diff --git a/app/src/main/assets/defaultData/txtTocRule.json b/app/src/main/assets/defaultData/txtTocRule.json
index 58e9e8644..57cb4bfdb 100644
--- a/app/src/main/assets/defaultData/txtTocRule.json
+++ b/app/src/main/assets/defaultData/txtTocRule.json
@@ -24,7 +24,7 @@
         "id": -4,
         "enable": false,
         "name": "目录(古典、轻小说备用)",
-        "rule": "^[ 　\\t]{0,4}(?:序章|楔子|正文(?!完|结)|终章|后记|尾声|番外|第?\\s{0,4}[\\d零一二两三四五六七八九十百千万壹贰叁肆伍陆柒捌玖拾佰仟]+?\\s{0,4}(?:章|节(?!课)|卷|集(?![合和])|部(?![分赛游])|回(?![合来事去])|场(?![和合比电是])|篇(?!张))).{0,30}$",
+        "rule": "^[ 　\\t]{0,4}(?:序章|楔子|正文(?!完|结)|终章|后记|尾声|番外|第?\\s{0,4}[\\d零一二两三四五六七八九十百千万壹贰叁肆伍陆柒捌玖拾佰仟]+?\\s{0,4}(?:章|节(?!课)|卷|集(?![合和])|部(?![分赛游])|回(?![合来事去])|场(?![和合比电是])|话|篇(?!张))).{0,30}$",
         "serialNumber": 3
     },
     {
@@ -125,4 +125,4 @@
         "rule": "^.{1,20}[(（][\\d零一二两三四五六七八九十百千万壹贰叁肆伍陆柒捌玖拾佰仟]{1,8}[)）][ 　\t]{0,4}$",
         "serialNumber": 17
     }
-]
+]
\ No newline at end of file
diff --git a/app/src/main/assets/updateLog.md b/app/src/main/assets/updateLog.md
index 5ad10ab4f..011689a1b 100644
--- a/app/src/main/assets/updateLog.md
+++ b/app/src/main/assets/updateLog.md
@@ -3,8 +3,15 @@
 * 关注合作公众号 **[小说拾遗]()** 获取好看的小说。
 * 旧版数据导入教程：先在旧版阅读(2.x)中进行备份，然后在新版阅读(3.x)【我的】->【备份与恢复】，选择【导入旧版本数据】。
 
-**2020/10/20**
+**2020/10/23**
+* 修复选择错误的bug
+* 修复长图最后一张不能滚动的bug
+* js添加java.getCookie(sourceUrl)来获取登录后的cookie by [AndyBernie](https://github.com/AndyBernie)
+* 修复简繁转换没有处理标题
+
+**2020/10/21**
 * 默认分组无书籍时自动隐藏
+* 自定义翻页按键支持多个按键
 
 **2020/10/19**
 * 优化分组管理
diff --git a/app/src/main/java/io/legado/app/App.kt b/app/src/main/java/io/legado/app/App.kt
index 64f037fa4..02dd32dae 100644
--- a/app/src/main/java/io/legado/app/App.kt
+++ b/app/src/main/java/io/legado/app/App.kt
@@ -4,10 +4,8 @@ import android.app.NotificationChannel
 import android.app.NotificationManager
 import android.content.Context
 import android.content.res.Configuration
-import android.graphics.Color
 import android.os.Build
 import android.provider.Settings
-import android.util.Log
 import androidx.annotation.RequiresApi
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.multidex.MultiDexApplication
@@ -16,14 +14,10 @@ import io.legado.app.constant.AppConst.channelIdDownload
 import io.legado.app.constant.AppConst.channelIdReadAloud
 import io.legado.app.constant.AppConst.channelIdWeb
 import io.legado.app.constant.EventBus
-import io.legado.app.constant.PreferKey
 import io.legado.app.data.AppDatabase
-import io.legado.app.help.ActivityHelp
-import io.legado.app.help.AppConfig
-import io.legado.app.help.CrashHandler
-import io.legado.app.help.ReadBookConfig
-import io.legado.app.lib.theme.ThemeStore
-import io.legado.app.utils.*
+import io.legado.app.help.*
+import io.legado.app.utils.LanguageUtils
+import io.legado.app.utils.postEvent
 
 @Suppress("DEPRECATION")
 class App : MultiDexApplication() {
@@ -72,68 +66,9 @@ class App : MultiDexApplication() {
         }
     }
 
