diff --git a/app/src/main/java/io/legado/app/App.kt b/app/src/main/java/io/legado/app/App.kt
index a49704169..db6b657f4 100644
--- a/app/src/main/java/io/legado/app/App.kt
+++ b/app/src/main/java/io/legado/app/App.kt
@@ -17,6 +17,7 @@ import io.legado.app.data.AppDatabase
 import io.legado.app.help.*
 import io.legado.app.utils.LanguageUtils
 import io.legado.app.utils.postEvent
+import org.jetbrains.anko.defaultSharedPreferences
 
 @Suppress("DEPRECATION")
 class App : MultiDexApplication() {
@@ -33,6 +34,8 @@ class App : MultiDexApplication() {
         lateinit var androidId: String
         var versionCode = 0
         var versionName = ""
+
+
     }
 
     override fun onCreate() {
@@ -53,8 +56,8 @@ class App : MultiDexApplication() {
             .supportBroadcast(this)
             .lifecycleObserverAlwaysActive(true)
             .autoClear(false)
-
         registerActivityLifecycleCallbacks(ActivityHelp)
+        defaultSharedPreferences.registerOnSharedPreferenceChangeListener(AppConfig)
     }
 
     override fun onConfigurationChanged(newConfig: Configuration) {
@@ -66,7 +69,6 @@ class App : MultiDexApplication() {
     }
 
     fun applyDayNight() {
-        AppConfig.upEInkMode()
         ReadBookConfig.upBg()
         ThemeConfig.applyTheme(this)
         initNightMode()
diff --git a/app/src/main/java/io/legado/app/constant/AppConst.kt b/app/src/main/java/io/legado/app/constant/AppConst.kt
index ec37a11a2..5cbb5a48b 100644
--- a/app/src/main/java/io/legado/app/constant/AppConst.kt
+++ b/app/src/main/java/io/legado/app/constant/AppConst.kt
@@ -1,6 +1,8 @@
 package io.legado.app.constant
 
 import android.annotation.SuppressLint
+import io.legado.app.App
+import io.legado.app.R
 import java.text.SimpleDateFormat
 import javax.script.ScriptEngine
 import javax.script.ScriptEngineManager
@@ -16,10 +18,6 @@ object AppConst {
 
     const val UA_NAME = "User-Agent"
 
-    val userAgent: String by lazy {
-        "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36"
-    }
-
     val SCRIPT_ENGINE: ScriptEngine by lazy {
         ScriptEngineManager().getEngineByName("rhino")
     }
@@ -69,4 +67,6 @@ object AppConst {
         "com.android.internal.view.menu.ListMenuItemView",
         "androidx.appcompat.view.menu.ListMenuItemView"
     )
+
+    val sysElevation = App.INSTANCE.resources.getDimension(R.dimen.design_appbar_elevation).toInt()
 }
\ No newline at end of file
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 1f99d7cba..22a96517a 100644
--- a/app/src/main/java/io/legado/app/constant/PreferKey.kt
+++ b/app/src/main/java/io/legado/app/constant/PreferKey.kt
@@ -1,19 +1,19 @@
 package io.legado.app.constant
 
 object PreferKey {
-    const val versionCode = "versionCode"
     const val language = "language"
     const val themeMode = "themeMode"
+    const val userAgent = "userAgent"
     const val hideStatusBar = "hideStatusBar"
-    const val clickActionTopLeft = "clickActionTopLeft"
-    const val clickActionTopCenter = "clickActionTopCenter"
-    const val clickActionTopRight = "clickActionTopRight"
-    const val clickActionMiddleLeft = "clickActionMiddleLeft"
-    const val clickActionMiddleCenter = "clickActionMiddleCenter"
-    const val clickActionMiddleRight = "clickActionMiddleRight"
-    const val clickActionBottomLeft = "clickActionBottomLeft"
-    const val clickActionBottomCenter = "clickActionBottomCenter"
-    const val clickActionBottomRight = "clickActionBottomRight"
+    const val clickActionTL = "clickActionTopLeft"
+    const val clickActionTC = "clickActionTopCenter"
+    const val clickActionTR = "clickActionTopRight"
+    const val clickActionML = "clickActionMiddleLeft"
+    const val clickActionMC = "clickActionMiddleCenter"
+    const val clickActionMR = "clickActionMiddleRight"
+    const val clickActionBL = "clickActionBottomLeft"
+    const val clickActionBC = "clickActionBottomCenter"
+    const val clickActionBR = "clickActionBottomRight"
     const val hideNavigationBar = "hideNavigationBar"
     const val precisionSearch = "precisionSearch"
     const val speakEngine = "speakEngine"
diff --git a/app/src/main/java/io/legado/app/data/entities/BookChapter.kt b/app/src/main/java/io/legado/app/data/entities/BookChapter.kt
index 1668ef19c..c9c1d63c1 100644
--- a/app/src/main/java/io/legado/app/data/entities/BookChapter.kt
+++ b/app/src/main/java/io/legado/app/data/entities/BookChapter.kt
@@ -65,7 +65,7 @@ data class BookChapter(
         val urlArray = url.split(AnalyzeUrl.splitUrlRegex)
         var absoluteUrl = NetworkUtils.getAbsoluteURL(baseUrl, urlArray[0])!!
         if (urlArray.size > 1) {
-            absoluteUrl += urlArray[1]
+            absoluteUrl = "$absoluteUrl,${urlArray[1]}"
         }
         return absoluteUrl
     }
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 29ffdcfd1..1169ba690 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
@@ -5,11 +5,14 @@ import android.text.TextUtils
 import androidx.room.*
 import io.legado.app.App
 import io.legado.app.constant.AppConst
-import io.legado.app.constant.AppConst.userAgent
 import io.legado.app.constant.BookType
 import io.legado.app.data.entities.rule.*
+import io.legado.app.help.AppConfig
 import io.legado.app.help.JsExtensions
-import io.legado.app.utils.*
+import io.legado.app.utils.ACache
+import io.legado.app.utils.GSON
+import io.legado.app.utils.fromJsonObject
+import io.legado.app.utils.splitNotBlank
 import kotlinx.android.parcel.Parcelize
 import javax.script.SimpleBindings
 
