diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 215f31c33..3733c9bc4 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -54,6 +54,8 @@
 # Android开发中一些需要保留的公共部分
 #
 #############################################
+# 屏蔽错误Unresolved class name
+#noinspection ShrinkerUnresolvedReference
 
 # 保留我们使用的四大组件，自定义的Application等等这些类不被混淆
 # 因为这些子类都有可能被外部调用
@@ -66,7 +68,6 @@
 -keep public class * extends android.preference.Preference
 -keep public class * extends android.view.View
 
-
 # 保留androidx下的所有类及其内部类
 -keep class androidx.** {*;}
 
diff --git a/app/src/main/assets/httpTTS.json b/app/src/main/assets/defaultData/httpTTS.json
similarity index 100%
rename from app/src/main/assets/httpTTS.json
rename to app/src/main/assets/defaultData/httpTTS.json
diff --git a/app/src/main/assets/readConfig.json b/app/src/main/assets/defaultData/readConfig.json
similarity index 100%
rename from app/src/main/assets/readConfig.json
rename to app/src/main/assets/defaultData/readConfig.json
diff --git a/app/src/main/assets/themeConfig.json b/app/src/main/assets/defaultData/themeConfig.json
similarity index 100%
rename from app/src/main/assets/themeConfig.json
rename to app/src/main/assets/defaultData/themeConfig.json
diff --git a/app/src/main/assets/txtTocRule.json b/app/src/main/assets/defaultData/txtTocRule.json
similarity index 100%
rename from app/src/main/assets/txtTocRule.json
rename to app/src/main/assets/defaultData/txtTocRule.json
diff --git a/app/src/main/assets/number.ttf b/app/src/main/assets/font/number.ttf
similarity index 100%
rename from app/src/main/assets/number.ttf
rename to app/src/main/assets/font/number.ttf
diff --git a/app/src/main/assets/help.md b/app/src/main/assets/help/help.md
similarity index 100%
rename from app/src/main/assets/help.md
rename to app/src/main/assets/help/help.md
diff --git a/app/src/main/assets/help/httpTts.md b/app/src/main/assets/help/httpTts.md
new file mode 100644
index 000000000..f3beb4c6b
--- /dev/null
+++ b/app/src/main/assets/help/httpTts.md
@@ -0,0 +1,15 @@
+# 在线朗读规则说明
+
+* 在线朗读规则为url规则,同书源url
+* js参数
+~~~
+speakText //朗读文本
+speakSpeed //朗读速度,0-45
+~~~
+* 例:
+~~~
+http://tts.baidu.com/text2audio,{
+    "method": "POST",
+    "body": "tex={{java.encodeURI(java.encodeURI(speakText))}}&spd={{String((speakSpeed + 5) / 10 + 4)}}&per=5003&cuid=baidu_speech_demo&idx=1&cod=2&lan=zh&ctp=1&pdt=1&vol=5&pit=5&_res_tag_=audio"
+}
+~~~
\ No newline at end of file
diff --git a/app/src/main/assets/updateLog.md b/app/src/main/assets/updateLog.md
index ec5355f22..70e2b98ae 100644
--- a/app/src/main/assets/updateLog.md
+++ b/app/src/main/assets/updateLog.md
@@ -3,6 +3,10 @@
 * 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】。
 
+**2020/10/19**
+* 优化分组管理
+* 修复预下载没有保存的bug
+
 **2020/10/18**
 * 优化分组管理,默认分组可以重命名了
 * 修复书架空白的bug,是constraintlayout库新版本的bug
diff --git a/app/src/main/java/io/legado/app/base/BaseFragment.kt b/app/src/main/java/io/legado/app/base/BaseFragment.kt
index 155bb6076..eb7805029 100644
--- a/app/src/main/java/io/legado/app/base/BaseFragment.kt
+++ b/app/src/main/java/io/legado/app/base/BaseFragment.kt
@@ -15,6 +15,7 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlin.coroutines.CoroutineContext
 
+@Suppress("MemberVisibilityCanBePrivate")
 abstract class BaseFragment(layoutID: Int) : Fragment(layoutID),
     CoroutineScope {
     lateinit var job: Job
diff --git a/app/src/main/java/io/legado/app/base/BaseService.kt b/app/src/main/java/io/legado/app/base/BaseService.kt
index f00540526..192737447 100644
--- a/app/src/main/java/io/legado/app/base/BaseService.kt
+++ b/app/src/main/java/io/legado/app/base/BaseService.kt
@@ -18,7 +18,9 @@ abstract class BaseService : Service(), CoroutineScope by MainScope() {
         block: suspend CoroutineScope.() -> T
     ) = Coroutine.async(scope, context) { block() }
 
-    override fun onBind(intent: Intent?) = null
+    override fun onBind(intent: Intent?): IBinder? {
+        return null
+    }
 
     override fun onDestroy() {
         super.onDestroy()
diff --git a/app/src/main/java/io/legado/app/base/BaseViewModel.kt b/app/src/main/java/io/legado/app/base/BaseViewModel.kt
index c8332e0cc..e5432e204 100644
--- a/app/src/main/java/io/legado/app/base/BaseViewModel.kt
+++ b/app/src/main/java/io/legado/app/base/BaseViewModel.kt
@@ -11,6 +11,7 @@ import org.jetbrains.anko.AnkoLogger
 import org.jetbrains.anko.toast
 import kotlin.coroutines.CoroutineContext
 
+@Suppress("unused")
 open class BaseViewModel(application: Application) : AndroidViewModel(application),
     CoroutineScope by MainScope(),
     AnkoLogger {
diff --git a/app/src/main/java/io/legado/app/base/adapter/CommonRecyclerAdapter.kt b/app/src/main/java/io/legado/app/base/adapter/CommonRecyclerAdapter.kt
index 0ae540837..4fd0fd520 100644
--- a/app/src/main/java/io/legado/app/base/adapter/CommonRecyclerAdapter.kt
+++ b/app/src/main/java/io/legado/app/base/adapter/CommonRecyclerAdapter.kt
@@ -15,6 +15,7 @@ import java.util.*
  *
  * 通用的adapter 可添加header，footer，以及不同类型item
  */
+@Suppress("unused", "MemberVisibilityCanBePrivate")
 abstract class CommonRecyclerAdapter<ITEM>(protected val context: Context) :
     RecyclerView.Adapter<ItemViewHolder>() {
 