-    /**
-     * 更新主题
-     */
-    fun applyTheme() {
-        when {
-            AppConfig.isEInkMode -> {
-                ThemeStore.editTheme(this)
-                    .coloredNavigationBar(true)
-                    .primaryColor(Color.WHITE)
-                    .accentColor(Color.BLACK)
-                    .backgroundColor(Color.WHITE)
-                    .bottomBackground(Color.WHITE)
-                    .apply()
-            }
-            AppConfig.isNightTheme -> {
-                val primary =
-                    getPrefInt(PreferKey.cNPrimary, getCompatColor(R.color.md_blue_grey_600))
-                val accent =
-                    getPrefInt(PreferKey.cNAccent, getCompatColor(R.color.md_deep_orange_800))
-                var background =
-                    getPrefInt(PreferKey.cNBackground, getCompatColor(R.color.md_grey_900))
-                if (ColorUtils.isColorLight(background)) {
-                    background = getCompatColor(R.color.md_grey_900)
-                    putPrefInt(PreferKey.cNBackground, background)
-                }
-                val bBackground =
-                    getPrefInt(PreferKey.cNBBackground, getCompatColor(R.color.md_grey_850))
-                ThemeStore.editTheme(this)
-                    .coloredNavigationBar(true)
-                    .primaryColor(ColorUtils.withAlpha(primary, 1f))
-                    .accentColor(ColorUtils.withAlpha(accent, 1f))
-                    .backgroundColor(ColorUtils.withAlpha(background, 1f))
-                    .bottomBackground(ColorUtils.withAlpha(bBackground, 1f))
-                    .apply()
-            }
-            else -> {
-                val primary =
-                    getPrefInt(PreferKey.cPrimary, getCompatColor(R.color.md_brown_500))
-                val accent =
-                    getPrefInt(PreferKey.cAccent, getCompatColor(R.color.md_red_600))
-                var background =
-                    getPrefInt(PreferKey.cBackground, getCompatColor(R.color.md_grey_100))
-                if (!ColorUtils.isColorLight(background)) {
-                    background = getCompatColor(R.color.md_grey_100)
-                    putPrefInt(PreferKey.cBackground, background)
-                }
-                val bBackground =
-                    getPrefInt(PreferKey.cBBackground, getCompatColor(R.color.md_grey_200))
-                ThemeStore.editTheme(this)
-                    .coloredNavigationBar(true)
-                    .primaryColor(ColorUtils.withAlpha(primary, 1f))
-                    .accentColor(ColorUtils.withAlpha(accent, 1f))
-                    .backgroundColor(ColorUtils.withAlpha(background, 1f))
-                    .bottomBackground(ColorUtils.withAlpha(bBackground, 1f))
-                    .apply()
-            }
-        }
-    }
-
     fun applyDayNight() {
         ReadBookConfig.upBg()
-        applyTheme()
+        ThemeConfig.applyTheme(this)
         initNightMode()
         postEvent(EventBus.RECREATE, "")
     }
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 0dbd518af..b55f35d57 100644
--- a/app/src/main/java/io/legado/app/constant/PreferKey.kt
+++ b/app/src/main/java/io/legado/app/constant/PreferKey.kt
@@ -12,8 +12,8 @@ object PreferKey {
     const val speakEngine = "speakEngine"
     const val readAloudByPage = "readAloudByPage"
     const val ttsSpeechRate = "ttsSpeechRate"
-    const val prevKey = "prevKeyCode"
-    const val nextKey = "nextKeyCode"
+    const val prevKeys = "prevKeyCodes"
+    const val nextKeys = "nextKeyCodes"
     const val showRss = "showRss"
     const val bookshelfLayout = "bookshelfLayout"
     const val bookshelfSort = "bookshelfSort"
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 537737c3f..18222d870 100644
--- a/app/src/main/java/io/legado/app/help/BookHelp.kt
+++ b/app/src/main/java/io/legado/app/help/BookHelp.kt
@@ -101,7 +101,7 @@ object BookHelp {
         downloadImages.add(src)
         val analyzeUrl = AnalyzeUrl(src)
         try {
-            analyzeUrl.getImageBytes(book.origin)?.let {
+            analyzeUrl.getResponseBytes(book.origin)?.let {
                 FileUtils.createFileIfNotExist(
                     downloadDir,
                     cacheFolderName,
@@ -324,7 +324,8 @@ object BookHelp {
         content: String,
         enableReplace: Boolean,
     ): List<String> {
-        var c = content
+        var title1 = title
+        var content1 = content
         if (enableReplace) {
             synchronized(this) {
                 if (bookName != name || bookOrigin != origin) {
@@ -341,10 +342,10 @@ object BookHelp {
                 item.pattern.let {
                     if (it.isNotEmpty()) {
                         try {
-                            c = if (item.isRegex) {
-                                c.replace(it.toRegex(), item.replacement)
+                            content1 = if (item.isRegex) {
+                                content1.replace(it.toRegex(), item.replacement)
                             } else {
-                                c.replace(it, item.replacement)
+                                content1.replace(it, item.replacement)
                             }
                         } catch (e: Exception) {
                             withContext(Main) {
@@ -357,8 +358,14 @@ object BookHelp {
         }
         try {
             when (AppConfig.chineseConverterType) {
-                1 -> c = HanLP.convertToSimplifiedChinese(c)
-                2 -> c = HanLP.convertToTraditionalChinese(c)
+                1 -> {
+                    title1 = HanLP.convertToSimplifiedChinese(title1)
+                    content1 = HanLP.convertToSimplifiedChinese(content1)
+                }
+                2 -> {
+                    title1 = HanLP.convertToTraditionalChinese(title1)
+                    content1 = HanLP.convertToTraditionalChinese(content1)
+                }
             }
         } catch (e: Exception) {
             withContext(Main) {
@@ -366,11 +373,11 @@ object BookHelp {
             }
         }
         val contents = arrayListOf<String>()
-        c.split("\n").forEach {
+        content1.split("\n").forEach {
             val str = it.replace("^[\\n\\s\\r]+".toRegex(), "")
             if (contents.isEmpty()) {
-                contents.add(title)
-                if (str != title && str.isNotEmpty()) {
+                contents.add(title1)
+                if (str != title1 && str.isNotEmpty()) {
                     contents.add("${ReadBookConfig.paragraphIndent}$str")
                 }
             } else if (str.isNotEmpty()) {
diff --git a/app/src/main/java/io/legado/app/help/JsExtensions.kt b/app/src/main/java/io/legado/app/help/JsExtensions.kt
index 7ba245bcd..ff7357ad4 100644
--- a/app/src/main/java/io/legado/app/help/JsExtensions.kt
+++ b/app/src/main/java/io/legado/app/help/JsExtensions.kt
@@ -4,6 +4,7 @@ import android.util.Base64
 import androidx.annotation.Keep
 import io.legado.app.constant.AppConst.dateFormat
 import io.legado.app.help.http.SSLHelper
+import io.legado.app.help.http.CookieStore
 import io.legado.app.model.analyzeRule.AnalyzeUrl
 import io.legado.app.utils.*
 import org.jsoup.Connection
@@ -119,6 +120,13 @@ interface JsExtensions {
             .execute()
     }
 
+     /**
+      *js实现读取cookie
+      */
+     fun getCookie(tag: String): String {
+        return CookieStore.getCookie(tag)
+     }
+
     /**
      * js实现解码,不能删
      */
diff --git a/app/src/main/java/io/legado/app/help/ThemeConfig.kt b/app/src/main/java/io/legado/app/help/ThemeConfig.kt
index 44948e17c..4f92a039a 100644
--- a/app/src/main/java/io/legado/app/help/ThemeConfig.kt
+++ b/app/src/main/java/io/legado/app/help/ThemeConfig.kt
@@ -7,6 +7,7 @@ import io.legado.app.App
 import io.legado.app.R
 import io.legado.app.constant.EventBus
 import io.legado.app.constant.PreferKey
+import io.legado.app.lib.theme.ThemeStore
 import io.legado.app.utils.*
 import java.io.File
 
@@ -14,16 +15,16 @@ object ThemeConfig {
     const val configFileName = "themeConfig.json"
     val configFilePath = FileUtils.getPath(App.INSTANCE.filesDir, configFileName)
 
-    val configList = arrayListOf<Config>()
-
-    init {
-        upConfig()
+    val configList: ArrayList<Config> by lazy {
+        val cList = getConfigs() ?: DefaultData.defaultThemeConfigs
+        ArrayList(cList)
     }
 
     fun upConfig() {
-        (getConfigs() ?: DefaultData.defaultThemeConfigs).let {
-            configList.clear()
-            configList.addAll(it)
+        getConfigs()?.let {
+            it.forEach { config ->
+                addConfig(config)
+            }
         }
     }
 
@@ -137,6 +138,65 @@ object ThemeConfig {
         addConfig(config)
     }
 
+    /**
+     * 更新主题
+     */
+    fun applyTheme(context: Context) = with(context) {
+        when {
+            AppConfig.isEInkMode -> {
+                ThemeStore.editTheme(this)
+                    .coloredNavigationBar(true)
+                    .primaryColor(Color.WHITE)
+                    .accentColor(Color.BLACK)
+                    .backgroundColor(Color.WHITE)
+                    .bottomBackground(Color.WHITE)
+                    .apply()
+            }
+            AppConfig.isNightTheme -> {
+                val primary =
+                    getPrefInt(PreferKey.cNPrimary, getCompatColor(R.color.md_blue_grey_600))
+                val accent =
+                    getPrefInt(PreferKey.cNAccent, getCompatColor(R.color.md_deep_orange_800))
+                var background =
+                    getPrefInt(PreferKey.cNBackground, getCompatColor(R.color.md_grey_900))
+                if (ColorUtils.isColorLight(background)) {
+                    background = getCompatColor(R.color.md_grey_900)
+                    putPrefInt(PreferKey.cNBackground, background)
+                }
+                val bBackground =
+                    getPrefInt(PreferKey.cNBBackground, getCompatColor(R.color.md_grey_850))
+                ThemeStore.editTheme(this)
+                    .coloredNavigationBar(true)
+                    .primaryColor(ColorUtils.withAlpha(primary, 1f))
+                    .accentColor(ColorUtils.withAlpha(accent, 1f))
+                    .backgroundColor(ColorUtils.withAlpha(background, 1f))
+                    .bottomBackground(ColorUtils.withAlpha(bBackground, 1f))
+                    .apply()
+            }
+            else -> {
+                val primary =
+                    getPrefInt(PreferKey.cPrimary, getCompatColor(R.color.md_brown_500))
+                val accent =
+                    getPrefInt(PreferKey.cAccent, getCompatColor(R.color.md_red_600))
+                var background =
+                    getPrefInt(PreferKey.cBackground, getCompatColor(R.color.md_grey_100))
+                if (!ColorUtils.isColorLight(background)) {
+                    background = getCompatColor(R.color.md_grey_100)
+                    putPrefInt(PreferKey.cBackground, background)
+                }
+                val bBackground =
+                    getPrefInt(PreferKey.cBBackground, getCompatColor(R.color.md_grey_200))
+                ThemeStore.editTheme(this)
+                    .coloredNavigationBar(true)
+                    .primaryColor(ColorUtils.withAlpha(primary, 1f))
+                    .accentColor(ColorUtils.withAlpha(accent, 1f))
+                    .backgroundColor(ColorUtils.withAlpha(background, 1f))
+                    .bottomBackground(ColorUtils.withAlpha(bBackground, 1f))
+                    .apply()
+            }
+        }
+    }
+
     @Keep
     class Config(
         var themeName: String,
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 3728f4819..a226b46d6 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
@@ -48,21 +48,6 @@ object HttpHelper {
         return null
     }
 