@@ -51,7 +54,7 @@ data class BookSource(
     
     @Throws(Exception::class)
     fun getHeaderMap() = (HashMap<String, String>().apply {
-        this[AppConst.UA_NAME] = App.INSTANCE.getPrefString("user_agent") ?: userAgent
+        this[AppConst.UA_NAME] = AppConfig.userAgent
         header?.let {
             GSON.fromJsonObject<Map<String, String>>(
                 when {
diff --git a/app/src/main/java/io/legado/app/data/entities/RssSource.kt b/app/src/main/java/io/legado/app/data/entities/RssSource.kt
index 90418f0c0..0b40b3f13 100644
--- a/app/src/main/java/io/legado/app/data/entities/RssSource.kt
+++ b/app/src/main/java/io/legado/app/data/entities/RssSource.kt
@@ -4,12 +4,11 @@ import android.os.Parcelable
 import androidx.room.Entity
 import androidx.room.Index
 import androidx.room.PrimaryKey
-import io.legado.app.App
 import io.legado.app.constant.AppConst
+import io.legado.app.help.AppConfig
 import io.legado.app.help.JsExtensions
 import io.legado.app.utils.GSON
 import io.legado.app.utils.fromJsonObject
-import io.legado.app.utils.getPrefString
 import kotlinx.android.parcel.Parcelize
 import java.util.*
 import javax.script.SimpleBindings
@@ -54,7 +53,7 @@ data class RssSource(
 
     @Throws(Exception::class)
     fun getHeaderMap() = HashMap<String, String>().apply {
-        this[AppConst.UA_NAME] = App.INSTANCE.getPrefString("user_agent") ?: AppConst.userAgent
+        this[AppConst.UA_NAME] = AppConfig.userAgent
         header?.let {
             GSON.fromJsonObject<Map<String, String>>(
                 when {
diff --git a/app/src/main/java/io/legado/app/help/AppConfig.kt b/app/src/main/java/io/legado/app/help/AppConfig.kt
index a6064e855..bf15b1781 100644
--- a/app/src/main/java/io/legado/app/help/AppConfig.kt
+++ b/app/src/main/java/io/legado/app/help/AppConfig.kt
@@ -1,29 +1,55 @@
 package io.legado.app.help
 
-import android.annotation.SuppressLint
 import android.content.Context
+import android.content.SharedPreferences
 import io.legado.app.App
 import io.legado.app.R
+import io.legado.app.constant.AppConst
 import io.legado.app.constant.PreferKey
 import io.legado.app.utils.*
 
 @Suppress("MemberVisibilityCanBePrivate")
-object AppConfig {
-    var isEInkMode: Boolean = false
-    val isGooglePlay: Boolean
-    val isCoolApk: Boolean
-    var replaceEnableDefault: Boolean = true
-    val sysElevation = App.INSTANCE.resources.getDimension(R.dimen.design_appbar_elevation).toInt()
-
-    init {
-        upConfig()
-        isGooglePlay = App.INSTANCE.channel == "google"
-        isCoolApk = App.INSTANCE.channel == "coolApk"
-    }
-
-    fun upConfig() {
-        upEInkMode()
-        upReplaceEnableDefault()
+object AppConfig : SharedPreferences.OnSharedPreferenceChangeListener {
+    private val context get() = App.INSTANCE
+    val isGooglePlay = context.channel == "google"
+    var userAgent: String = getPrefUserAgent()
+    var replaceEnableDefault = context.getPrefBoolean(PreferKey.replaceEnableDefault, true)
+    var isEInkMode = context.getPrefString(PreferKey.themeMode) == "3"
+    var clickActionTL = context.getPrefInt(PreferKey.clickActionTL, 2)
+    var clickActionTC = context.getPrefInt(PreferKey.clickActionTC, 2)
+    var clickActionTR = context.getPrefInt(PreferKey.clickActionTR, 1)
+    var clickActionML = context.getPrefInt(PreferKey.clickActionML, 2)
+    var clickActionMC = context.getPrefInt(PreferKey.clickActionMC, 0)
+    var clickActionMR = context.getPrefInt(PreferKey.clickActionMR, 1)
+    var clickActionBL = context.getPrefInt(PreferKey.clickActionBL, 2)
+    var clickActionBC = context.getPrefInt(PreferKey.clickActionBC, 1)
+    var clickActionBR = context.getPrefInt(PreferKey.clickActionBR, 1)
+
+    override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences?, key: String?) {
+        when (key) {
+            PreferKey.themeMode -> isEInkMode = context.getPrefString(PreferKey.themeMode) == "3"
+            PreferKey.clickActionTL -> clickActionTL =
+                context.getPrefInt(PreferKey.clickActionTL, 2)
+            PreferKey.clickActionTC -> clickActionTC =
+                context.getPrefInt(PreferKey.clickActionTC, 2)
+            PreferKey.clickActionTR -> clickActionTR =
+                context.getPrefInt(PreferKey.clickActionTR, 2)
+            PreferKey.clickActionML -> clickActionML =
+                context.getPrefInt(PreferKey.clickActionML, 2)
+            PreferKey.clickActionMC -> clickActionMC =
+                context.getPrefInt(PreferKey.clickActionMC, 2)
+            PreferKey.clickActionMR -> clickActionMR =
+                context.getPrefInt(PreferKey.clickActionMR, 2)
+            PreferKey.clickActionBL -> clickActionBL =
+                context.getPrefInt(PreferKey.clickActionBL, 2)
+            PreferKey.clickActionBC -> clickActionBC =
+                context.getPrefInt(PreferKey.clickActionBC, 2)
+            PreferKey.clickActionBR -> clickActionBR =
+                context.getPrefInt(PreferKey.clickActionBR, 2)
+            PreferKey.readBodyToLh -> ReadBookConfig.readBodyToLh =
+                context.getPrefBoolean(PreferKey.readBodyToLh, true)
+            PreferKey.userAgent -> userAgent = getPrefUserAgent()
+        }
     }
 
     fun isNightTheme(context: Context): Boolean {
@@ -36,117 +62,97 @@ object AppConfig {
     }
 
     var isNightTheme: Boolean
-        get() = isNightTheme(App.INSTANCE)
+        get() = isNightTheme(context)
         set(value) {
             if (isNightTheme != value) {
                 if (value) {
-                    App.INSTANCE.putPrefString(PreferKey.themeMode, "2")
+                    context.putPrefString(PreferKey.themeMode, "2")
                 } else {
-                    App.INSTANCE.putPrefString(PreferKey.themeMode, "1")
+                    context.putPrefString(PreferKey.themeMode, "1")
                 }
             }
         }
 