diff --git a/app/src/main/java/io/legado/app/base/adapter/InfiniteScrollListener.kt b/app/src/main/java/io/legado/app/base/adapter/InfiniteScrollListener.kt
index a679f3e08..08f9716f3 100644
--- a/app/src/main/java/io/legado/app/base/adapter/InfiniteScrollListener.kt
+++ b/app/src/main/java/io/legado/app/base/adapter/InfiniteScrollListener.kt
@@ -8,6 +8,7 @@ import androidx.recyclerview.widget.RecyclerView
  *
  * 上拉加载更多
  */
+@Suppress("unused")
 abstract class InfiniteScrollListener() : RecyclerView.OnScrollListener() {
     private val loadMoreRunnable = Runnable { onLoadMore() }
 
diff --git a/app/src/main/java/io/legado/app/base/adapter/ItemAnimation.kt b/app/src/main/java/io/legado/app/base/adapter/ItemAnimation.kt
index e2c37d708..3f70ca3ea 100644
--- a/app/src/main/java/io/legado/app/base/adapter/ItemAnimation.kt
+++ b/app/src/main/java/io/legado/app/base/adapter/ItemAnimation.kt
@@ -7,6 +7,7 @@ import io.legado.app.base.adapter.animations.*
 /**
  * Created by Invincible on 2017/12/15.
  */
+@Suppress("unused")
 class ItemAnimation private constructor() {
 
     var itemAnimEnabled = false
diff --git a/app/src/main/java/io/legado/app/data/AppDatabase.kt b/app/src/main/java/io/legado/app/data/AppDatabase.kt
index dc144493b..ab989580e 100644
--- a/app/src/main/java/io/legado/app/data/AppDatabase.kt
+++ b/app/src/main/java/io/legado/app/data/AppDatabase.kt
@@ -49,12 +49,10 @@ abstract class AppDatabase: RoomDatabase() {
         private val dbCallback = object : Callback() {
 
             override fun onCreate(db: SupportSQLiteDatabase) {
-                super.onCreate(db)
                 db.setLocale(Locale.CHINESE)
             }
 
             override fun onOpen(db: SupportSQLiteDatabase) {
-                db.setLocale(Locale.CHINESE)
                 db.execSQL(
                     """
                     insert into book_groups(groupId, groupName, 'order', show) select ${AppConst.bookGroupAllId}, '全部', -10, 1
diff --git a/app/src/main/java/io/legado/app/data/entities/rule/ContentRule.kt b/app/src/main/java/io/legado/app/data/entities/rule/ContentRule.kt
index a3c565652..ab6471dde 100644
--- a/app/src/main/java/io/legado/app/data/entities/rule/ContentRule.kt
+++ b/app/src/main/java/io/legado/app/data/entities/rule/ContentRule.kt
@@ -10,5 +10,5 @@ data class ContentRule(
     var webJs: String? = null,
     var sourceRegex: String? = null,
     var replaceRegex: String? = null,
-    var imageStyle: String? = null  //默认大小居中,1最大宽度
+    var imageStyle: String? = null  //默认大小居中,FULL最大宽度
 ) : Parcelable
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/help/ActivityHelp.kt b/app/src/main/java/io/legado/app/help/ActivityHelp.kt
index 8d07a3500..9c9cb0175 100644
--- a/app/src/main/java/io/legado/app/help/ActivityHelp.kt
+++ b/app/src/main/java/io/legado/app/help/ActivityHelp.kt
@@ -10,6 +10,7 @@ import java.util.*
 /**
  * Activity管理器,管理项目中Activity的状态
  */
+@Suppress("unused")
 object ActivityHelp : Application.ActivityLifecycleCallbacks {
 
     private val activities: MutableList<WeakReference<Activity>> = arrayListOf()
diff --git a/app/src/main/java/io/legado/app/help/BlurTransformation.kt b/app/src/main/java/io/legado/app/help/BlurTransformation.kt
index 4493228c4..74de12038 100644
--- a/app/src/main/java/io/legado/app/help/BlurTransformation.kt
+++ b/app/src/main/java/io/legado/app/help/BlurTransformation.kt
@@ -28,7 +28,7 @@ class BlurTransformation(context: Context, private val radius: Int) : CenterCrop
         //图片缩小1/2
         val width = (min(outWidth, transform.width) / 2f).roundToInt()
         val height = (min(outHeight, transform.height) / 2f).roundToInt()
-        val blurredBitmap = Bitmap.createScaledBitmap(transform, width, height, false);
+        val blurredBitmap = Bitmap.createScaledBitmap(transform, width, height, false)
         // Allocate memory for Renderscript to work with
         //分配用于渲染脚本的内存
         val input = Allocation.createFromBitmap(
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 32d5262ce..4f1a2ba9f 100644
--- a/app/src/main/java/io/legado/app/help/BookHelp.kt
+++ b/app/src/main/java/io/legado/app/help/BookHelp.kt
@@ -267,8 +267,9 @@ object BookHelp {
         }
     }
 
-    private val chapterNamePattern =
+    private val chapterNamePattern by lazy {
         Pattern.compile("^(.*?第([\\d零〇一二两三四五六七八九十百千万壹贰叁肆伍陆柒捌玖拾佰仟０-９\\s]+)[章节篇回集])[、，。　：:.\\s]*")
+    }
 
     private fun getChapterNum(chapterName: String?): Int {
         if (chapterName != null) {
@@ -280,15 +281,25 @@ object BookHelp {
         return -1
     }
 
-    private fun getPureChapterName(chapterName: String?): String {
+    @Suppress("SpellCheckingInspection")
+    private val regexOther by lazy {
         // 所有非字母数字中日韩文字 CJK区+扩展A-F区
+        return@lazy "[^\\w\\u4E00-\\u9FEF〇\\u3400-\\u4DBF\\u20000-\\u2A6DF\\u2A700-\\u2EBEF]".toRegex()
+    }
+
+    private val regexA by lazy {
+        return@lazy "\\s".toRegex()
+    }
+
+    private val regexB by lazy {
+        return@lazy "^第.*?章|[(\\[][^()\\[\\]]{2,}[)\\]]$".toRegex()
+    }
+
+    private fun getPureChapterName(chapterName: String?): String {
         return if (chapterName == null) "" else StringUtils.fullToHalf(chapterName)
-            .replace("\\s".toRegex(), "")
-            .replace("^第.*?章|[(\\[][^()\\[\\]]{2,}[)\\]]$".toRegex(), "")
-            .replace(
-                "[^\\w\\u4E00-\\u9FEF〇\\u3400-\\u4DBF\\u20000-\\u2A6DF\\u2A700-\\u2EBEF]".toRegex(),
-                ""
-            )
+            .replace(regexA, "")
+            .replace(regexB, "")
+            .replace(regexOther, "")
     }
 