-    fun getBytes(
-        url: String,
-        queryMap: Map<String, String>,
-        headers: Map<String, String>
-    ): ByteArray? {
-        NetworkUtils.getBaseUrl(url)?.let { baseUrl ->
-            return getByteRetrofit(baseUrl)
-                .create(HttpGetApi::class.java)
-                .getMapByte(url, queryMap, headers)
-                .execute()
-                .body()
-        }
-        return null
-    }
-
     suspend fun simpleGetAsync(url: String, encode: String? = null): String? {
         NetworkUtils.getBaseUrl(url)?.let { baseUrl ->
             val response = getApiService<HttpGetApi>(baseUrl, encode)
diff --git a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeRule.kt b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeRule.kt
index 8fb5e2c0f..11dcbab2c 100644
--- a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeRule.kt
+++ b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeRule.kt
@@ -649,16 +649,12 @@ class AnalyzeRule(var book: BaseBook? = null) : JsExtensions {
      * 章节数转数字
      */
     fun toNumChapter(s: String?): String? {
-        if (s == null) {
-            return null
-        }
-        val pattern = Pattern.compile("(第)(.+?)(章)")
-        val matcher = pattern.matcher(s)
-        return if (matcher.find()) {
-            matcher.group(1)!! + StringUtils.stringToInt(matcher.group(2)) + matcher.group(3)
-        } else {
-            s
+        s ?: return null
+        val matcher = titleNumPattern.matcher(s)
+        if (matcher.find()) {
+            return "${matcher.group(1)}${StringUtils.stringToInt(matcher.group(2))}${matcher.group(3)}"
         }
+        return s
     }
 
     companion object {
@@ -667,6 +663,7 @@ class AnalyzeRule(var book: BaseBook? = null) : JsExtensions {
         private val evalPattern =
             Pattern.compile("@get:\\{[^}]+?\\}|\\{\\{[\\w\\W]*?\\}\\}", Pattern.CASE_INSENSITIVE)
         private val regexPattern = Pattern.compile("\\$\\d{1,2}")
+        private val titleNumPattern = Pattern.compile("(第)(.+?)(章)")
     }
 
 }
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 3680e5322..160c0debf 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
@@ -188,9 +188,9 @@ class AnalyzeUrl(
                         GSON.fromJsonObject<Map<String, String>>(headers)
                             ?.let { headerMap.putAll(it) }
                     }
-                    headerMap[UA_NAME] ?: let {
-                        headerMap[UA_NAME] = userAgent
-                    }
+                }
+                headerMap[UA_NAME] ?: let {
+                    headerMap[UA_NAME] = userAgent
                 }
                 option.charset?.let { charset = it }
                 option.body?.let {
@@ -281,7 +281,7 @@ class AnalyzeUrl(
     fun getResponse(tag: String): Call<String> {
         val cookie = CookieStore.getCookie(tag)
         if (cookie.isNotEmpty()) {
-            headerMap["Cookie"] = cookie
+            headerMap["Cookie"] += ";${cookie}"
         }
         return when {
             method == RequestMethod.POST -> {
@@ -324,7 +324,7 @@ class AnalyzeUrl(
         }
         val cookie = CookieStore.getCookie(tag)
         if (cookie.isNotEmpty()) {
-            headerMap["Cookie"] = cookie
+            headerMap["Cookie"] += ";${cookie}"
         }
         val res = when {
             method == RequestMethod.POST -> {
@@ -352,23 +352,11 @@ class AnalyzeUrl(
         return Res(NetworkUtils.getUrl(res), res.body())
     }
 
-    fun getImageBytes(tag: String): ByteArray? {
-        val cookie = CookieStore.getCookie(tag)
-        if (cookie.isNotEmpty()) {
-            headerMap["Cookie"] += cookie
-        }
-        return if (fieldMap.isEmpty()) {
-            HttpHelper.getBytes(url, mapOf(), headerMap)
-        } else {
-            HttpHelper.getBytes(url, fieldMap, headerMap)
-        }
-    }
-
     suspend fun getResponseBytes(tag: String? = null): ByteArray? {
         if (tag != null) {
             val cookie = CookieStore.getCookie(tag)
             if (cookie.isNotEmpty()) {
-                headerMap["Cookie"] = cookie
+                headerMap["Cookie"] += ";${cookie}"
             }
         }
         val response = when {
diff --git a/app/src/main/java/io/legado/app/ui/about/AboutFragment.kt b/app/src/main/java/io/legado/app/ui/about/AboutFragment.kt
index eea2feba4..d6c7df52a 100644
--- a/app/src/main/java/io/legado/app/ui/about/AboutFragment.kt
+++ b/app/src/main/java/io/legado/app/ui/about/AboutFragment.kt
@@ -29,7 +29,8 @@ class AboutFragment : PreferenceFragmentCompat() {
         Pair("(QQ群3)981838750", "g_Sgmp2nQPKqcZQ5qPcKLHziwX_mpps9"),
         Pair("(QQ群4)256929088", "czEJPLDnT4Pd9SKQ6RoRVzKhDxLchZrO"),
         Pair("(QQ群5)811843556", "zKZ2UYGZ7o5CzcA6ylxzlqi21si_iqaX"),
-        Pair("(QQ群6)870270970", "FeCF8iSxfQbe90HPvGsvcqs5P5oSeY5n")
+        Pair("(QQ群6)870270970", "FeCF8iSxfQbe90HPvGsvcqs5P5oSeY5n"),
+        Pair("(QQ群7)15987187", "S2g2TMD0LGd3sefUADd1AbyPEW2o2XfC")
     )
 