-    fun upEInkMode() {
-        isEInkMode = App.INSTANCE.getPrefString(PreferKey.themeMode) == "3"
-    }
-
     var isTransparentStatusBar: Boolean
-        get() = App.INSTANCE.getPrefBoolean(PreferKey.transparentStatusBar)
+        get() = context.getPrefBoolean(PreferKey.transparentStatusBar)
         set(value) {
-            App.INSTANCE.putPrefBoolean(PreferKey.transparentStatusBar, value)
+            context.putPrefBoolean(PreferKey.transparentStatusBar, value)
         }
 
     val requestedDirection: String?
-        get() = App.INSTANCE.getPrefString(R.string.pk_requested_direction)
+        get() = context.getPrefString(R.string.pk_requested_direction)
 
     var backupPath: String?
-        get() = App.INSTANCE.getPrefString(PreferKey.backupPath)
+        get() = context.getPrefString(PreferKey.backupPath)
         set(value) {
             if (value.isNullOrEmpty()) {
-                App.INSTANCE.removePref(PreferKey.backupPath)
+                context.removePref(PreferKey.backupPath)
             } else {
-                App.INSTANCE.putPrefString(PreferKey.backupPath, value)
+                context.putPrefString(PreferKey.backupPath, value)
             }
         }
 
-    var isShowRSS: Boolean
-        get() = App.INSTANCE.getPrefBoolean(PreferKey.showRss, true)
-        set(value) {
-            App.INSTANCE.putPrefBoolean(PreferKey.showRss, value)
-        }
+    val isShowRSS: Boolean
+        get() = context.getPrefBoolean(PreferKey.showRss, true)
 
     val autoRefreshBook: Boolean
-        get() = App.INSTANCE.getPrefBoolean(R.string.pk_auto_refresh)
+        get() = context.getPrefBoolean(R.string.pk_auto_refresh)
 
     var threadCount: Int
-        get() = App.INSTANCE.getPrefInt(PreferKey.threadCount, 16)
+        get() = context.getPrefInt(PreferKey.threadCount, 16)
         set(value) {
-            App.INSTANCE.putPrefInt(PreferKey.threadCount, value)
+            context.putPrefInt(PreferKey.threadCount, value)
         }
 
     var importBookPath: String?
-        get() = App.INSTANCE.getPrefString("importBookPath")
+        get() = context.getPrefString("importBookPath")
         set(value) {
             if (value == null) {
-                App.INSTANCE.removePref("importBookPath")
+                context.removePref("importBookPath")
             } else {
-                App.INSTANCE.putPrefString("importBookPath", value)
+                context.putPrefString("importBookPath", value)
             }
         }
 
     var ttsSpeechRate: Int
-        get() = App.INSTANCE.getPrefInt(PreferKey.ttsSpeechRate, 5)
+        get() = context.getPrefInt(PreferKey.ttsSpeechRate, 5)
         set(value) {
-            App.INSTANCE.putPrefInt(PreferKey.ttsSpeechRate, value)
+            context.putPrefInt(PreferKey.ttsSpeechRate, value)
         }
 
     var chineseConverterType: Int
-        get() = App.INSTANCE.getPrefInt(PreferKey.chineseConverterType)
+        get() = context.getPrefInt(PreferKey.chineseConverterType)
         set(value) {
-            App.INSTANCE.putPrefInt(PreferKey.chineseConverterType, value)
+            context.putPrefInt(PreferKey.chineseConverterType, value)
         }
 
     var systemTypefaces: Int
-        get() = App.INSTANCE.getPrefInt(PreferKey.systemTypefaces)
+        get() = context.getPrefInt(PreferKey.systemTypefaces)
         set(value) {
-            App.INSTANCE.putPrefInt(PreferKey.systemTypefaces, value)
+            context.putPrefInt(PreferKey.systemTypefaces, value)
         }
 
     var elevation: Int
-        @SuppressLint("PrivateResource")
-        get() = App.INSTANCE.getPrefInt(PreferKey.barElevation, sysElevation)
+        get() = context.getPrefInt(PreferKey.barElevation, AppConst.sysElevation)
         set(value) {
-            App.INSTANCE.putPrefInt(PreferKey.barElevation, value)
+            context.putPrefInt(PreferKey.barElevation, value)
         }
 
     val autoChangeSource: Boolean
-        get() = App.INSTANCE.getPrefBoolean(PreferKey.autoChangeSource, true)
-
-    val readBodyToLh: Boolean
-        get() = App.INSTANCE.getPrefBoolean(PreferKey.readBodyToLh, true)
-
-    fun upReplaceEnableDefault() {
-        replaceEnableDefault =
-            App.INSTANCE.getPrefBoolean(PreferKey.replaceEnableDefault, true)
-    }
+        get() = context.getPrefBoolean(PreferKey.autoChangeSource, true)
 
-    val changeSourceLoadInfo get() = App.INSTANCE.getPrefBoolean(PreferKey.changeSourceLoadToc)
+    val changeSourceLoadInfo get() = context.getPrefBoolean(PreferKey.changeSourceLoadToc)
 
-    val changeSourceLoadToc get() = App.INSTANCE.getPrefBoolean(PreferKey.changeSourceLoadToc)
+    val changeSourceLoadToc get() = context.getPrefBoolean(PreferKey.changeSourceLoadToc)
 
-    val importKeepName get() = App.INSTANCE.getPrefBoolean(PreferKey.importKeepName)
+    val importKeepName get() = context.getPrefBoolean(PreferKey.importKeepName)
 