     private var bookName: String? = null
diff --git a/app/src/main/java/io/legado/app/help/DefaultData.kt b/app/src/main/java/io/legado/app/help/DefaultData.kt
new file mode 100644
index 000000000..d1c016b90
--- /dev/null
+++ b/app/src/main/java/io/legado/app/help/DefaultData.kt
@@ -0,0 +1,47 @@
+package io.legado.app.help
+
+import io.legado.app.App
+import io.legado.app.data.entities.HttpTTS
+import io.legado.app.data.entities.TxtTocRule
+import io.legado.app.utils.GSON
+import io.legado.app.utils.fromJsonArray
+import java.io.File
+
+object DefaultData {
+
+    const val httpTtsFileName = "httpTTS.json"
+    const val txtTocRuleFileName = "txtTocRule.json"
+
+    val defaultHttpTTS by lazy {
+        val json =
+            String(
+                App.INSTANCE.assets.open("defaultData${File.separator}$httpTtsFileName")
+                    .readBytes()
+            )
+        GSON.fromJsonArray<HttpTTS>(json)!!
+    }
+
+    val defaultReadConfigs by lazy {
+        val json = String(
+            App.INSTANCE.assets.open("defaultData${File.separator}${ReadBookConfig.configFileName}")
+                .readBytes()
+        )
+        GSON.fromJsonArray<ReadBookConfig.Config>(json)!!
+    }
+
+    val defaultTxtTocRules by lazy {
+        val json = String(
+            App.INSTANCE.assets.open("defaultData${File.separator}$txtTocRuleFileName")
+                .readBytes()
+        )
+        GSON.fromJsonArray<TxtTocRule>(json)!!
+    }
+
+    val defaultThemeConfigs by lazy {
+        val json = String(
+            App.INSTANCE.assets.open("defaultData${File.separator}${ThemeConfig.configFileName}")
+                .readBytes()
+        )
+        GSON.fromJsonArray<ThemeConfig.Config>(json)!!
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/help/DefaultValueHelp.kt b/app/src/main/java/io/legado/app/help/DefaultValueHelp.kt
deleted file mode 100644
index 49338e960..000000000
--- a/app/src/main/java/io/legado/app/help/DefaultValueHelp.kt
+++ /dev/null
@@ -1,19 +0,0 @@
-package io.legado.app.help
-
-import io.legado.app.App
-import io.legado.app.data.entities.HttpTTS
-import io.legado.app.utils.GSON
-import io.legado.app.utils.fromJsonArray
-
-object DefaultValueHelp {
-
-
-    fun initHttpTTS() {
-        val json = String(App.INSTANCE.assets.open("httpTTS.json").readBytes())
-        GSON.fromJsonArray<HttpTTS>(json)?.let {
-            App.db.httpTTSDao().insert(*it.toTypedArray())
-        }
-    }
-
-
-}
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/help/EventMessage.kt b/app/src/main/java/io/legado/app/help/EventMessage.kt
index fe9c80994..9e2606ea5 100644
--- a/app/src/main/java/io/legado/app/help/EventMessage.kt
+++ b/app/src/main/java/io/legado/app/help/EventMessage.kt
@@ -2,8 +2,7 @@ package io.legado.app.help
 
 import android.text.TextUtils
 
-import java.util.Arrays
-
+@Suppress("unused")
 class EventMessage {
 
     var what: Int?=null
diff --git a/app/src/main/java/io/legado/app/help/IntentHelp.kt b/app/src/main/java/io/legado/app/help/IntentHelp.kt
index d7ed03af1..05b580272 100644
--- a/app/src/main/java/io/legado/app/help/IntentHelp.kt
+++ b/app/src/main/java/io/legado/app/help/IntentHelp.kt
@@ -7,6 +7,7 @@ import android.os.Bundle
 import io.legado.app.R
 import org.jetbrains.anko.toast
 
+@Suppress("unused")
 object IntentHelp {
 
 
diff --git a/app/src/main/java/io/legado/app/help/LayoutManager.kt b/app/src/main/java/io/legado/app/help/LayoutManager.kt
index e633993c7..79b54bb0c 100644
--- a/app/src/main/java/io/legado/app/help/LayoutManager.kt
+++ b/app/src/main/java/io/legado/app/help/LayoutManager.kt
@@ -6,6 +6,7 @@ import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import androidx.recyclerview.widget.StaggeredGridLayoutManager
 
+@Suppress("unused")
 object LayoutManager {
 
     interface LayoutManagerFactory {
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 94eb04ee5..9ad5a9250 100644
--- a/app/src/main/java/io/legado/app/help/ReadBookConfig.kt
+++ b/app/src/main/java/io/legado/app/help/ReadBookConfig.kt
@@ -26,10 +26,6 @@ object ReadBookConfig {
     val shareConfigFilePath = FileUtils.getPath(App.INSTANCE.filesDir, shareConfigFileName)
     val configList: ArrayList<Config> = arrayListOf()
     lateinit var shareConfig: Config
-    private val defaultConfigs by lazy {
-        val json = String(App.INSTANCE.assets.open(configFileName).readBytes())
-        GSON.fromJsonArray<Config>(json)!!
-    }
     var durConfig
         get() = getConfig(styleSelect)
         set(value) {
@@ -68,7 +64,7 @@ object ReadBookConfig {
                 e.printStackTrace()
             }
         }
-        (configs ?: defaultConfigs).let {
+        (configs ?: DefaultData.defaultReadConfigs).let {
             configList.clear()
             configList.addAll(it)
         }
@@ -131,7 +127,7 @@ object ReadBookConfig {
     }
 
     private fun resetAll() {
-        defaultConfigs.let {
+        DefaultData.defaultReadConfigs.let {
             configList.clear()
             configList.addAll(it)
             save()
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 5061d129f..44948e17c 100644
--- a/app/src/main/java/io/legado/app/help/ThemeConfig.kt
+++ b/app/src/main/java/io/legado/app/help/ThemeConfig.kt
@@ -13,10 +13,7 @@ import java.io.File
 object ThemeConfig {
     const val configFileName = "themeConfig.json"
     val configFilePath = FileUtils.getPath(App.INSTANCE.filesDir, configFileName)
-    private val defaultConfigs by lazy {
-        val json = String(App.INSTANCE.assets.open(configFileName).readBytes())
-        GSON.fromJsonArray<Config>(json)!!
-    }
+
     val configList = arrayListOf<Config>()
 
     init {
@@ -24,7 +21,7 @@ object ThemeConfig {
     }
 
     fun upConfig() {
-        (getConfigs() ?: defaultConfigs).let {
+        (getConfigs() ?: DefaultData.defaultThemeConfigs).let {
             configList.clear()
             configList.addAll(it)
         }
diff --git a/app/src/main/java/io/legado/app/help/coroutine/CompositeCoroutine.kt b/app/src/main/java/io/legado/app/help/coroutine/CompositeCoroutine.kt
index 1eb1102ba..14c123378 100644
--- a/app/src/main/java/io/legado/app/help/coroutine/CompositeCoroutine.kt
+++ b/app/src/main/java/io/legado/app/help/coroutine/CompositeCoroutine.kt
@@ -1,5 +1,6 @@
 package io.legado.app.help.coroutine
 