     override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
diff --git a/app/src/main/java/io/legado/app/ui/book/explore/ExploreShowActivity.kt b/app/src/main/java/io/legado/app/ui/book/explore/ExploreShowActivity.kt
index a447bb9e1..270e7e703 100644
--- a/app/src/main/java/io/legado/app/ui/book/explore/ExploreShowActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/explore/ExploreShowActivity.kt
@@ -38,6 +38,13 @@ class ExploreShowActivity : VMBaseActivity<ExploreShowViewModel>(R.layout.activi
         loadMoreView = LoadMoreView(this)
         adapter.addFooterView(loadMoreView)
         loadMoreView.startLoad()
+        loadMoreView.setOnClickListener {
+            if (!isLoading) {
+                loadMoreView.hasMore()
+                scrollToBottom()
+                isLoading = true
+            }
+        }
         recycler_view.addOnScrollListener(object : RecyclerView.OnScrollListener() {
             override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
                 super.onScrolled(recyclerView, dx, dy)
@@ -75,4 +82,4 @@ class ExploreShowActivity : VMBaseActivity<ExploreShowViewModel>(R.layout.activi
             Pair("author", book.author)
         )
     }
-}
\ No newline at end of file
+}
diff --git a/app/src/main/java/io/legado/app/ui/book/read/ReadBookActivity.kt b/app/src/main/java/io/legado/app/ui/book/read/ReadBookActivity.kt
index c7f860697..fc73a041c 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/ReadBookActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/ReadBookActivity.kt
@@ -313,30 +313,30 @@ class ReadBookActivity : VMBaseActivity<ReadBookViewModel>(R.layout.activity_boo
      * 按键事件
      */
     override fun onKeyDown(keyCode: Int, event: KeyEvent?): Boolean {
-        when (keyCode) {
-            getPrefInt(PreferKey.prevKey) -> {
+        when {
+            ReadBookActivityHelp.isPrevKey(this, keyCode) -> {
                 if (keyCode != KeyEvent.KEYCODE_UNKNOWN) {
                     page_view.pageDelegate?.keyTurnPage(PageDelegate.Direction.PREV)
                     return true
                 }
             }
-            getPrefInt(PreferKey.nextKey) -> {
+            ReadBookActivityHelp.isNextKey(this, keyCode) -> {
                 if (keyCode != KeyEvent.KEYCODE_UNKNOWN) {
                     page_view.pageDelegate?.keyTurnPage(PageDelegate.Direction.NEXT)
                     return true
                 }
             }
-            KeyEvent.KEYCODE_VOLUME_UP -> {
+            keyCode == KeyEvent.KEYCODE_VOLUME_UP -> {
                 if (volumeKeyPage(PageDelegate.Direction.PREV)) {
                     return true
                 }
             }
-            KeyEvent.KEYCODE_VOLUME_DOWN -> {
+            keyCode == KeyEvent.KEYCODE_VOLUME_DOWN -> {
                 if (volumeKeyPage(PageDelegate.Direction.NEXT)) {
                     return true
                 }
             }
-            KeyEvent.KEYCODE_SPACE -> {
+            keyCode == KeyEvent.KEYCODE_SPACE -> {
                 page_view.pageDelegate?.keyTurnPage(PageDelegate.Direction.NEXT)
                 return true
             }
diff --git a/app/src/main/java/io/legado/app/ui/book/read/ReadBookActivityHelp.kt b/app/src/main/java/io/legado/app/ui/book/read/ReadBookActivityHelp.kt
index adb8909e1..78195ad05 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/ReadBookActivityHelp.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/ReadBookActivityHelp.kt
@@ -13,6 +13,7 @@ import android.view.WindowManager
 import android.widget.EditText
 import io.legado.app.App
 import io.legado.app.R
+import io.legado.app.constant.PreferKey
 import io.legado.app.data.entities.Bookmark
 import io.legado.app.help.AppConfig
 import io.legado.app.help.ReadBookConfig
@@ -24,6 +25,7 @@ import io.legado.app.service.help.CacheBook
 import io.legado.app.service.help.ReadBook
 import io.legado.app.ui.widget.text.AutoCompleteTextView
 import io.legado.app.utils.applyTint
+import io.legado.app.utils.getPrefString
 import io.legado.app.utils.requestInputMethod
 import kotlinx.android.synthetic.main.dialog_download_choice.view.*
 import kotlinx.android.synthetic.main.dialog_edit_text.view.*
@@ -186,4 +188,14 @@ object ReadBookActivityHelp {
             cancelButton()
         }.show().applyTint()
     }
+
+    fun isPrevKey(context: Context, keyCode: Int): Boolean {
+        val prevKeysStr = context.getPrefString(PreferKey.prevKeys)
+        return prevKeysStr?.split(",")?.contains(keyCode.toString()) ?: false
+    }
+
+    fun isNextKey(context: Context, keyCode: Int): Boolean {
+        val nextKeysStr = context.getPrefString(PreferKey.nextKeys)
+        return nextKeysStr?.split(",")?.contains(keyCode.toString()) ?: false
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/ui/book/read/ReadMenu.kt b/app/src/main/java/io/legado/app/ui/book/read/ReadMenu.kt
index 40af2c32d..d1480ac81 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/ReadMenu.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/ReadMenu.kt
@@ -26,9 +26,8 @@ import org.jetbrains.anko.sdk27.listeners.onLongClick
  */
 class ReadMenu @JvmOverloads constructor(
     context: Context,
-    attrs: AttributeSet? = null,
-    defStyleAttr: Int = 0
-) : FrameLayout(context, attrs, defStyleAttr) {
+    attrs: AttributeSet? = null
+) : FrameLayout(context, attrs) {
     var cnaShowMenu: Boolean = false
     private val callBack: CallBack? get() = activity as? CallBack
     private lateinit var menuTopIn: Animation
diff --git a/app/src/main/java/io/legado/app/ui/book/read/config/PageKeyDialog.kt b/app/src/main/java/io/legado/app/ui/book/read/config/PageKeyDialog.kt
index cfd632453..ce479caba 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/config/PageKeyDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/config/PageKeyDialog.kt
@@ -6,10 +6,9 @@ import android.view.KeyEvent
 import io.legado.app.R
 import io.legado.app.constant.PreferKey
 import io.legado.app.lib.theme.backgroundColor
-import io.legado.app.utils.getPrefInt
+import io.legado.app.utils.getPrefString
 import io.legado.app.utils.hideSoftInput
-import io.legado.app.utils.putPrefInt
-import io.legado.app.utils.removePref
+import io.legado.app.utils.putPrefString
 import kotlinx.android.synthetic.main.dialog_page_key.*
 import org.jetbrains.anko.sdk27.listeners.onClick
 
@@ -19,33 +18,34 @@ class PageKeyDialog(context: Context) : Dialog(context, R.style.AppTheme_AlertDi
     init {
         setContentView(R.layout.dialog_page_key)
         content_view.setBackgroundColor(context.backgroundColor)
-        et_prev.setText(context.getPrefInt(PreferKey.prevKey).toString())
-        et_next.setText(context.getPrefInt(PreferKey.nextKey).toString())
+        et_prev.setText(context.getPrefString(PreferKey.prevKeys))
+        et_next.setText(context.getPrefString(PreferKey.nextKeys))
         tv_ok.onClick {
-            val prevKey = et_prev.text?.toString()
-            if (prevKey.isNullOrEmpty()) {
-                context.removePref(PreferKey.prevKey)
-            } else {
-                context.putPrefInt(PreferKey.prevKey, prevKey.toInt())
-            }
-            val nextKey = et_next.text?.toString()
-            if (nextKey.isNullOrEmpty()) {
-                context.removePref(PreferKey.nextKey)
-            } else {
-                context.putPrefInt(PreferKey.nextKey, nextKey.toInt())
-            }
+            context.putPrefString(PreferKey.prevKeys, et_prev.text?.toString())
+            context.putPrefString(PreferKey.nextKeys, et_next.text?.toString())
             dismiss()
         }
     }
 
     override fun onKeyDown(keyCode: Int, event: KeyEvent): Boolean {
-        if (keyCode != KeyEvent.KEYCODE_BACK) {
+        if (keyCode != KeyEvent.KEYCODE_BACK && keyCode != KeyEvent.KEYCODE_DEL) {
             if (et_prev.hasFocus()) {
-                et_prev.setText(keyCode.toString())
+                val editableText = et_prev.editableText
+                if (editableText.isEmpty() or editableText.endsWith(",")) {
+                    editableText.append(keyCode.toString())
+                } else {
+                    editableText.append(",").append(keyCode.toString())
+                }
+                return true
             } else if (et_next.hasFocus()) {
-                et_next.setText(keyCode.toString())
+                val editableText = et_next.editableText
+                if (editableText.isEmpty() or editableText.endsWith(",")) {
+                    editableText.append(keyCode.toString())
+                } else {
+                    editableText.append(",").append(keyCode.toString())
+                }
+                return true
             }
-            return true
         }
         return super.onKeyDown(keyCode, event)
     }
diff --git a/app/src/main/java/io/legado/app/ui/book/read/page/ContentTextView.kt b/app/src/main/java/io/legado/app/ui/book/read/page/ContentTextView.kt
index 295ccb0ef..575279a1c 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/page/ContentTextView.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/page/ContentTextView.kt
@@ -23,7 +23,9 @@ import io.legado.app.utils.getCompatColor
 import io.legado.app.utils.getPrefBoolean
 import kotlinx.coroutines.CoroutineScope
 
-
+/**
+ * 阅读内容界面
+ */
 class ContentTextView(context: Context, attrs: AttributeSet?) : View(context, attrs) {
     var selectAble = context.getPrefBoolean(PreferKey.textSelectAble)
     var upView: ((TextPage) -> Unit)? = null
@@ -41,7 +43,6 @@ class ContentTextView(context: Context, attrs: AttributeSet?) : View(context, at
 