-    val clickActionTopLeft get() = App.INSTANCE.getPrefInt(PreferKey.clickActionTopLeft, 2)
-    val clickActionTopCenter get() = App.INSTANCE.getPrefInt(PreferKey.clickActionTopCenter, 2)
-    val clickActionTopRight get() = App.INSTANCE.getPrefInt(PreferKey.clickActionTopRight, 1)
-    val clickActionMiddleLeft get() = App.INSTANCE.getPrefInt(PreferKey.clickActionMiddleLeft, 2)
-    val clickActionMiddleCenter
-        get() = App.INSTANCE.getPrefInt(PreferKey.clickActionMiddleCenter, 0)
-    val clickActionMiddleRight get() = App.INSTANCE.getPrefInt(PreferKey.clickActionMiddleRight, 1)
-    val clickActionBottomLeft get() = App.INSTANCE.getPrefInt(PreferKey.clickActionBottomLeft, 2)
-    val clickActionBottomCenter
-        get() = App.INSTANCE.getPrefInt(PreferKey.clickActionBottomCenter, 1)
-    val clickActionBottomRight get() = App.INSTANCE.getPrefInt(PreferKey.clickActionBottomRight, 1)
+    private fun getPrefUserAgent(): String {
+        val ua = context.getPrefString(PreferKey.userAgent)
+        if (ua.isNullOrBlank()) {
+            return "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36"
+        }
+        return ua
+    }
 }
 
diff --git a/app/src/main/java/io/legado/app/help/LocalConfig.kt b/app/src/main/java/io/legado/app/help/LocalConfig.kt
index 11c9ce430..686dd93f4 100644
--- a/app/src/main/java/io/legado/app/help/LocalConfig.kt
+++ b/app/src/main/java/io/legado/app/help/LocalConfig.kt
@@ -5,10 +5,19 @@ import androidx.core.content.edit
 import io.legado.app.App
 
 object LocalConfig {
+    private const val versionCodeKey = "versionCode"
 
     private val localConfig =
         App.INSTANCE.getSharedPreferences("local", Context.MODE_PRIVATE)
 
+    var versionCode
+        get() = localConfig.getInt(versionCodeKey, 0)
+        set(value) {
+            localConfig.edit {
+                putInt(versionCodeKey, value)
+            }
+        }
+
     val isFirstOpenApp: Boolean
         get() {
             val value = localConfig.getBoolean("firstOpen", true)
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 2303c414b..9515cbcff 100644
--- a/app/src/main/java/io/legado/app/help/ReadBookConfig.kt
+++ b/app/src/main/java/io/legado/app/help/ReadBookConfig.kt
@@ -22,8 +22,9 @@ import java.io.File
 object ReadBookConfig {
     const val configFileName = "readConfig.json"
     const val shareConfigFileName = "shareReadConfig.json"
-    val configFilePath = FileUtils.getPath(App.INSTANCE.filesDir, configFileName)
-    val shareConfigFilePath = FileUtils.getPath(App.INSTANCE.filesDir, shareConfigFileName)
+    val context get() = App.INSTANCE
+    val configFilePath = FileUtils.getPath(context.filesDir, configFileName)
+    val shareConfigFilePath = FileUtils.getPath(context.filesDir, shareConfigFileName)
     val configList: ArrayList<Config> = arrayListOf()
     lateinit var shareConfig: Config
     var durConfig
@@ -85,7 +86,7 @@ object ReadBookConfig {
     }
 
     fun upBg() {
-        val resources = App.INSTANCE.resources
+        val resources = context.resources
         val dm = resources.displayMetrics
         val width = dm.widthPixels
         val height = dm.heightPixels
@@ -134,29 +135,30 @@ object ReadBookConfig {
     }
 
     //配置写入读取
-    var autoReadSpeed = App.INSTANCE.getPrefInt(PreferKey.autoReadSpeed, 46)
+    var readBodyToLh = context.getPrefBoolean(PreferKey.readBodyToLh, true)
+    var autoReadSpeed = context.getPrefInt(PreferKey.autoReadSpeed, 46)
         set(value) {
             field = value
-            App.INSTANCE.putPrefInt(PreferKey.autoReadSpeed, value)
+            context.putPrefInt(PreferKey.autoReadSpeed, value)
         }
-    var styleSelect = App.INSTANCE.getPrefInt(PreferKey.readStyleSelect)
+    var styleSelect = context.getPrefInt(PreferKey.readStyleSelect)
         set(value) {
             field = value
-            if (App.INSTANCE.getPrefInt(PreferKey.readStyleSelect) != value) {
-                App.INSTANCE.putPrefInt(PreferKey.readStyleSelect, value)
+            if (context.getPrefInt(PreferKey.readStyleSelect) != value) {
+                context.putPrefInt(PreferKey.readStyleSelect, value)
             }
         }
-    var shareLayout = App.INSTANCE.getPrefBoolean(PreferKey.shareLayout)
+    var shareLayout = context.getPrefBoolean(PreferKey.shareLayout)
         set(value) {
             field = value
-            if (App.INSTANCE.getPrefBoolean(PreferKey.shareLayout) != value) {
-                App.INSTANCE.putPrefBoolean(PreferKey.shareLayout, value)
+            if (context.getPrefBoolean(PreferKey.shareLayout) != value) {
+                context.putPrefBoolean(PreferKey.shareLayout, value)
             }
         }
-    val textFullJustify get() = App.INSTANCE.getPrefBoolean(PreferKey.textFullJustify, true)
-    val textBottomJustify get() = App.INSTANCE.getPrefBoolean(PreferKey.textBottomJustify, true)
-    var hideStatusBar = App.INSTANCE.getPrefBoolean(PreferKey.hideStatusBar)
-    var hideNavigationBar = App.INSTANCE.getPrefBoolean(PreferKey.hideNavigationBar)
+    val textFullJustify get() = context.getPrefBoolean(PreferKey.textFullJustify, true)
+    val textBottomJustify get() = context.getPrefBoolean(PreferKey.textBottomJustify, true)
+    var hideStatusBar = context.getPrefBoolean(PreferKey.hideStatusBar)
+    var hideNavigationBar = context.getPrefBoolean(PreferKey.hideNavigationBar)
 
