elements[0].text()
+                            }
+                        } catch (e: IOException) {
+                            e.printStackTrace()
                         }
-                    } catch (e: IOException) {
-                        e.printStackTrace()
                     }
+                    val chapter = BookChapter()
+                    chapter.index = i
+                    chapter.bookUrl = book.bookUrl
+                    chapter.url = resource.href
+                    if (i == 0 && title.isEmpty()) {
+                        chapter.title = "封面"
+                    } else {
+                        chapter.title = title
+                    }
+                    chapterList.add(chapter)
+                    i++
                 }
-                val chapter = BookChapter()
-                chapter.index = i
-                chapter.bookUrl = book.bookUrl
-                chapter.url = resource.href
-                if (i == 0 && title.isEmpty()) {
-                    chapter.title = "封面"
-                } else {
-                    chapter.title = title
+            } else {
+                parseMenu(chapterList, refs, 0)
+                for (i in chapterList.indices) {
+                    chapterList[i].index = i
                 }
-                chapterList.add(chapter)
-                i++
-            }
-        } else {
-            parseMenu(chapterList, refs, 0)
-            for (i in chapterList.indices) {
-                chapterList[i].index = i
             }
         }
-
         return chapterList
     }
 
-
     private fun parseMenu(
         chapterList: ArrayList<BookChapter>,
         refs: List<TOCReference>?,
diff --git a/app/src/main/java/io/legado/app/model/localBook/LocalBook.kt b/app/src/main/java/io/legado/app/model/localBook/LocalBook.kt
index 9195c87a5..7986f03ad 100644
--- a/app/src/main/java/io/legado/app/model/localBook/LocalBook.kt
+++ b/app/src/main/java/io/legado/app/model/localBook/LocalBook.kt
@@ -4,6 +4,7 @@ import android.net.Uri
 import androidx.documentfile.provider.DocumentFile
 import io.legado.app.App
 import io.legado.app.data.entities.Book
+import io.legado.app.data.entities.BookChapter
 import io.legado.app.help.BookHelp
 import io.legado.app.utils.FileUtils
 import io.legado.app.utils.isContentPath
@@ -12,6 +13,22 @@ import java.io.File
 
 object LocalBook {
 
+    fun getChapterList(book: Book): ArrayList<BookChapter> {
+        return if (book.isEpub()) {
+            EPUBFile.getChapterList(book)
+        } else {
+            AnalyzeTxtFile().analyze(book)
+        }
+    }
+
+    fun getContext(book: Book, chapter: BookChapter): String? {
+        return if (book.isEpub()) {
+            EPUBFile.getContent(book, chapter)
+        } else {
+            AnalyzeTxtFile.getContent(book, chapter)
+        }
+    }
+
     fun importFile(path: String) {
         val fileName = if (path.isContentPath()) {
             val doc = DocumentFile.fromSingleUri(App.INSTANCE, Uri.parse(path))
diff --git a/app/src/main/java/io/legado/app/ui/book/group/GroupManageDialog.kt b/app/src/main/java/io/legado/app/ui/book/group/GroupManageDialog.kt
index a5d719b57..0f0865cfc 100644
--- a/app/src/main/java/io/legado/app/ui/book/group/GroupManageDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/book/group/GroupManageDialog.kt
@@ -10,7 +10,6 @@ import android.view.View
 import android.view.ViewGroup
 import android.widget.EditText
 import androidx.appcompat.widget.Toolbar
-import androidx.fragment.app.DialogFragment
 import androidx.lifecycle.Observer
 import androidx.recyclerview.widget.DiffUtil
 import androidx.recyclerview.widget.ItemTouchHelper
@@ -18,6 +17,7 @@ import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import io.legado.app.App
 import io.legado.app.R
+import io.legado.app.base.BaseDialogFragment
 import io.legado.app.base.adapter.ItemViewHolder
 import io.legado.app.base.adapter.SimpleRecyclerAdapter
 import io.legado.app.constant.Theme
@@ -41,7 +41,7 @@ import org.jetbrains.anko.sdk27.listeners.onClick
 import java.util.*
 import kotlin.collections.ArrayList
 
-class GroupManageDialog : DialogFragment(), Toolbar.OnMenuItemClickListener {
+class GroupManageDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
     private lateinit var viewModel: GroupViewModel
     private lateinit var adapter: GroupAdapter
     private val callBack: CallBack? get() = parentFragment as? CallBack
@@ -62,8 +62,7 @@ class GroupManageDialog : DialogFragment(), Toolbar.OnMenuItemClickListener {
         return inflater.inflate(R.layout.dialog_recycler_view, container)
     }
 