     //滚动参数
     private val pageFactory: TextPageFactory get() = callBack.pageFactory
-    private val maxScrollOffset = 100f
     private var pageOffset = 0f
 
     init {
@@ -173,17 +174,13 @@ class ContentTextView(context: Context, attrs: AttributeSet?) : View(context, at
      */
     fun onScroll(mOffset: Float) {
         if (mOffset == 0f) return
-        var offset = mOffset
-        if (offset > maxScrollOffset) {
-            offset = maxScrollOffset
-        } else if (offset < -maxScrollOffset) {
-            offset = -maxScrollOffset
-        }
-
-        pageOffset += offset
+        pageOffset += mOffset
         if (!pageFactory.hasPrev() && pageOffset > 0) {
             pageOffset = 0f
-        } else if (!pageFactory.hasNext() && pageOffset < 0) {
+        } else if (!pageFactory.hasNext()
+            && pageOffset < 0
+            && pageOffset + textPage.height < ChapterProvider.visibleHeight
+        ) {
             pageOffset = 0f
         } else if (pageOffset > 0) {
             pageFactory.moveToPrev(false)
@@ -263,7 +260,10 @@ class ContentTextView(context: Context, attrs: AttributeSet?) : View(context, at
                     for ((charIndex, textChar) in textLine.textChars.withIndex()) {
                         if (x > textChar.start && x < textChar.end) {
                             if (selectStart[0] != relativePos || selectStart[1] != lineIndex || selectStart[2] != charIndex) {
-                                if (selectToInt(relativePos, lineIndex, charIndex) > selectToInt(selectEnd)) {
+                                if (selectToInt(relativePos, lineIndex, charIndex) > selectToInt(
+                                        selectEnd
+                                    )
+                                ) {
                                     return
                                 }
                                 selectStart[0] = relativePos
@@ -306,7 +306,10 @@ class ContentTextView(context: Context, attrs: AttributeSet?) : View(context, at
                         if (x > textChar.start && x < textChar.end) {
                             Log.e("char", "$relativePos  $lineIndex $charIndex")
                             if (selectEnd[0] != relativePos || selectEnd[1] != lineIndex || selectEnd[2] != charIndex) {
-                                if (selectToInt(relativePos, lineIndex, charIndex) < selectToInt(selectStart)) {
+                                if (selectToInt(relativePos, lineIndex, charIndex) < selectToInt(
+                                        selectStart
+                                    )
+                                ) {
                                     return
                                 }
                                 selectEnd[0] = relativePos
diff --git a/app/src/main/java/io/legado/app/ui/book/read/page/ContentView.kt b/app/src/main/java/io/legado/app/ui/book/read/page/ContentView.kt
index 166a9b731..2b9d034e8 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/page/ContentView.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/page/ContentView.kt
@@ -33,9 +33,11 @@ class ContentView(context: Context) : FrameLayout(context) {
     private var tvBookName: BatteryView? = null
 
     val headerHeight: Int
-        get() = if (ReadBookConfig.hideStatusBar) {
-            if (ll_header.isGone) 0 else ll_header.height
-        } else context.statusBarHeight
+        get() {
+            val h1 = if (ReadBookConfig.hideStatusBar) 0 else context.statusBarHeight
+            val h2 = if (ll_header.isGone) 0 else ll_header.height
+            return h1 + h2
+        }
 
     init {
         //设置背景防止切换背景时文字重叠
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 4b76ebc3e..9b5d38e30 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
@@ -177,7 +177,7 @@ class ThemeConfigFragment : BasePreferenceFragment(),
 
     @SuppressLint("InflateParams")
     private fun saveThemeAlert(key: String) {
-        alert("主题名称") {
+        alert(R.string.theme_name) {
             var editText: AutoCompleteTextView? = null
             customView {
                 layoutInflater.inflate(R.layout.dialog_edit_text, null).apply {
@@ -203,7 +203,7 @@ class ThemeConfigFragment : BasePreferenceFragment(),
     private fun upTheme(isNightTheme: Boolean) {
         if (AppConfig.isNightTheme == isNightTheme) {
             listView.post {
-                App.INSTANCE.applyTheme()
+                ThemeConfig.applyTheme(requireContext())
                 recreateActivities()
             }
         }
diff --git a/app/src/main/java/io/legado/app/ui/widget/ArcView.kt b/app/src/main/java/io/legado/app/ui/widget/ArcView.kt
index 6338c6638..b92d552af 100644
--- a/app/src/main/java/io/legado/app/ui/widget/ArcView.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/ArcView.kt
@@ -8,9 +8,8 @@ import io.legado.app.R
 
 class ArcView @JvmOverloads constructor(
     context: Context,
-    attrs: AttributeSet? = null,
-    defStyleAttr: Int = 0
-) : View(context, attrs, defStyleAttr) {
+    attrs: AttributeSet? = null
+) : View(context, attrs) {
     private var mWidth = 0
     private var mHeight = 0
 
diff --git a/app/src/main/java/io/legado/app/ui/widget/BatteryView.kt b/app/src/main/java/io/legado/app/ui/widget/BatteryView.kt
index 1711a650e..3c3c1d7c3 100644
--- a/app/src/main/java/io/legado/app/ui/widget/BatteryView.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/BatteryView.kt
@@ -12,7 +12,10 @@ import androidx.appcompat.widget.AppCompatTextView
 import io.legado.app.utils.dp
 import java.io.File
 
-class BatteryView(context: Context, attrs: AttributeSet?) : AppCompatTextView(context, attrs) {
+class BatteryView @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null
+) : AppCompatTextView(context, attrs) {
     private val batteryPaint = Paint()
     private val outFrame = Rect()
     private val polar = Rect()
diff --git a/app/src/main/java/io/legado/app/ui/widget/DetailSeekBar.kt b/app/src/main/java/io/legado/app/ui/widget/DetailSeekBar.kt
index 5198599e4..010ebba78 100644
--- a/app/src/main/java/io/legado/app/ui/widget/DetailSeekBar.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/DetailSeekBar.kt
@@ -13,7 +13,10 @@ import io.legado.app.utils.progressAdd
 import kotlinx.android.synthetic.main.view_detail_seek_bar.view.*
 import org.jetbrains.anko.sdk27.listeners.onClick
 
-class DetailSeekBar(context: Context, attrs: AttributeSet?) : FrameLayout(context, attrs),
+class DetailSeekBar @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null
+) : FrameLayout(context, attrs),
     SeekBar.OnSeekBarChangeListener {
     private val isBottomBackground: Boolean
     var valueFormat: ((progress: Int) -> String)? = null
diff --git a/app/src/main/java/io/legado/app/ui/widget/LabelsBar.kt b/app/src/main/java/io/legado/app/ui/widget/LabelsBar.kt
index 4d51c5b80..01c4957db 100644
--- a/app/src/main/java/io/legado/app/ui/widget/LabelsBar.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/LabelsBar.kt
@@ -8,7 +8,10 @@ import io.legado.app.ui.widget.text.AccentBgTextView
 import io.legado.app.utils.dp
 
 @Suppress("unused", "MemberVisibilityCanBePrivate")
-class LabelsBar(context: Context, attrs: AttributeSet?) : LinearLayout(context, attrs) {
+class LabelsBar @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null
+) : LinearLayout(context, attrs) {
 
     private val unUsedViews = arrayListOf<TextView>()
     private val usedViews = arrayListOf<TextView>()
diff --git a/app/src/main/java/io/legado/app/ui/widget/SearchView.kt b/app/src/main/java/io/legado/app/ui/widget/SearchView.kt
index 82d24c671..975fe9d57 100644
--- a/app/src/main/java/io/legado/app/ui/widget/SearchView.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/SearchView.kt
@@ -18,9 +18,8 @@ import io.legado.app.R
 
 class SearchView @JvmOverloads constructor(
     context: Context,
-    attrs: AttributeSet? = null,
-    defStyleAttr: Int = 0
-) : SearchView(context, attrs, defStyleAttr) {
+    attrs: AttributeSet? = null
+) : SearchView(context, attrs) {
     private var mSearchHintIcon: Drawable? = null
     private var textView: TextView? = null
 
diff --git a/app/src/main/java/io/legado/app/ui/widget/SelectActionBar.kt b/app/src/main/java/io/legado/app/ui/widget/SelectActionBar.kt
index fd478ae42..3fc481e8b 100644
--- a/app/src/main/java/io/legado/app/ui/widget/SelectActionBar.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/SelectActionBar.kt
@@ -17,7 +17,10 @@ import kotlinx.android.synthetic.main.view_select_action_bar.view.*
 import org.jetbrains.anko.sdk27.listeners.onClick
 