     val config get() = if (shareLayout) shareConfig else durConfig
 
@@ -489,7 +491,7 @@ object ReadBookConfig {
 
         fun curBgDrawable(width: Int, height: Int): Drawable {
             var bgDrawable: Drawable? = null
-            val resources = App.INSTANCE.resources
+            val resources = context.resources
             try {
                 bgDrawable = when (curBgType()) {
                     0 -> ColorDrawable(Color.parseColor(curBgStr()))
@@ -497,7 +499,7 @@ object ReadBookConfig {
                         BitmapDrawable(
                             resources,
                             BitmapUtils.decodeAssetsBitmap(
-                                App.INSTANCE,
+                                context,
                                 "bg" + File.separator + curBgStr(),
                                 width,
                                 height
@@ -512,7 +514,7 @@ object ReadBookConfig {
             } catch (e: Exception) {
                 e.printStackTrace()
             }
-            return bgDrawable ?: ColorDrawable(App.INSTANCE.getCompatColor(R.color.background))
+            return bgDrawable ?: ColorDrawable(context.getCompatColor(R.color.background))
         }
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/help/http/HttpHelper.kt b/app/src/main/java/io/legado/app/help/http/HttpHelper.kt
index a226b46d6..c6568f50e 100644
--- a/app/src/main/java/io/legado/app/help/http/HttpHelper.kt
+++ b/app/src/main/java/io/legado/app/help/http/HttpHelper.kt
@@ -1,6 +1,7 @@
 package io.legado.app.help.http
 
 import io.legado.app.constant.AppConst
+import io.legado.app.help.AppConfig
 import io.legado.app.help.http.api.HttpGetApi
 import io.legado.app.utils.NetworkUtils
 import kotlinx.coroutines.suspendCancellableCoroutine
@@ -41,7 +42,7 @@ object HttpHelper {
     fun simpleGet(url: String, encode: String? = null): String? {
         NetworkUtils.getBaseUrl(url)?.let { baseUrl ->
             val response = getApiService<HttpGetApi>(baseUrl, encode)
-                .get(url, mapOf(Pair(AppConst.UA_NAME, AppConst.userAgent)))
+                .get(url, mapOf(Pair(AppConst.UA_NAME, AppConfig.userAgent)))
                 .execute()
             return response.body()
         }
@@ -51,7 +52,7 @@ object HttpHelper {
     suspend fun simpleGetAsync(url: String, encode: String? = null): String? {
         NetworkUtils.getBaseUrl(url)?.let { baseUrl ->
             val response = getApiService<HttpGetApi>(baseUrl, encode)
-                .getAsync(url, mapOf(Pair(AppConst.UA_NAME, AppConst.userAgent)))
+                .getAsync(url, mapOf(Pair(AppConst.UA_NAME, AppConfig.userAgent)))
             return response.body()
         }
         return null
@@ -61,7 +62,7 @@ object HttpHelper {
         NetworkUtils.getBaseUrl(url)?.let { baseUrl ->
             return getByteRetrofit(baseUrl)
                 .create(HttpGetApi::class.java)
-                .getMapByteAsync(url, mapOf(), mapOf(Pair(AppConst.UA_NAME, AppConst.userAgent)))
+                .getMapByteAsync(url, mapOf(), mapOf(Pair(AppConst.UA_NAME, AppConfig.userAgent)))
                 .body()
         }
         return null
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 cd100503b..eab9671d6 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
@@ -13,7 +13,10 @@ import io.legado.app.R
 import io.legado.app.constant.EventBus
 import io.legado.app.constant.PreferKey
 import io.legado.app.data.entities.*
-import io.legado.app.help.*
+import io.legado.app.help.DefaultData
+import io.legado.app.help.LauncherIconHelp
+import io.legado.app.help.ReadBookConfig
+import io.legado.app.help.ThemeConfig
 import io.legado.app.service.help.ReadBook
 import io.legado.app.ui.book.read.page.provider.ChapterProvider
 import io.legado.app.utils.*
@@ -52,7 +55,6 @@ object Restore {
 
     //默认忽略keys
     private val ignorePrefKeys = arrayOf(
-        PreferKey.versionCode,
         PreferKey.defaultCover
     )
     private val readPrefKeys = arrayOf(
@@ -207,7 +209,6 @@ object Restore {
                     }
                 }
                 edit.apply()
-                AppConfig.upConfig()
             }
             ReadBookConfig.apply {
                 styleSelect = App.INSTANCE.getPrefInt(PreferKey.readStyleSelect)
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 16d9f3d29..aa4e7ec17 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
@@ -7,11 +7,11 @@ import com.bumptech.glide.load.model.GlideUrl
 import com.bumptech.glide.load.model.LazyHeaders
 import io.legado.app.constant.AppConst.SCRIPT_ENGINE
 import io.legado.app.constant.AppConst.UA_NAME
-import io.legado.app.constant.AppConst.userAgent
 import io.legado.app.constant.AppPattern.EXP_PATTERN
 import io.legado.app.constant.AppPattern.JS_PATTERN
 import io.legado.app.data.entities.BaseBook
 import io.legado.app.data.entities.BookChapter
+import io.legado.app.help.AppConfig
 import io.legado.app.help.JsExtensions
 import io.legado.app.help.http.*
 import io.legado.app.help.http.api.HttpGetApi
@@ -204,7 +204,7 @@ class AnalyzeUrl(
             }
         }
         headerMap[UA_NAME] ?: let {
-            headerMap[UA_NAME] = userAgent
+            headerMap[UA_NAME] = AppConfig.userAgent
         }
         when (method) {
             RequestMethod.GET -> {
diff --git a/app/src/main/java/io/legado/app/ui/book/cache/CacheViewModel.kt b/app/src/main/java/io/legado/app/ui/book/cache/CacheViewModel.kt
index be988fe08..86e57fb68 100644
--- a/app/src/main/java/io/legado/app/ui/book/cache/CacheViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/cache/CacheViewModel.kt
@@ -94,6 +94,7 @@ class CacheViewModel(application: Application) : BaseViewModel(application) {
             BookHelp.getContent(book, chapter).let { content ->
                 val content1 = content?.let {
                     contentProcessor.getContent(book, chapter.title, it, false)
+                        .joinToString("\n")
                 }
                 stringBuilder.append("\n\n")
                     .append(chapter.title)
diff --git a/app/src/main/java/io/legado/app/ui/book/read/ReadBookBaseActivity.kt b/app/src/main/java/io/legado/app/ui/book/read/ReadBookBaseActivity.kt
index dbfdc8807..1e68e29ff 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/ReadBookBaseActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/ReadBookBaseActivity.kt
@@ -21,7 +21,8 @@ import io.legado.app.help.AppConfig
 import io.legado.app.help.LocalConfig
 import io.legado.app.help.ReadBookConfig
 import io.legado.app.help.coroutine.Coroutine
-import io.legado.app.lib.dialogs.*
+import io.legado.app.lib.dialogs.alert
+import io.legado.app.lib.dialogs.selector
 import io.legado.app.lib.theme.ATH
 import io.legado.app.lib.theme.ThemeStore
 import io.legado.app.lib.theme.backgroundColor
@@ -208,7 +209,7 @@ abstract class ReadBookBaseActivity :
      * 适配刘海
      */
     private fun upLayoutInDisplayCutoutMode() {
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P && AppConfig.readBodyToLh) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P && ReadBookConfig.readBodyToLh) {
             window.attributes = window.attributes.apply {
                 layoutInDisplayCutoutMode =
                     WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES
diff --git a/app/src/main/java/io/legado/app/ui/book/read/config/ClickActionConfigDialog.kt b/app/src/main/java/io/legado/app/ui/book/read/config/ClickActionConfigDialog.kt
index 55082400e..30608a1f8 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/config/ClickActionConfigDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/config/ClickActionConfigDialog.kt
@@ -56,14 +56,14 @@ class ClickActionConfigDialog : BaseDialogFragment() {
     }
 