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        super.onViewCreated(view, savedInstanceState)
+    override fun onFragmentCreated(view: View, savedInstanceState: Bundle?) {
         tool_bar.title = getString(R.string.group_manage)
         initData()
         initMenu()
diff --git a/app/src/main/java/io/legado/app/ui/book/group/GroupSelectDialog.kt b/app/src/main/java/io/legado/app/ui/book/group/GroupSelectDialog.kt
index 9440a7c46..53619816e 100644
--- a/app/src/main/java/io/legado/app/ui/book/group/GroupSelectDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/book/group/GroupSelectDialog.kt
@@ -10,7 +10,6 @@ import android.view.View
 import android.view.ViewGroup
 import android.widget.EditText
 import androidx.appcompat.widget.Toolbar
-import androidx.fragment.app.DialogFragment
 import androidx.fragment.app.FragmentManager
 import androidx.lifecycle.Observer
 import androidx.recyclerview.widget.ItemTouchHelper
@@ -18,6 +17,7 @@ import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import io.legado.app.App
 import io.legado.app.R
+import io.legado.app.base.BaseDialogFragment
 import io.legado.app.base.adapter.ItemViewHolder
 import io.legado.app.base.adapter.SimpleRecyclerAdapter
 import io.legado.app.constant.Theme
@@ -40,7 +40,7 @@ import kotlinx.android.synthetic.main.item_group_select.view.*
 import org.jetbrains.anko.sdk27.listeners.onClick
 import java.util.*
 
-class GroupSelectDialog : DialogFragment(), Toolbar.OnMenuItemClickListener {
+class GroupSelectDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
 
     companion object {
         const val tag = "groupSelectDialog"
@@ -78,8 +78,7 @@ class GroupSelectDialog : DialogFragment(), Toolbar.OnMenuItemClickListener {
         return inflater.inflate(R.layout.dialog_book_group_picker, container)
     }
 
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        super.onViewCreated(view, savedInstanceState)
+    override fun onFragmentCreated(view: View, savedInstanceState: Bundle?) {
         callBack = activity as? CallBack
         arguments?.let {
             groupId = it.getInt("groupId")
diff --git a/app/src/main/java/io/legado/app/ui/book/read/ReadBookViewModel.kt b/app/src/main/java/io/legado/app/ui/book/read/ReadBookViewModel.kt
index e6d6b57e3..c7d812fc2 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/ReadBookViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/ReadBookViewModel.kt
@@ -11,7 +11,7 @@ import io.legado.app.help.AppConfig
 import io.legado.app.help.BookHelp
 import io.legado.app.help.IntentDataHelp
 import io.legado.app.model.WebBook
-import io.legado.app.model.localBook.AnalyzeTxtFile
+import io.legado.app.model.localBook.LocalBook
 import io.legado.app.service.BaseReadAloudService
 import io.legado.app.service.help.ReadAloud
 import io.legado.app.service.help.ReadBook
@@ -109,7 +109,7 @@ class ReadBookViewModel(application: Application) : BaseViewModel(application) {
     ) {
         execute {
             if (book.isLocalBook()) {
-                AnalyzeTxtFile().analyze(context, book).let {
+                LocalBook.getChapterList(book).let {
                     App.db.bookChapterDao().delByBook(book.bookUrl)
                     App.db.bookChapterDao().insert(*it.toTypedArray())
                     App.db.bookDao().update(book)
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 0027f3209..e66ce611d 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
@@ -10,10 +10,10 @@ import android.view.ViewGroup.LayoutParams.WRAP_CONTENT
 import android.widget.EditText
 import android.widget.PopupWindow
 import androidx.appcompat.widget.Toolbar
-import androidx.fragment.app.DialogFragment
 import androidx.fragment.app.FragmentManager
 import androidx.lifecycle.Observer
 import io.legado.app.R
+import io.legado.app.base.BaseDialogFragment
 import io.legado.app.constant.AppConst
 import io.legado.app.constant.Theme
 import io.legado.app.data.entities.ReplaceRule
@@ -24,7 +24,7 @@ import io.legado.app.utils.toast
 import kotlinx.android.synthetic.main.dialog_replace_edit.*
 import org.jetbrains.anko.sdk27.listeners.onFocusChange
 
-class ReplaceEditDialog : DialogFragment(),
+class ReplaceEditDialog : BaseDialogFragment(),
     Toolbar.OnMenuItemClickListener,
     KeyboardToolPop.CallBack {
 
@@ -63,8 +63,7 @@ class ReplaceEditDialog : DialogFragment(),
         return inflater.inflate(R.layout.dialog_replace_edit, container)
     }
 