 @Suppress("unused")
-class SelectActionBar(context: Context, attrs: AttributeSet?) : FrameLayout(context, attrs) {
+class SelectActionBar @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null
+) : FrameLayout(context, attrs) {
     private var callBack: CallBack? = null
     private var selMenu: PopupMenu? = null
 
diff --git a/app/src/main/java/io/legado/app/ui/widget/ShadowLayout.kt b/app/src/main/java/io/legado/app/ui/widget/ShadowLayout.kt
index 76668e772..95e54ac63 100644
--- a/app/src/main/java/io/legado/app/ui/widget/ShadowLayout.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/ShadowLayout.kt
@@ -14,11 +14,10 @@ import io.legado.app.utils.getCompatColor
 /**
  * ShadowLayout.java
  *
- *
  * Created by lijiankun on 17/8/11.
  */
 @Suppress("unused")
-class ShadowLayout(
+class ShadowLayout @JvmOverloads constructor(
     context: Context,
     attrs: AttributeSet? = null
 ) : RelativeLayout(context, attrs) {
diff --git a/app/src/main/java/io/legado/app/ui/widget/TitleBar.kt b/app/src/main/java/io/legado/app/ui/widget/TitleBar.kt
index a30873671..51a04f97d 100644
--- a/app/src/main/java/io/legado/app/ui/widget/TitleBar.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/TitleBar.kt
@@ -22,7 +22,10 @@ import org.jetbrains.anko.bottomPadding
 import org.jetbrains.anko.topPadding
 
 @Suppress("unused")
-class TitleBar(context: Context, attrs: AttributeSet?) : AppBarLayout(context, attrs) {
+class TitleBar @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null
+) : AppBarLayout(context, attrs) {
 
     val toolbar: Toolbar
     val menu: Menu
diff --git a/app/src/main/java/io/legado/app/ui/widget/anima/RefreshProgressBar.kt b/app/src/main/java/io/legado/app/ui/widget/anima/RefreshProgressBar.kt
index 1791b3be7..3a0af5b03 100644
--- a/app/src/main/java/io/legado/app/ui/widget/anima/RefreshProgressBar.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/anima/RefreshProgressBar.kt
@@ -14,9 +14,8 @@ import io.legado.app.R
 @Suppress("unused", "MemberVisibilityCanBePrivate")
 class RefreshProgressBar @JvmOverloads constructor(
     context: Context,
-    attrs: AttributeSet? = null,
-    defStyleAttr: Int = 0
-) : View(context, attrs, defStyleAttr) {
+    attrs: AttributeSet? = null
+) : View(context, attrs) {
     private var a = 1
     private var durProgress = 0
     private var secondDurProgress = 0
diff --git a/app/src/main/java/io/legado/app/ui/widget/anima/RotateLoading.kt b/app/src/main/java/io/legado/app/ui/widget/anima/RotateLoading.kt
index 13c4f346d..634f9689e 100644
--- a/app/src/main/java/io/legado/app/ui/widget/anima/RotateLoading.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/anima/RotateLoading.kt
@@ -18,9 +18,12 @@ import io.legado.app.utils.dp
  * Created by Victor on 2015/4/28.
  */
 @Suppress("MemberVisibilityCanBePrivate")
-class RotateLoading : View {
+class RotateLoading @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null
+) : View(context, attrs) {
 
-    private lateinit var mPaint: Paint
+    private var mPaint: Paint
 
     private var loadingRectF: RectF? = null
     private var shadowRectF: RectF? = null
@@ -55,19 +58,7 @@ class RotateLoading : View {
 
     private val hidden = Runnable { this.stopInternal() }
 
-    constructor(context: Context) : super(context) {
-        initView(context, null)
-    }
-
-    constructor(context: Context, attrs: AttributeSet) : super(context, attrs) {
-        initView(context, attrs)
-    }
-
-    constructor(context: Context, attrs: AttributeSet, defStyleAttr: Int) : super(context, attrs, defStyleAttr) {
-        initView(context, attrs)
-    }
-
-    private fun initView(context: Context, attrs: AttributeSet?) {
+    init {
         loadingColor = context.accentColor
         thisWidth = DEFAULT_WIDTH.dp
         shadowPosition = DEFAULT_SHADOW_POSITION.dp
diff --git a/app/src/main/java/io/legado/app/ui/widget/anima/explosion_field/ExplosionView.kt b/app/src/main/java/io/legado/app/ui/widget/anima/explosion_field/ExplosionView.kt
index 9eef530f2..7345e7ed9 100644
--- a/app/src/main/java/io/legado/app/ui/widget/anima/explosion_field/ExplosionView.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/anima/explosion_field/ExplosionView.kt
@@ -30,7 +30,8 @@ import java.util.*
 
 
 @Suppress("unused")
-class ExplosionView : View {
+class ExplosionView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null) :
+    View(context, attrs) {
 
     private var customDuration = ExplosionAnimator.DEFAULT_DURATION
     private var idPlayAnimationEffect = 0
@@ -40,24 +41,7 @@ class ExplosionView : View {
     private val mExplosions = ArrayList<ExplosionAnimator>()
     private val mExpandInset = IntArray(2)
 
-    constructor(context: Context) : super(context) {
-        init()
-    }
-
-    constructor(context: Context, attrs: AttributeSet) : super(context, attrs) {
-        init()
-    }
-
-    constructor(context: Context, attrs: AttributeSet, defStyleAttr: Int) : super(
-        context,
-        attrs,
-        defStyleAttr
-    ) {
-        init()
-    }
-
-    private fun init() {
-
+    init {
         Arrays.fill(mExpandInset, Utils.dp2Px(32))
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/widget/dynamiclayout/DynamicFrameLayout.kt b/app/src/main/java/io/legado/app/ui/widget/dynamiclayout/DynamicFrameLayout.kt
index 683cbc5d9..d3115bdc9 100644
--- a/app/src/main/java/io/legado/app/ui/widget/dynamiclayout/DynamicFrameLayout.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/dynamiclayout/DynamicFrameLayout.kt
@@ -13,7 +13,10 @@ import io.legado.app.R
 import kotlinx.android.synthetic.main.view_dynamic.view.*
 
 @Suppress("unused")
-class DynamicFrameLayout(context: Context, attrs: AttributeSet?) : FrameLayout(context, attrs), ViewSwitcher {
+class DynamicFrameLayout @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null
+) : FrameLayout(context, attrs), ViewSwitcher {
 
     private var errorView: View? = null
     private var errorImage: AppCompatImageView? = null
diff --git a/app/src/main/java/io/legado/app/ui/widget/image/CircleImageView.kt b/app/src/main/java/io/legado/app/ui/widget/image/CircleImageView.kt
index 2364deab7..f5781183e 100644
--- a/app/src/main/java/io/legado/app/ui/widget/image/CircleImageView.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/image/CircleImageView.kt
@@ -25,8 +25,10 @@ import kotlin.math.min
 import kotlin.math.pow
 