     private fun initData() = with(AppConfig) {
-        tv_top_left.text = actions[clickActionTopLeft]
-        tv_top_center.text = actions[clickActionTopCenter]
-        tv_top_right.text = actions[clickActionTopRight]
-        tv_middle_left.text = actions[clickActionMiddleLeft]
-        tv_middle_right.text = actions[clickActionMiddleRight]
-        tv_bottom_left.text = actions[clickActionBottomLeft]
-        tv_bottom_center.text = actions[clickActionBottomCenter]
-        tv_bottom_right.text = actions[clickActionBottomRight]
+        tv_top_left.text = actions[clickActionTL]
+        tv_top_center.text = actions[clickActionTC]
+        tv_top_right.text = actions[clickActionTR]
+        tv_middle_left.text = actions[clickActionML]
+        tv_middle_right.text = actions[clickActionMR]
+        tv_bottom_left.text = actions[clickActionBL]
+        tv_bottom_center.text = actions[clickActionBC]
+        tv_bottom_right.text = actions[clickActionBR]
     }
 
     private fun initViewEvent() {
@@ -72,49 +72,49 @@ class ClickActionConfigDialog : BaseDialogFragment() {
         }
         tv_top_left.onClick {
             selectAction { action ->
-                putPrefInt(PreferKey.clickActionTopLeft, action)
+                putPrefInt(PreferKey.clickActionTL, action)
                 (it as? TextView)?.text = actions[action]
             }
         }
         tv_top_center.onClick {
             selectAction { action ->
-                putPrefInt(PreferKey.clickActionTopCenter, action)
+                putPrefInt(PreferKey.clickActionTC, action)
                 (it as? TextView)?.text = actions[action]
             }
         }
         tv_top_right.onClick {
             selectAction { action ->
-                putPrefInt(PreferKey.clickActionTopRight, action)
+                putPrefInt(PreferKey.clickActionTR, action)
                 (it as? TextView)?.text = actions[action]
             }
         }
         tv_middle_left.onClick {
             selectAction { action ->
-                putPrefInt(PreferKey.clickActionMiddleLeft, action)
+                putPrefInt(PreferKey.clickActionML, action)
                 (it as? TextView)?.text = actions[action]
             }
         }
         tv_middle_right.onClick {
             selectAction { action ->
-                putPrefInt(PreferKey.clickActionMiddleRight, action)
+                putPrefInt(PreferKey.clickActionMR, action)
                 (it as? TextView)?.text = actions[action]
             }
         }
         tv_bottom_left.onClick {
             selectAction { action ->
-                putPrefInt(PreferKey.clickActionBottomLeft, action)
+                putPrefInt(PreferKey.clickActionBL, action)
                 (it as? TextView)?.text = actions[action]
             }
         }
         tv_bottom_center.onClick {
             selectAction { action ->
-                putPrefInt(PreferKey.clickActionBottomCenter, action)
+                putPrefInt(PreferKey.clickActionBC, action)
                 (it as? TextView)?.text = actions[action]
             }
         }
         tv_bottom_right.onClick {
             selectAction { action ->
-                putPrefInt(PreferKey.clickActionBottomRight, action)
+                putPrefInt(PreferKey.clickActionBR, action)
                 (it as? TextView)?.text = actions[action]
             }
         }
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 0fb334989..4bd777ab8 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
@@ -261,31 +261,31 @@ class PageView(context: Context, attrs: AttributeSet) :
         when {
             isTextSelected -> isTextSelected = false
             mcRect.contains(startX, startY) -> if (!isAbortAnim) {
-                click(AppConfig.clickActionMiddleCenter)
+                click(AppConfig.clickActionMC)
             }
             bcRect.contains(startX, startY) -> {
-                click(AppConfig.clickActionBottomCenter)
+                click(AppConfig.clickActionBC)
             }
             blRect.contains(startX, startY) -> {
-                click(AppConfig.clickActionBottomLeft)
+                click(AppConfig.clickActionBL)
             }
             brRect.contains(startX, startY) -> {
-                click(AppConfig.clickActionBottomRight)
+                click(AppConfig.clickActionBR)
             }
             mlRect.contains(startX, startY) -> {
-                click(AppConfig.clickActionMiddleLeft)
+                click(AppConfig.clickActionML)
             }
             mrRect.contains(startX, startY) -> {
-                click(AppConfig.clickActionMiddleRight)
+                click(AppConfig.clickActionMR)
             }
             tlRect.contains(startX, startY) -> {
-                click(AppConfig.clickActionTopLeft)
+                click(AppConfig.clickActionTL)
             }
             tcRect.contains(startX, startY) -> {
-                click(AppConfig.clickActionTopCenter)
+                click(AppConfig.clickActionTC)
             }
             trRect.contains(startX, startY) -> {
-                click(AppConfig.clickActionTopRight)
+                click(AppConfig.clickActionTR)
             }
         }
     }
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 5b3ab31f5..eba591739 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
@@ -1,5 +1,6 @@
 package io.legado.app.ui.config
 