+@Suppress("unused")
 class CompositeCoroutine : CoroutineContainer {
 
     private var resources: HashSet<Coroutine<*>>? = null
diff --git a/app/src/main/java/io/legado/app/help/coroutine/Coroutine.kt b/app/src/main/java/io/legado/app/help/coroutine/Coroutine.kt
index 0811eee10..a31c9d1e0 100644
--- a/app/src/main/java/io/legado/app/help/coroutine/Coroutine.kt
+++ b/app/src/main/java/io/legado/app/help/coroutine/Coroutine.kt
@@ -5,6 +5,7 @@ import kotlinx.coroutines.*
 import kotlin.coroutines.CoroutineContext
 
 
+@Suppress("unused")
 class Coroutine<T>(
     val scope: CoroutineScope,
     context: CoroutineContext = Dispatchers.IO,
diff --git a/app/src/main/java/io/legado/app/help/http/CookieStore.kt b/app/src/main/java/io/legado/app/help/http/CookieStore.kt
index 067435ddb..2f2bfaaec 100644
--- a/app/src/main/java/io/legado/app/help/http/CookieStore.kt
+++ b/app/src/main/java/io/legado/app/help/http/CookieStore.kt
@@ -1,3 +1,5 @@
+@file:Suppress("unused")
+
 package io.legado.app.help.http
 
 import android.text.TextUtils
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 1d9252164..3728f4819 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
@@ -112,7 +112,7 @@ object HttpHelper {
         proxy: String? = null
     ): Retrofit {
         val r = Regex("(http|socks4|socks5)://(.*):(\\d{2,5})(@.*@.*)?")
-        val ms = proxy?.let { r.findAll(it) };
+        val ms = proxy?.let { r.findAll(it) }
         val group = ms?.first()
         var type = "direct"     //直接连接
         var host = "127.0.0.1"  //代理服务器hostname
@@ -135,9 +135,9 @@ object HttpHelper {
         val builder = client.newBuilder()
         if (type != "direct" && host != "") {
             if (type == "http") {
-                builder.proxy(Proxy(Proxy.Type.HTTP, InetSocketAddress(host, port)));
+                builder.proxy(Proxy(Proxy.Type.HTTP, InetSocketAddress(host, port)))
             } else {
-                builder.proxy(Proxy(Proxy.Type.SOCKS, InetSocketAddress(host, port)));
+                builder.proxy(Proxy(Proxy.Type.SOCKS, InetSocketAddress(host, port)))
             }
             if (username != "" && password != "") {
                 builder.proxyAuthenticator { _, response -> //设置代理服务器账号密码
diff --git a/app/src/main/java/io/legado/app/help/http/SSLHelper.kt b/app/src/main/java/io/legado/app/help/http/SSLHelper.kt
index 800304b62..52a131c71 100644
--- a/app/src/main/java/io/legado/app/help/http/SSLHelper.kt
+++ b/app/src/main/java/io/legado/app/help/http/SSLHelper.kt
@@ -12,6 +12,7 @@ import java.security.cert.CertificateFactory
 import java.security.cert.X509Certificate
 import javax.net.ssl.*
 
+@Suppress("unused")
 object SSLHelper {
 
     /**
diff --git a/app/src/main/java/io/legado/app/help/permission/Permissions.kt b/app/src/main/java/io/legado/app/help/permission/Permissions.kt
index 236691f7f..978541f69 100644
--- a/app/src/main/java/io/legado/app/help/permission/Permissions.kt
+++ b/app/src/main/java/io/legado/app/help/permission/Permissions.kt
@@ -1,5 +1,6 @@
 package io.legado.app.help.permission
 
+@Suppress("unused")
 object Permissions {
 
     const val READ_CALENDAR = "android.permission.READ_CALENDAR"
diff --git a/app/src/main/java/io/legado/app/help/permission/PermissionsCompat.kt b/app/src/main/java/io/legado/app/help/permission/PermissionsCompat.kt
index 17104108b..1d118fd0e 100644
--- a/app/src/main/java/io/legado/app/help/permission/PermissionsCompat.kt
+++ b/app/src/main/java/io/legado/app/help/permission/PermissionsCompat.kt
@@ -5,6 +5,7 @@ import androidx.appcompat.app.AppCompatActivity
 import androidx.fragment.app.Fragment
 import java.util.*
 