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        super.onViewCreated(view, savedInstanceState)
+    override fun onFragmentCreated(view: View, savedInstanceState: Bundle?) {
         mSoftKeyboardTool = KeyboardToolPop(requireContext(), AppConst.keyboardToolChars, this)
         tool_bar.inflateMenu(R.menu.replace_edit)
         tool_bar.menu.applyTint(requireContext(), Theme.getTheme())
diff --git a/app/src/main/java/io/legado/app/ui/rss/source/manage/GroupManageDialog.kt b/app/src/main/java/io/legado/app/ui/rss/source/manage/GroupManageDialog.kt
index ce2313f5a..b5a92d099 100644
--- a/app/src/main/java/io/legado/app/ui/rss/source/manage/GroupManageDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/rss/source/manage/GroupManageDialog.kt
@@ -10,11 +10,11 @@ import android.view.View
 import android.view.ViewGroup
 import android.widget.EditText
 import androidx.appcompat.widget.Toolbar
-import androidx.fragment.app.DialogFragment
 import androidx.lifecycle.Observer
 import androidx.recyclerview.widget.LinearLayoutManager
 import io.legado.app.App
 import io.legado.app.R
+import io.legado.app.base.BaseDialogFragment
 import io.legado.app.base.adapter.ItemViewHolder
 import io.legado.app.base.adapter.SimpleRecyclerAdapter
 import io.legado.app.constant.Theme
@@ -30,7 +30,7 @@ import kotlinx.android.synthetic.main.dialog_recycler_view.*
 import kotlinx.android.synthetic.main.item_group_manage.view.*
 import org.jetbrains.anko.sdk27.listeners.onClick
 
-class GroupManageDialog : DialogFragment(), Toolbar.OnMenuItemClickListener {
+class GroupManageDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
     private lateinit var viewModel: RssSourceViewModel
     private lateinit var adapter: GroupAdapter
 
@@ -50,12 +50,7 @@ class GroupManageDialog : DialogFragment(), Toolbar.OnMenuItemClickListener {
         return inflater.inflate(R.layout.dialog_recycler_view, container)
     }
 
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        super.onViewCreated(view, savedInstanceState)
-        initData()
-    }
-
-    private fun initData() {
+    override fun onFragmentCreated(view: View, savedInstanceState: Bundle?) {
         tool_bar.title = getString(R.string.group_manage)
         tool_bar.inflateMenu(R.menu.group_manage)
         tool_bar.menu.applyTint(requireContext(), Theme.getTheme())
diff --git a/app/src/main/java/io/legado/app/ui/widget/prefs/IconListPreference.kt b/app/src/main/java/io/legado/app/ui/widget/prefs/IconListPreference.kt
index fa8b4eeb7..eea138375 100644
--- a/app/src/main/java/io/legado/app/ui/widget/prefs/IconListPreference.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/prefs/IconListPreference.kt
@@ -10,12 +10,12 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.ImageView
-import androidx.fragment.app.DialogFragment
 import androidx.fragment.app.FragmentActivity
 import androidx.preference.ListPreference
 import androidx.preference.PreferenceViewHolder
 import androidx.recyclerview.widget.LinearLayoutManager
 import io.legado.app.R
+import io.legado.app.base.BaseDialogFragment
 import io.legado.app.base.adapter.ItemViewHolder
 import io.legado.app.base.adapter.SimpleRecyclerAdapter
 import io.legado.app.utils.getCompatDrawable
@@ -109,7 +109,7 @@ class IconListPreference(context: Context, attrs: AttributeSet) : ListPreference
         return "icon_$key"
     }
 
-    class IconDialog : DialogFragment() {
+    class IconDialog : BaseDialogFragment() {
 
         var onChanged: ((value: String) -> Unit)? = null
         var dialogValue: String? = null
@@ -135,8 +135,7 @@ class IconListPreference(context: Context, attrs: AttributeSet) : ListPreference
             return inflater.inflate(R.layout.dialog_recycler_view, container)
         }
 
-        override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-            super.onViewCreated(view, savedInstanceState)
+        override fun onFragmentCreated(view: View, savedInstanceState: Bundle?) {
             tool_bar.setTitle(R.string.change_icon)
             recycler_view.layoutManager = LinearLayoutManager(requireContext())
             val adapter = Adapter(requireContext())
diff --git a/app/src/main/res/layout/dialog_file_chooser.xml b/app/src/main/res/layout/dialog_file_chooser.xml
index ab5974114..7615ba752 100644
--- a/app/src/main/res/layout/dialog_file_chooser.xml
+++ b/app/src/main/res/layout/dialog_file_chooser.xml
@@ -2,7 +2,8 @@
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:orientation="vertical"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    android:background="@color/background">
 
     <androidx.appcompat.widget.Toolbar
         android:id="@+id/tool_bar"
diff --git a/app/src/main/res/layout/dialog_text_view.xml b/app/src/main/res/layout/dialog_text_view.xml
index c1a1a70a6..df50b0e81 100644
--- a/app/src/main/res/layout/dialog_text_view.xml
+++ b/app/src/main/res/layout/dialog_text_view.xml
@@ -1,8 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
+    android:background="@color/background">
 
     <io.legado.app.ui.widget.text.InertiaScrollTextView
         android:id="@+id/text_view"
@@ -17,8 +18,8 @@
         android:layout_height="wrap_content"
         android:layout_margin="3dp"
         android:visibility="invisible"
-        app:layout_constraintTop_toTopOf="parent"
-        app:layout_constraintRight_toRightOf="parent" />
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>