+import android.annotation.SuppressLint
 import android.app.Activity.RESULT_OK
 import android.content.ComponentName
 import android.content.Intent
@@ -29,7 +30,9 @@ import io.legado.app.service.WebService
 import io.legado.app.ui.main.MainActivity
 import io.legado.app.ui.widget.image.CoverImageView
 import io.legado.app.ui.widget.number.NumberPickerDialog
+import io.legado.app.ui.widget.text.AutoCompleteTextView
 import io.legado.app.utils.*
+import kotlinx.android.synthetic.main.dialog_edit_text.view.*
 import java.io.File
 
 
@@ -48,6 +51,7 @@ class OtherConfigFragment : BasePreferenceFragment(),
     override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
         putPrefBoolean(PreferKey.processText, isProcessTextEnabled())
         addPreferencesFromResource(R.xml.pref_config_other)
+        upPreferenceSummary(PreferKey.userAgent, AppConfig.userAgent)
         upPreferenceSummary(PreferKey.threadCount, AppConfig.threadCount.toString())
         upPreferenceSummary(PreferKey.webPort, webPort.toString())
         upPreferenceSummary(PreferKey.defaultCover, getPrefString(PreferKey.defaultCover))
@@ -66,6 +70,7 @@ class OtherConfigFragment : BasePreferenceFragment(),
 
     override fun onPreferenceTreeClick(preference: Preference?): Boolean {
         when (preference?.key) {
+            PreferKey.userAgent -> showUserAgentDialog()
             PreferKey.threadCount -> NumberPickerDialog(requireContext())
                 .setTitle(getString(R.string.threads_num_title))
                 .setMaxValue(999)
@@ -117,10 +122,8 @@ class OtherConfigFragment : BasePreferenceFragment(),
             }
             PreferKey.showRss -> postEvent(EventBus.SHOW_RSS, "")
             PreferKey.defaultCover -> upPreferenceSummary(
-                key,
-                getPrefString(PreferKey.defaultCover)
+                key, getPrefString(PreferKey.defaultCover)
             )
-            PreferKey.replaceEnableDefault -> AppConfig.upReplaceEnableDefault()
             PreferKey.language -> listView.postDelayed({
                 LanguageUtils.setConfiguration(App.INSTANCE)
                 val intent = Intent(App.INSTANCE, MainActivity::class.java)
@@ -128,6 +131,9 @@ class OtherConfigFragment : BasePreferenceFragment(),
                 App.INSTANCE.startActivity(intent)
                 Process.killProcess(Process.myPid())
             }, 1000)
+            PreferKey.userAgent -> listView.post {
+                upPreferenceSummary(PreferKey.userAgent, AppConfig.userAgent)
+            }
         }
     }
 
@@ -146,6 +152,28 @@ class OtherConfigFragment : BasePreferenceFragment(),
         }
     }
 
+    @SuppressLint("InflateParams")
+    private fun showUserAgentDialog() {
+        alert("UserAgent") {
+            var editText: AutoCompleteTextView? = null
+            customView {
+                layoutInflater.inflate(R.layout.dialog_edit_text, null).apply {
+                    edit_view.setText(AppConfig.userAgent)
+                    editText = edit_view
+                }
+            }
+            okButton {
+                val userAgent = editText?.text?.toString()
+                if (userAgent.isNullOrBlank()) {
+                    removePref(PreferKey.userAgent)
+                } else {
+                    putPrefString(PreferKey.userAgent, userAgent)
+                }
+            }
+            noButton()
+        }.show()
+    }
+
     private fun clearCache() {
         requireContext().alert(
             titleResource = R.string.clear_cache,
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 045ddee39..3c85d33fc 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
@@ -12,6 +12,7 @@ import androidx.preference.Preference
 import io.legado.app.App
 import io.legado.app.R
 import io.legado.app.base.BasePreferenceFragment
+import io.legado.app.constant.AppConst
 import io.legado.app.constant.EventBus
 import io.legado.app.constant.PreferKey
 import io.legado.app.help.AppConfig
@@ -158,7 +159,7 @@ class ThemeConfigFragment : BasePreferenceFragment(),
                 .setMinValue(0)
                 .setValue(AppConfig.elevation)
                 .setCustomButton((R.string.btn_default_s)) {
-                    AppConfig.elevation = AppConfig.sysElevation
+                    AppConfig.elevation = AppConst.sysElevation
                     recreateActivities()
                 }
                 .show {
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 66970d7cc..028506550 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
@@ -27,7 +27,9 @@ import io.legado.app.ui.main.explore.ExploreFragment
 import io.legado.app.ui.main.my.MyFragment
 import io.legado.app.ui.main.rss.RssFragment
 import io.legado.app.ui.widget.dialog.TextDialog
-import io.legado.app.utils.*
+import io.legado.app.utils.getViewModel
+import io.legado.app.utils.hideSoftInput
+import io.legado.app.utils.observeEvent
 import kotlinx.android.synthetic.main.activity_main.*
 import org.jetbrains.anko.toast
 