+@Suppress("unused")
 class PermissionsCompat private constructor() {
 
     private var request: Request? = null
@@ -16,11 +17,11 @@ class PermissionsCompat private constructor() {
     companion object {
         // 检查权限, 如果已经拥有返回 true
         fun check(activity: AppCompatActivity, vararg permissions: String): Boolean {
-            var request = Request(activity)
-            var pers = ArrayList<String>()
+            val request = Request(activity)
+            val pers = ArrayList<String>()
             pers.addAll(listOf(*permissions))
-            var data = request.getDeniedPermissions(pers.toTypedArray())
-            return data == null;
+            val data = request.getDeniedPermissions(pers.toTypedArray())
+            return data == null
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/help/storage/Backup.kt b/app/src/main/java/io/legado/app/help/storage/Backup.kt
index 6e6cb6791..d0ecac945 100644
--- a/app/src/main/java/io/legado/app/help/storage/Backup.kt
+++ b/app/src/main/java/io/legado/app/help/storage/Backup.kt
@@ -5,6 +5,7 @@ import android.net.Uri
 import androidx.documentfile.provider.DocumentFile
 import io.legado.app.App
 import io.legado.app.constant.PreferKey
+import io.legado.app.help.DefaultData
 import io.legado.app.help.ReadBookConfig
 import io.legado.app.help.ThemeConfig
 import io.legado.app.help.coroutine.Coroutine
@@ -31,9 +32,9 @@ object Backup {
             "rssSource.json",
             "rssStar.json",
             "replaceRule.json",
-            "txtTocRule.json",
             "readRecord.json",
-            "httpTTS.json",
+            DefaultData.txtTocRuleFileName,
+            DefaultData.httpTtsFileName,
             ReadBookConfig.configFileName,
             ReadBookConfig.shareConfigFileName,
             ThemeConfig.configFileName,
@@ -62,9 +63,9 @@ object Backup {
                 writeListToJson(App.db.rssSourceDao().all, "rssSource.json", backupPath)
                 writeListToJson(App.db.rssStarDao().all, "rssStar.json", backupPath)
                 writeListToJson(App.db.replaceRuleDao().all, "replaceRule.json", backupPath)
-                writeListToJson(App.db.txtTocRule().all, "txtTocRule.json", backupPath)
                 writeListToJson(App.db.readRecordDao().all, "readRecord.json", backupPath)
-                writeListToJson(App.db.httpTTSDao().all, "httpTTS.json", backupPath)
+                writeListToJson(App.db.txtTocRule().all, DefaultData.txtTocRuleFileName, backupPath)
+                writeListToJson(App.db.httpTTSDao().all, DefaultData.httpTtsFileName, backupPath)
                 GSON.toJson(ReadBookConfig.configList).let {
                     FileUtils.createFileIfNotExist(backupPath + File.separator + ReadBookConfig.configFileName)
                         .writeText(it)
diff --git a/app/src/main/java/io/legado/app/help/storage/ImportOldData.kt b/app/src/main/java/io/legado/app/help/storage/ImportOldData.kt
index a1741c845..6648363df 100644
--- a/app/src/main/java/io/legado/app/help/storage/ImportOldData.kt
+++ b/app/src/main/java/io/legado/app/help/storage/ImportOldData.kt
@@ -100,7 +100,7 @@ object ImportOldData {
         return bookSources.size
     }
 
-    fun importOldReplaceRule(json: String): Int {
+    private fun importOldReplaceRule(json: String): Int {
         val rules = OldReplace.jsonToReplaceRules(json)
         App.db.replaceRuleDao().insert(*rules.toTypedArray())
         return rules.size
diff --git a/app/src/main/java/io/legado/app/help/storage/OldRule.kt b/app/src/main/java/io/legado/app/help/storage/OldRule.kt
index 83084d5f3..616d0d359 100644
--- a/app/src/main/java/io/legado/app/help/storage/OldRule.kt
+++ b/app/src/main/java/io/legado/app/help/storage/OldRule.kt
@@ -9,6 +9,7 @@ import io.legado.app.help.storage.Restore.jsonPath
 import io.legado.app.utils.*
 import java.util.regex.Pattern
 
+@Suppress("RegExpRedundantEscape")
 object OldRule {
     private val headerPattern = Pattern.compile("@Header:\\{.+?\\}", Pattern.CASE_INSENSITIVE)
     private val jsPattern = Pattern.compile("\\{\\{.+?\\}\\}", Pattern.CASE_INSENSITIVE)
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 174367557..3d376ade4 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
@@ -13,10 +13,7 @@ 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.AppConfig
-import io.legado.app.help.LauncherIconHelp
-import io.legado.app.help.ReadBookConfig
-import io.legado.app.help.ThemeConfig
+import io.legado.app.help.*
 import io.legado.app.service.help.ReadBook
 import io.legado.app.ui.book.read.page.provider.ChapterProvider
 import io.legado.app.utils.*
@@ -81,7 +78,7 @@ object Restore {
                     for (fileName in Backup.backupFileNames) {
                         if (doc.name == fileName) {
                             DocumentUtils.readText(context, doc.uri)?.let {
-                                FileUtils.createFileIfNotExist(Backup.backupPath + File.separator + fileName)
+                                FileUtils.createFileIfNotExist("${Backup.backupPath}${File.separator}$fileName")
                                     .writeText(it)
                             }
                         }
@@ -94,7 +91,7 @@ object Restore {
                         FileUtils.getFile(file, fileName).let {
                             if (it.exists()) {
                                 it.copyTo(
-                                    FileUtils.createFileIfNotExist(Backup.backupPath + File.separator + fileName),
+                                    FileUtils.createFileIfNotExist("${Backup.backupPath}${File.separator}$fileName"),
                                     true
                                 )
                             }
@@ -132,9 +129,12 @@ object Restore {
             fileToListT<ReplaceRule>(path, "replaceRule.json")?.let {
                 App.db.replaceRuleDao().insert(*it.toTypedArray())
             }
-            fileToListT<TxtTocRule>(path, "txtTocRule.json")?.let {
+            fileToListT<TxtTocRule>(path, DefaultData.txtTocRuleFileName)?.let {
                 App.db.txtTocRule().insert(*it.toTypedArray())
             }
+            fileToListT<HttpTTS>(path, DefaultData.httpTtsFileName)?.let {
+                App.db.httpTTSDao().insert(*it.toTypedArray())
+            }
             fileToListT<ReadRecord>(path, "readRecord.json")?.let {
                 it.forEach { readRecord ->
                     //判断是不是本机记录
@@ -149,9 +149,6 @@ object Restore {
                     }
                 }
             }
-            fileToListT<HttpTTS>(path, "httpTTS.json")?.let {
-                App.db.httpTTSDao().insert(*it.toTypedArray())
-            }
         }
     }
 
@@ -159,7 +156,7 @@ object Restore {
         withContext(IO) {
             try {
                 val file =
-                    FileUtils.createFileIfNotExist(path + File.separator + ThemeConfig.configFileName)
+                    FileUtils.createFileIfNotExist("$path${File.separator}${ThemeConfig.configFileName}")
                 if (file.exists()) {
                     FileUtils.deleteFile(ThemeConfig.configFilePath)
                     file.copyTo(File(ThemeConfig.configFilePath))
@@ -171,7 +168,7 @@ object Restore {
             if (!ignoreReadConfig) {
                 try {
                     val file =
-                        FileUtils.createFileIfNotExist(path + File.separator + ReadBookConfig.configFileName)
+                        FileUtils.createFileIfNotExist("$path${File.separator}${ReadBookConfig.configFileName}")
                     if (file.exists()) {
                         FileUtils.deleteFile(ReadBookConfig.configFilePath)
                         file.copyTo(File(ReadBookConfig.configFilePath))
@@ -182,7 +179,7 @@ object Restore {
                 }
                 try {
                     val file =
-                        FileUtils.createFileIfNotExist(path + File.separator + ReadBookConfig.shareConfigFileName)
+                        FileUtils.createFileIfNotExist("$path${File.separator}${ReadBookConfig.shareConfigFileName}")
                     if (file.exists()) {
                         FileUtils.deleteFile(ReadBookConfig.shareConfigFilePath)
                         file.copyTo(File(ReadBookConfig.shareConfigFilePath))
diff --git a/app/src/main/java/io/legado/app/lib/theme/ATH.kt b/app/src/main/java/io/legado/app/lib/theme/ATH.kt
index f69c5d40a..a7a3bd6d7 100644
--- a/app/src/main/java/io/legado/app/lib/theme/ATH.kt
+++ b/app/src/main/java/io/legado/app/lib/theme/ATH.kt
@@ -30,6 +30,7 @@ import org.jetbrains.anko.backgroundColor
 /**
  * @author Karim Abou Zeid (kabouzeid)
  */
+@Suppress("unused", "MemberVisibilityCanBePrivate")
 object ATH {
 