 @Suppress("unused", "MemberVisibilityCanBePrivate")
-class CircleImageView(context: Context, attrs: AttributeSet) :
-    AppCompatImageView(context, attrs) {
+class CircleImageView @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null
+) : AppCompatImageView(context, attrs) {
 
     private val mDrawableRect = RectF()
     private val mBorderRect = RectF()
diff --git a/app/src/main/java/io/legado/app/ui/widget/image/CoverImageView.kt b/app/src/main/java/io/legado/app/ui/widget/image/CoverImageView.kt
index 5a85a0573..d09eae0dd 100644
--- a/app/src/main/java/io/legado/app/ui/widget/image/CoverImageView.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/image/CoverImageView.kt
@@ -22,12 +22,10 @@ import io.legado.app.utils.getPrefString
 @Suppress("unused")
 class CoverImageView @JvmOverloads constructor(
     context: Context,
-    attrs: AttributeSet? = null,
-    defStyleAttr: Int = 0
+    attrs: AttributeSet? = null
 ) : androidx.appcompat.widget.AppCompatImageView(
     context,
-    attrs,
-    defStyleAttr
+    attrs
 ) {
     internal var width: Float = 0.toFloat()
     internal var height: Float = 0.toFloat()
diff --git a/app/src/main/java/io/legado/app/ui/widget/image/FilletImageView.kt b/app/src/main/java/io/legado/app/ui/widget/image/FilletImageView.kt
index 57428fe47..eefcdafc8 100644
--- a/app/src/main/java/io/legado/app/ui/widget/image/FilletImageView.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/image/FilletImageView.kt
@@ -12,9 +12,8 @@ import kotlin.math.max
 
 class FilletImageView @JvmOverloads constructor(
     context: Context,
-    attrs: AttributeSet? = null,
-    defStyleAttr: Int = 0
-) : AppCompatImageView(context, attrs, defStyleAttr) {
+    attrs: AttributeSet? = null
+) : AppCompatImageView(context, attrs) {
     internal var width: Float = 0.toFloat()
     internal var height: Float = 0.toFloat()
     private var leftTopRadius: Int = 0
diff --git a/app/src/main/java/io/legado/app/ui/widget/image/PhotoView.kt b/app/src/main/java/io/legado/app/ui/widget/image/PhotoView.kt
index 08cc63e3a..5d80f087e 100644
--- a/app/src/main/java/io/legado/app/ui/widget/image/PhotoView.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/image/PhotoView.kt
@@ -27,9 +27,8 @@ import kotlin.math.roundToInt
 @Suppress("UNUSED_PARAMETER", "unused", "MemberVisibilityCanBePrivate", "PropertyName")
 class PhotoView @JvmOverloads constructor(
     context: Context,
-    attrs: AttributeSet? = null,
-    defStyleAttr: Int = 0
-) : AppCompatImageView(context, attrs, defStyleAttr) {
+    attrs: AttributeSet? = null
+) : AppCompatImageView(context, attrs) {
     val MIN_ROTATE = 35
     val ANIMA_DURING = 340
     val MAX_SCALE = 2.5f
diff --git a/app/src/main/java/io/legado/app/ui/widget/recycler/LoadMoreView.kt b/app/src/main/java/io/legado/app/ui/widget/recycler/LoadMoreView.kt
index 01cb906cb..ed62431e1 100644
--- a/app/src/main/java/io/legado/app/ui/widget/recycler/LoadMoreView.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/recycler/LoadMoreView.kt
@@ -1,6 +1,7 @@
 package io.legado.app.ui.widget.recycler
 
 import android.content.Context
+import android.util.AttributeSet
 import android.view.View
 import android.view.ViewGroup
 import android.widget.FrameLayout
@@ -10,7 +11,7 @@ import io.legado.app.utils.visible
 import kotlinx.android.synthetic.main.view_load_more.view.*
 
 @Suppress("unused")
-class LoadMoreView(context: Context) : FrameLayout(context) {
+class LoadMoreView(context: Context, attrs: AttributeSet? = null) : FrameLayout(context, attrs) {
 
     var hasMore = true
         private set
@@ -32,7 +33,13 @@ class LoadMoreView(context: Context) : FrameLayout(context) {
     fun stopLoad() {
         rotate_loading.hide()
     }
-
+    
+    fun hasMore() {
+        hasMore = true
+        tv_text.invisible()
+        rotate_loading.show()
+    }
+    
     fun noMore(msg: String? = null) {
         hasMore = false
         rotate_loading.hide()
@@ -44,4 +51,4 @@ class LoadMoreView(context: Context) : FrameLayout(context) {
         tv_text.visible()
     }
 
-}
\ No newline at end of file
+}
diff --git a/app/src/main/java/io/legado/app/ui/widget/seekbar/VerticalSeekBar.kt b/app/src/main/java/io/legado/app/ui/widget/seekbar/VerticalSeekBar.kt
index ab4509954..736b9eb3a 100644
--- a/app/src/main/java/io/legado/app/ui/widget/seekbar/VerticalSeekBar.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/seekbar/VerticalSeekBar.kt
@@ -17,7 +17,8 @@ import java.lang.reflect.InvocationTargetException
 import java.lang.reflect.Method
 
 @Suppress("SameParameterValue")
-class VerticalSeekBar : AppCompatSeekBar {
+class VerticalSeekBar @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null) :
+    AppCompatSeekBar(context, attrs) {
 
     private var mIsDragging: Boolean = false
     private var mThumb: Drawable? = null
@@ -54,38 +55,12 @@ class VerticalSeekBar : AppCompatSeekBar {
             }
         }
 
-    constructor(context: Context) : super(context) {
-        initialize(context, null, 0, 0)
-    }
-
-    constructor(context: Context, attrs: AttributeSet) : super(context, attrs) {
-        initialize(context, attrs, 0, 0)
-    }
-
-    constructor(context: Context, attrs: AttributeSet, defStyle: Int) : super(
-        context,
-        attrs,
-        defStyle
-    ) {
-        initialize(context, attrs, defStyle, 0)
-    }
-
-    private fun initialize(
-        context: Context,
-        attrs: AttributeSet?,
-        defStyleAttr: Int,
-        defStyleRes: Int
-    ) {
+    init {
         ATH.setTint(this, ThemeStore.accentColor(context))
         ViewCompat.setLayoutDirection(this, ViewCompat.LAYOUT_DIRECTION_LTR)
 
         if (attrs != null) {
-            val a = context.obtainStyledAttributes(
-                attrs,
-                R.styleable.VerticalSeekBar,
-                defStyleAttr,
-                defStyleRes
-            )
+            val a = context.obtainStyledAttributes(attrs, R.styleable.VerticalSeekBar)
             val rotationAngle = a.getInteger(R.styleable.VerticalSeekBar_seekBarRotation, 0)
             if (isValidRotationAngle(rotationAngle)) {
                 mRotationAngle = rotationAngle
diff --git a/app/src/main/java/io/legado/app/ui/widget/seekbar/VerticalSeekBarWrapper.kt b/app/src/main/java/io/legado/app/ui/widget/seekbar/VerticalSeekBarWrapper.kt
index da69c33ab..683953f1a 100644
--- a/app/src/main/java/io/legado/app/ui/widget/seekbar/VerticalSeekBarWrapper.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/seekbar/VerticalSeekBarWrapper.kt
@@ -13,9 +13,8 @@ import kotlin.math.max
 
 class VerticalSeekBarWrapper @JvmOverloads constructor(
     context: Context,
-    attrs: AttributeSet? = null,
-    defStyleAttr: Int = 0
-) : FrameLayout(context, attrs, defStyleAttr) {
+    attrs: AttributeSet? = null
+) : FrameLayout(context, attrs) {
 
     private val childSeekBar: VerticalSeekBar?
         get() {
diff --git a/app/src/main/java/io/legado/app/ui/widget/text/AccentBgTextView.kt b/app/src/main/java/io/legado/app/ui/widget/text/AccentBgTextView.kt
index 3d9df36f0..ccaffaf79 100644
--- a/app/src/main/java/io/legado/app/ui/widget/text/AccentBgTextView.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/text/AccentBgTextView.kt
@@ -11,8 +11,10 @@ import io.legado.app.utils.ColorUtils
 import io.legado.app.utils.dp
 import io.legado.app.utils.getCompatColor
 