@@ -101,8 +103,8 @@ class MainActivity : VMBaseActivity<MainViewModel>(R.layout.activity_main),
     }
 
     private fun upVersion() {
-        if (getPrefInt(PreferKey.versionCode) != App.versionCode) {
-            putPrefInt(PreferKey.versionCode, App.versionCode)
+        if (LocalConfig.versionCode != App.versionCode) {
+            LocalConfig.versionCode = App.versionCode
             if (LocalConfig.isFirstOpenApp) {
                 val text = String(assets.open("help/appHelp.md").readBytes())
                 TextDialog.show(supportFragmentManager, text, TextDialog.MD)
diff --git a/app/src/main/java/io/legado/app/ui/qrcode/QrCodeActivity.kt b/app/src/main/java/io/legado/app/ui/qrcode/QrCodeActivity.kt
index 6ea1d85bd..a5f6170fa 100644
--- a/app/src/main/java/io/legado/app/ui/qrcode/QrCodeActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/qrcode/QrCodeActivity.kt
@@ -64,17 +64,20 @@ class QrCodeActivity : BaseActivity(R.layout.activity_qrcode_capture), QRCodeVie
             .rationale(R.string.qr_per)
             .onGranted {
                 zxingview.visibility = View.VISIBLE
-                zxingview.startSpotAndShowRect() // 显示扫描框，并开始识别
+                //TODO 显示扫描框，并开始识别
+                zxingview.startSpotAndShowRect()
             }.request()
     }
 
     override fun onStop() {
-        zxingview.stopCamera() // 关闭摄像头预览，并且隐藏扫描框
+        //TODO 关闭摄像头预览，并且隐藏扫描框
+        zxingview.stopCamera()
         super.onStop()
     }
 
     override fun onDestroy() {
-        zxingview.onDestroy() // 销毁二维码扫描控件
+        //TODO 销毁二维码扫描控件
+        zxingview.onDestroy()
         super.onDestroy()
     }
 
@@ -96,7 +99,8 @@ class QrCodeActivity : BaseActivity(R.layout.activity_qrcode_capture), QRCodeVie
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
         super.onActivityResult(requestCode, resultCode, data)
         data?.data?.let {
-            zxingview.startSpotAndShowRect() // 显示扫描框，并开始识别
+            //TODO 显示扫描框，并开始识别
+            zxingview.startSpotAndShowRect()
 
             if (resultCode == Activity.RESULT_OK && requestCode == requestQrImage) {
                 // 本来就用到 QRCodeView 时可直接调 QRCodeView 的方法，走通用的回调
diff --git a/app/src/main/java/io/legado/app/ui/replace/edit/ReplaceEditActivity.kt b/app/src/main/java/io/legado/app/ui/replace/edit/ReplaceEditActivity.kt
index ee07a9244..4faaa8f35 100644
--- a/app/src/main/java/io/legado/app/ui/replace/edit/ReplaceEditActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/replace/edit/ReplaceEditActivity.kt
@@ -117,11 +117,13 @@ class ReplaceEditActivity :
         if (view is EditText) {
             val start = view.selectionStart
             val end = view.selectionEnd
-            val edit = view.editableText//获取EditText的文字
+            //TODO 获取EditText的文字
+            val edit = view.editableText
             if (start < 0 || start >= edit.length) {
                 edit.append(text)
             } else {
-                edit.replace(start, end, text)//光标所在位置插入文字
+                //TODO 光标所在位置插入文字
+                edit.replace(start, end, text)
             }
         }
     }
diff --git a/app/src/main/java/io/legado/app/utils/NetworkUtils.kt b/app/src/main/java/io/legado/app/utils/NetworkUtils.kt
index d08e4a450..d5464c6aa 100644
--- a/app/src/main/java/io/legado/app/utils/NetworkUtils.kt
+++ b/app/src/main/java/io/legado/app/utils/NetworkUtils.kt
@@ -80,7 +80,7 @@ object NetworkUtils {
     fun getAbsoluteURL(baseURL: String?, relativePath: String?): String? {
         if (baseURL.isNullOrEmpty()) return relativePath
         if (relativePath.isNullOrEmpty()) return baseURL
-        if (relativePath.isAbsUrl()) return baseURL
+        if (relativePath.isAbsUrl()) return relativePath
         var relativeUrl = relativePath
         try {
             val absoluteUrl = URL(baseURL.substringBefore(","))
diff --git a/app/src/main/res/values/pref_key_value.xml b/app/src/main/res/values/pref_key_value.xml
index a0247482b..266c4cb51 100644
--- a/app/src/main/res/values/pref_key_value.xml
+++ b/app/src/main/res/values/pref_key_value.xml
@@ -2,15 +2,8 @@
 <resources>
     <string name="pk_auto_refresh" translatable="false">auto_refresh</string>
     <string name="pk_requested_direction" translatable="false">list_screen_direction</string>
-    <string name="pk_full_screen" translatable="false">full_screen</string>
-    <string name="pk_threads_num" translatable="false">threads_num</string>
-    <string name="pk_user_agent" translatable="false">user_agent</string>
     <string name="pk_bookshelf_px" translatable="false">bookshelf_px</string>
-    <string name="pk_read_type" translatable="false">read_type</string>
-    <string name="pk_find_expand_group" translatable="false">expandGroupFind</string>
     <string name="pk_default_read" translatable="false">defaultToRead</string>
-    <string name="pk_auto_download" translatable="false">autoDownload</string>
-    <string name="pk_check_update" translatable="false">checkUpdate</string>
     <string name="legado_gzh" translatable="false">开源阅读</string>
 
     <string name="source_rule_url" translatable="false">https://alanskycn.gitee.io/teachme/</string>
diff --git a/app/src/main/res/xml/pref_config_other.xml b/app/src/main/res/xml/pref_config_other.xml
index 1a1541988..7077d665b 100644
--- a/app/src/main/res/xml/pref_config_other.xml
+++ b/app/src/main/res/xml/pref_config_other.xml
@@ -51,6 +51,10 @@
         app:iconSpaceReserved="false"
         app:layout="@layout/view_preference_category">
 
+        <io.legado.app.ui.widget.prefs.Preference
+            android:key="userAgent"
+            android:title="UserAgent" />
+
         <io.legado.app.ui.widget.prefs.SwitchPreference
             android:defaultValue="true"
             android:key="replaceEnableDefault"