     @SuppressLint("CommitPrefEdits")
diff --git a/app/src/main/java/io/legado/app/lib/theme/DrawableUtils.kt b/app/src/main/java/io/legado/app/lib/theme/DrawableUtils.kt
index 660448088..d1bf3c499 100644
--- a/app/src/main/java/io/legado/app/lib/theme/DrawableUtils.kt
+++ b/app/src/main/java/io/legado/app/lib/theme/DrawableUtils.kt
@@ -11,6 +11,7 @@ import androidx.core.graphics.drawable.DrawableCompat
 /**
  * @author Karim Abou Zeid (kabouzeid)
  */
+@Suppress("unused")
 object DrawableUtils {
 
     fun createTransitionDrawable(@ColorInt startColor: Int, @ColorInt endColor: Int): TransitionDrawable {
diff --git a/app/src/main/java/io/legado/app/lib/theme/MaterialValueHelper.kt b/app/src/main/java/io/legado/app/lib/theme/MaterialValueHelper.kt
index 018e3dd60..5dadc5d85 100644
--- a/app/src/main/java/io/legado/app/lib/theme/MaterialValueHelper.kt
+++ b/app/src/main/java/io/legado/app/lib/theme/MaterialValueHelper.kt
@@ -1,3 +1,5 @@
+@file:Suppress("unused")
+
 package io.legado.app.lib.theme
 
 import android.annotation.SuppressLint
diff --git a/app/src/main/java/io/legado/app/lib/theme/NavigationViewUtils.kt b/app/src/main/java/io/legado/app/lib/theme/NavigationViewUtils.kt
index c199ba855..28def35f1 100644
--- a/app/src/main/java/io/legado/app/lib/theme/NavigationViewUtils.kt
+++ b/app/src/main/java/io/legado/app/lib/theme/NavigationViewUtils.kt
@@ -8,6 +8,7 @@ import com.google.android.material.navigation.NavigationView
 /**
  * @author Karim Abou Zeid (kabouzeid)
  */
+@Suppress("unused")
 object NavigationViewUtils {
 
     fun setItemIconColors(navigationView: NavigationView, @ColorInt normalColor: Int, @ColorInt selectedColor: Int) {
diff --git a/app/src/main/java/io/legado/app/lib/theme/Selector.kt b/app/src/main/java/io/legado/app/lib/theme/Selector.kt
index 89a71198b..f98508b62 100644
--- a/app/src/main/java/io/legado/app/lib/theme/Selector.kt
+++ b/app/src/main/java/io/legado/app/lib/theme/Selector.kt
@@ -13,6 +13,7 @@ import androidx.annotation.DrawableRes
 import androidx.annotation.IntDef
 import androidx.core.content.ContextCompat
 
+@Suppress("unused")
 object Selector {
     fun shapeBuild(): ShapeSelector {
         return ShapeSelector()
@@ -260,7 +261,8 @@ object Selector {
      * @author hjy
      * created at 2017/12/11 22:34
      */
-    class DrawableSelector constructor() {
+    @Suppress("MemberVisibilityCanBePrivate")
+    class DrawableSelector {
 
         private var mDefaultDrawable: Drawable? = null
         private var mDisabledDrawable: Drawable? = null
@@ -355,7 +357,7 @@ object Selector {
      * @author hjy
      * created at 2017/12/11 22:26
      */
-    class ColorSelector constructor() {
+    class ColorSelector {
 
         private var mDefaultColor: Int = 0
         private var mDisabledColor: Int = 0
diff --git a/app/src/main/java/io/legado/app/lib/theme/ThemeStore.kt b/app/src/main/java/io/legado/app/lib/theme/ThemeStore.kt
index 92ce315ed..182db2d40 100644
--- a/app/src/main/java/io/legado/app/lib/theme/ThemeStore.kt
+++ b/app/src/main/java/io/legado/app/lib/theme/ThemeStore.kt
@@ -16,6 +16,7 @@ import io.legado.app.utils.ColorUtils
 /**
  * @author Aidan Follestad (afollestad), Karim Abou Zeid (kabouzeid)
  */
+@Suppress("unused")
 class ThemeStore @SuppressLint("CommitPrefEdits")
 private constructor(private val mContext: Context) : ThemeStoreInterface {
     private val mEditor: SharedPreferences.Editor
diff --git a/app/src/main/java/io/legado/app/lib/theme/TintHelper.kt b/app/src/main/java/io/legado/app/lib/theme/TintHelper.kt
index 76313cd46..a719cc1b1 100644
--- a/app/src/main/java/io/legado/app/lib/theme/TintHelper.kt
+++ b/app/src/main/java/io/legado/app/lib/theme/TintHelper.kt
@@ -23,6 +23,7 @@ import io.legado.app.utils.ColorUtils
 /**
  * @author afollestad, plusCubed
  */
+@Suppress("MemberVisibilityCanBePrivate")
 object TintHelper {
 
     @SuppressLint("PrivateResource")
@@ -37,7 +38,10 @@ object TintHelper {
         )
     }
 
-    private fun getDisabledColorStateList(@ColorInt normal: Int, @ColorInt disabled: Int): ColorStateList {
+    private fun getDisabledColorStateList(
+        @ColorInt normal: Int,
+        @ColorInt disabled: Int
+    ): ColorStateList {
         return ColorStateList(
             arrayOf(
                 intArrayOf(-android.R.attr.state_enabled),
@@ -61,48 +65,52 @@ object TintHelper {
         )
 
         val sl: ColorStateList
-        if (view is Button) {
-            sl = getDisabledColorStateList(color, disabled)
-            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP && view.getBackground() is RippleDrawable) {
-                val rd = view.getBackground() as RippleDrawable
-                rd.setColor(ColorStateList.valueOf(rippleColor))
-            }
+        when (view) {
+            is Button -> {
+                sl = getDisabledColorStateList(color, disabled)
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP && view.getBackground() is RippleDrawable) {
+                    val rd = view.getBackground() as RippleDrawable
+                    rd.setColor(ColorStateList.valueOf(rippleColor))
+                }
 