-class AccentBgTextView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null) :
-    AppCompatTextView(context, attrs) {
+class AccentBgTextView @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null
+) : AppCompatTextView(context, attrs) {
 
     private var radius = 0
 
diff --git a/app/src/main/java/io/legado/app/ui/widget/text/AutoCompleteTextView.kt b/app/src/main/java/io/legado/app/ui/widget/text/AutoCompleteTextView.kt
index c7eb18ee4..cff5714f4 100644
--- a/app/src/main/java/io/legado/app/ui/widget/text/AutoCompleteTextView.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/text/AutoCompleteTextView.kt
@@ -19,9 +19,8 @@ import org.jetbrains.anko.sdk27.listeners.onClick
 @Suppress("unused")
 class AutoCompleteTextView @JvmOverloads constructor(
     context: Context,
-    attrs: AttributeSet? = null,
-    defStyleAttr: Int = 0
-) : AppCompatAutoCompleteTextView(context, attrs, defStyleAttr) {
+    attrs: AttributeSet? = null
+) : AppCompatAutoCompleteTextView(context, attrs) {
 
     var delCallBack: ((value: String) -> Unit)? = null
 
diff --git a/app/src/main/java/io/legado/app/ui/widget/text/BadgeView.kt b/app/src/main/java/io/legado/app/ui/widget/text/BadgeView.kt
index c24e13e87..353fa9de4 100644
--- a/app/src/main/java/io/legado/app/ui/widget/text/BadgeView.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/text/BadgeView.kt
@@ -24,11 +24,11 @@ import io.legado.app.utils.visible
 /**
  * Created by milad heydari on 5/6/2016.
  */
+@Suppress("MemberVisibilityCanBePrivate", "unused")
 class BadgeView @JvmOverloads constructor(
     context: Context,
-    attrs: AttributeSet? = null,
-    defStyle: Int = android.R.attr.textViewStyle
-) : AppCompatTextView(context, attrs, defStyle) {
+    attrs: AttributeSet? = null
+) : AppCompatTextView(context, attrs) {
 
     var isHideOnNull = true
         set(hideOnNull) {
diff --git a/app/src/main/java/io/legado/app/ui/widget/text/InertiaScrollTextView.kt b/app/src/main/java/io/legado/app/ui/widget/text/InertiaScrollTextView.kt
index 051d5af4e..9644b8676 100644
--- a/app/src/main/java/io/legado/app/ui/widget/text/InertiaScrollTextView.kt
+++ b/app/src/main/java/io/legado/app/ui/widget/text/InertiaScrollTextView.kt
@@ -15,14 +15,11 @@ import kotlin.math.max
 import kotlin.math.min
 
 
-open class InertiaScrollTextView : AppCompatTextView {
-    constructor(context: Context) : super(context)
-
-    constructor(context: Context, attrs: AttributeSet?) : super(context, attrs)
-
-    constructor(context: Context, attrs: AttributeSet?, defStyleAttr: Int)
-            : super(context, attrs, defStyleAttr)
-
+@Suppress("unused")
+open class InertiaScrollTextView @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null
+) : AppCompatTextView(context, attrs) {
 
     private val scrollStateIdle = 0
     private val scrollStateDragging = 1
@@ -218,7 +215,7 @@ open class InertiaScrollTextView : AppCompatTextView {
             }
         }
 
-        internal fun postOnAnimation() {
+        fun postOnAnimation() {
             if (mEatRunOnAnimationRequest) {
                 mReSchedulePostAnimationCallback = true
             } else {
diff --git a/app/src/main/java/io/legado/app/utils/ContextExtensions.kt b/app/src/main/java/io/legado/app/utils/ContextExtensions.kt
index b99f935eb..7366cb602 100644
--- a/app/src/main/java/io/legado/app/utils/ContextExtensions.kt
+++ b/app/src/main/java/io/legado/app/utils/ContextExtensions.kt
@@ -56,7 +56,7 @@ fun Context.getPrefString(key: String, defValue: String? = null) =
 fun Context.getPrefString(@StringRes keyId: Int, defValue: String? = null) =
     defaultSharedPreferences.getString(getString(keyId), defValue)
 
-fun Context.putPrefString(key: String, value: String) =
+fun Context.putPrefString(key: String, value: String?) =
     defaultSharedPreferences.edit { putString(key, value) }
 
 fun Context.getPrefStringSet(
diff --git a/app/src/main/res/layout/dialog_page_key.xml b/app/src/main/res/layout/dialog_page_key.xml
index f2e1c8a3a..8c5b7a1fa 100644
--- a/app/src/main/res/layout/dialog_page_key.xml
+++ b/app/src/main/res/layout/dialog_page_key.xml
@@ -26,7 +26,6 @@
             android:id="@+id/et_prev"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:inputType="number"
             android:singleLine="true" />
 
     </io.legado.app.ui.widget.text.TextInputLayout>
@@ -41,11 +40,17 @@
             android:id="@+id/et_next"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:inputType="number"
             android:singleLine="true" />
 
     </io.legado.app.ui.widget.text.TextInputLayout>
 
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_margin="5dp"
+        android:textColor="@color/secondaryText"
+        android:text="@string/page_key_set_help" />
+
     <TextView
         android:id="@+id/tv_ok"
         android:layout_width="match_parent"
diff --git a/app/src/main/res/values-zh-rHK/strings.xml b/app/src/main/res/values-zh-rHK/strings.xml
index 1e6a0da5b..598a5577d 100644
--- a/app/src/main/res/values-zh-rHK/strings.xml
+++ b/app/src/main/res/values-zh-rHK/strings.xml
@@ -769,5 +769,7 @@
     <string name="search_content">全文搜索</string>
     <string name="rss_source_empty">关注公众号[开源阅读]获取订阅源!</string>
     <string name="explore_empty">当前没有发现源,关注公众号[开源阅读]添加带发现的书源!</string>
+    <string name="page_key_set_help">将焦点放到输入框按下物理按键会自动录入键值,多个按键会自动用英文逗号隔开.</string>
+    <string name="theme_name">主题名称</string>
 
 </resources>
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index e30d9bddf..17b939c02 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -769,5 +769,7 @@
     <string name="search_content">全文搜尋</string>
     <string name="rss_source_empty">關注公眾號[开源阅读]獲取訂閱源!</string>
     <string name="explore_empty">目前沒有發現源,關注公眾號[开源阅读]添加包含發現的書源!</string>
+    <string name="page_key_set_help">将焦点放到输入框按下物理按键会自动录入键值,多个按键会自动用英文逗号隔开.</string>
+    <string name="theme_name">主题名称</string>
 
 </resources>
diff --git a/app/src/main/res/values-zh/strings.xml b/app/src/main/res/values-zh/strings.xml
index 270f502de..18c518d9c 100644
--- a/app/src/main/res/values-zh/strings.xml
+++ b/app/src/main/res/values-zh/strings.xml
@@ -772,5 +772,7 @@
     <string name="search_content">全文搜索</string>
     <string name="rss_source_empty">关注公众号[开源阅读]获取订阅源!</string>
     <string name="explore_empty">当前没有发现源,关注公众号[开源阅读]添加带发现的书源!</string>
+    <string name="page_key_set_help">将焦点放到输入框按下物理按键会自动录入键值,多个按键会自动用英文逗号隔开.</string>
+    <string name="theme_name">主题名称</string>
 
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 7c257fcfc..cdb9bc509 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -775,5 +775,7 @@
     <string name="search_content">Search content</string>
     <string name="rss_source_empty">关注公众号[开源阅读]获取订阅源!</string>
     <string name="explore_empty">当前没有发现源,关注公众号[开源阅读]添加带发现的书源!</string>
+    <string name="page_key_set_help">将焦点放到输入框按下物理按键会自动录入键值,多个按键会自动用英文逗号隔开.</string>
+    <string name="theme_name">主题名称</string>
 
 </resources>