-            // Disabled text color state for buttons, may get overridden later by ATE tags
-            view.setTextColor(
-                getDisabledColorStateList(
-                    textColor,
-                    ContextCompat.getColor(
-                        view.getContext(),
-                        if (useDarkTheme) R.color.ate_button_text_disabled_dark else R.color.ate_button_text_disabled_light
+                // Disabled text color state for buttons, may get overridden later by ATE tags
+                view.setTextColor(
+                    getDisabledColorStateList(
+                        textColor,
+                        ContextCompat.getColor(
+                            view.getContext(),
+                            if (useDarkTheme) R.color.ate_button_text_disabled_dark else R.color.ate_button_text_disabled_light
+                        )
                     )
                 )
-            )
-        } else if (view is FloatingActionButton) {
-            // FloatingActionButton doesn't support disabled state?
-            sl = ColorStateList(
-                arrayOf(
-                    intArrayOf(-android.R.attr.state_pressed),
-                    intArrayOf(android.R.attr.state_pressed)
-                ), intArrayOf(color, pressed)
-            )
+            }
+            is FloatingActionButton -> {
+                // FloatingActionButton doesn't support disabled state?
+                sl = ColorStateList(
+                    arrayOf(
+                        intArrayOf(-android.R.attr.state_pressed),
+                        intArrayOf(android.R.attr.state_pressed)
+                    ), intArrayOf(color, pressed)
+                )
 
-            view.rippleColor = rippleColor
-            view.backgroundTintList = sl
-            if (view.drawable != null)
-                view.setImageDrawable(createTintedDrawable(view.drawable, textColor))
-            return
-        } else {
-            sl = ColorStateList(
-                arrayOf(
-                    intArrayOf(-android.R.attr.state_enabled),
-                    intArrayOf(android.R.attr.state_enabled),
-                    intArrayOf(android.R.attr.state_enabled, android.R.attr.state_pressed),
-                    intArrayOf(android.R.attr.state_enabled, android.R.attr.state_activated),
-                    intArrayOf(android.R.attr.state_enabled, android.R.attr.state_checked)
-                ),
-                intArrayOf(disabled, color, pressed, activated, activated)
-            )
+                view.rippleColor = rippleColor
+                view.backgroundTintList = sl
+                if (view.drawable != null)
+                    view.setImageDrawable(createTintedDrawable(view.drawable, textColor))
+                return
+            }
+            else -> {
+                sl = ColorStateList(
+                    arrayOf(
+                        intArrayOf(-android.R.attr.state_enabled),
+                        intArrayOf(android.R.attr.state_enabled),
+                        intArrayOf(android.R.attr.state_enabled, android.R.attr.state_pressed),
+                        intArrayOf(android.R.attr.state_enabled, android.R.attr.state_activated),
+                        intArrayOf(android.R.attr.state_enabled, android.R.attr.state_checked)
+                    ),
+                    intArrayOf(disabled, color, pressed, activated, activated)
+                )
+            }
         }
 
         var drawable: Drawable? = view.background
@@ -386,7 +394,11 @@ object TintHelper {
         return createTintedDrawable(from, sl)
     }
 
-    fun setTint(switchView: Switch, @ColorInt color: Int, useDarker: Boolean) {
+    fun setTint(
+        @SuppressLint("UseSwitchCompatOrMaterialCode") switchView: Switch,
+        @ColorInt color: Int,
+        useDarker: Boolean
+    ) {
         if (switchView.trackDrawable != null) {
             switchView.trackDrawable = modifySwitchDrawable(
                 switchView.context,
diff --git a/app/src/main/java/io/legado/app/lib/theme/ViewUtils.kt b/app/src/main/java/io/legado/app/lib/theme/ViewUtils.kt
index f3afa243c..bcbb794a1 100644
--- a/app/src/main/java/io/legado/app/lib/theme/ViewUtils.kt
+++ b/app/src/main/java/io/legado/app/lib/theme/ViewUtils.kt
@@ -10,6 +10,7 @@ import androidx.annotation.ColorInt
 /**
  * @author Karim Abou Zeid (kabouzeid)
  */
+@Suppress("unused")
 object ViewUtils {
 
     fun removeOnGlobalLayoutListener(v: View, listener: ViewTreeObserver.OnGlobalLayoutListener) {
diff --git a/app/src/main/java/io/legado/app/lib/webdav/WebDav.kt b/app/src/main/java/io/legado/app/lib/webdav/WebDav.kt
index 03fc0d974..ab4f3303c 100644
--- a/app/src/main/java/io/legado/app/lib/webdav/WebDav.kt
+++ b/app/src/main/java/io/legado/app/lib/webdav/WebDav.kt
@@ -14,6 +14,7 @@ import java.net.URL
 import java.net.URLEncoder
 import java.util.*
 
+@Suppress("unused")
 class WebDav(urlStr: String) {
     companion object {
         // 指定返回哪些属性
@@ -60,9 +61,9 @@ class WebDav(urlStr: String) {
             return field
         }
 
-    fun getPath() = url.toString()
+    val path get() = url.toString()
 
-    fun getHost() = url.host
+    val host: String? get() = url.host
 
     /**
      * 填充文件信息。实例化WebDAVFile对象时，并没有将远程文件的信息填充到实例中。需要手动填充！
diff --git a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByJSonPath.kt b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByJSonPath.kt
index e4c2829e8..85b4e1649 100644
--- a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByJSonPath.kt
+++ b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByJSonPath.kt
@@ -8,6 +8,7 @@ import io.legado.app.utils.splitNotBlank
 import java.util.*
 import java.util.regex.Pattern
 
+@Suppress("RegExpRedundantEscape")
 @Keep
 class AnalyzeByJSonPath {
     private lateinit var ctx: ReadContext
diff --git a/app/src/main/java/io/legado/app/model/localBook/AnalyzeTxtFile.kt b/app/src/main/java/io/legado/app/model/localBook/AnalyzeTxtFile.kt
index 6dfa74594..77689d8a5 100644
--- a/app/src/main/java/io/legado/app/model/localBook/AnalyzeTxtFile.kt
+++ b/app/src/main/java/io/legado/app/model/localBook/AnalyzeTxtFile.kt
@@ -5,6 +5,7 @@ import io.legado.app.App
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookChapter
 import io.legado.app.data.entities.TxtTocRule
+import io.legado.app.help.DefaultData
 import io.legado.app.utils.*
 import java.io.File
 import java.io.RandomAccessFile
@@ -281,24 +282,17 @@ class AnalyzeTxtFile {
         }
 
         private fun getTocRules(): List<TxtTocRule> {
-            val rules = App.db.txtTocRule().enabled
+            var rules = App.db.txtTocRule().enabled
             if (rules.isEmpty()) {
-                return getDefaultEnabledRules()
+                rules = DefaultData.defaultTxtTocRules.apply {
+                    App.db.txtTocRule().insert(*this.toTypedArray())
+                }.filter {
+                    it.enable
+                }
             }
             return rules
         }
 
-        fun getDefaultEnabledRules(): List<TxtTocRule> {
-            App.INSTANCE.assets.open("txtTocRule.json").readBytes().let { byteArray ->
-                GSON.fromJsonArray<TxtTocRule>(String(byteArray))?.let { txtTocRules ->
-                    App.db.txtTocRule().insert(*txtTocRules.toTypedArray())
-                    return txtTocRules.filter {
-                        it.enable
-                    }
-                }
-            }
-            return emptyList()
-        }
     }
 
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/model/rss/RssParserDefault.kt b/app/src/main/java/io/legado/app/model/rss/RssParserDefault.kt
index 2a02c2bdc..2cb3d6c17 100644
--- a/app/src/main/java/io/legado/app/model/rss/RssParserDefault.kt
+++ b/app/src/main/java/io/legado/app/model/rss/RssParserDefault.kt
@@ -8,6 +8,7 @@ import org.xmlpull.v1.XmlPullParserFactory
 import java.io.IOException
 import java.io.StringReader
 
+@Suppress("unused")
 object RssParserDefault {
 
     @Throws(XmlPullParserException::class, IOException::class)
diff --git a/app/src/main/java/io/legado/app/receiver/TimeBatteryReceiver.kt b/app/src/main/java/io/legado/app/receiver/TimeBatteryReceiver.kt
index ce2e04fbe..73737aa79 100644
--- a/app/src/main/java/io/legado/app/receiver/TimeBatteryReceiver.kt
+++ b/app/src/main/java/io/legado/app/receiver/TimeBatteryReceiver.kt
@@ -25,15 +25,13 @@ class TimeBatteryReceiver : BroadcastReceiver() {
     }
 
     override fun onReceive(context: Context?, intent: Intent?) {
-        intent?.action?.let {
-            when (it) {
-                Intent.ACTION_TIME_TICK -> {
-                    postEvent(EventBus.TIME_CHANGED, "")
-                }
-                Intent.ACTION_BATTERY_CHANGED -> {
-                    val level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, -1)
-                    postEvent(EventBus.BATTERY_CHANGED, level)
-                }
+        when (intent?.action) {
+            Intent.ACTION_TIME_TICK -> {
+                postEvent(EventBus.TIME_CHANGED, "")
+            }
+            Intent.ACTION_BATTERY_CHANGED -> {
+                val level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, -1)
+                postEvent(EventBus.BATTERY_CHANGED, level)
             }
         }
     }
diff --git a/app/src/main/java/io/legado/app/service/help/CacheBook.kt b/app/src/main/java/io/legado/app/service/help/CacheBook.kt
index 18b68b332..3e96bd616 100644
--- a/app/src/main/java/io/legado/app/service/help/CacheBook.kt
+++ b/app/src/main/java/io/legado/app/service/help/CacheBook.kt
@@ -77,23 +77,16 @@ object CacheBook {
         downloadMap[book.bookUrl]?.add(chapter.index)
         webBook.getContent(book, chapter)
             .onSuccess(IO) { content ->
+                if (content.isNotBlank()) {
+                    BookHelp.saveContent(book, chapter, content)
+                }
                 if (ReadBook.book?.bookUrl == book.bookUrl) {
-                    if (content.isEmpty()) {
-                        ReadBook.contentLoadFinish(
-                            book,
-                            chapter,
-                            App.INSTANCE.getString(R.string.content_empty),
-                            resetPageOffset = resetPageOffset
-                        )
-                    } else {
-                        BookHelp.saveContent(book, chapter, content)
-                        ReadBook.contentLoadFinish(
-                            book,
-                            chapter,
-                            content,
-                            resetPageOffset = resetPageOffset
-                        )
-                    }
+                    ReadBook.contentLoadFinish(
+                        book,
+                        chapter,
+                        content.ifBlank { App.INSTANCE.getString(R.string.content_empty) },
+                        resetPageOffset = resetPageOffset
+                    )
                 }
             }.onError {
                 if (ReadBook.book?.bookUrl == book.bookUrl) {
diff --git a/app/src/main/java/io/legado/app/ui/book/read/config/SpeakEngineDialog.kt b/app/src/main/java/io/legado/app/ui/book/read/config/SpeakEngineDialog.kt
index 6ee1d5bda..f909bc727 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/config/SpeakEngineDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/config/SpeakEngineDialog.kt
@@ -24,11 +24,13 @@ import io.legado.app.lib.dialogs.customView
 import io.legado.app.lib.dialogs.okButton
 import io.legado.app.lib.theme.primaryColor
 import io.legado.app.service.help.ReadAloud
+import io.legado.app.ui.widget.dialog.TextDialog
 import io.legado.app.utils.*
 import kotlinx.android.synthetic.main.dialog_http_tts_edit.view.*
 import kotlinx.android.synthetic.main.dialog_recycler_view.*
 import kotlinx.android.synthetic.main.item_http_tts.view.*
 import org.jetbrains.anko.sdk27.listeners.onClick
+import java.io.File
 
 class SpeakEngineDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener {
 
@@ -126,6 +128,12 @@ class SpeakEngineDialog : BaseDialogFragment(), Toolbar.OnMenuItemClickListener
                     ReadAloud.upReadAloudClass()
                 }
             }
+            neutralButton(R.string.help) {
+                val helpStr = String(
+                    requireContext().assets.open("help${File.separator}httpTts.md").readBytes()
+                )
+                TextDialog.show(childFragmentManager, helpStr, TextDialog.MD)
+            }
         }.show().applyTint()
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/book/read/config/SpeakEngineViewModel.kt b/app/src/main/java/io/legado/app/ui/book/read/config/SpeakEngineViewModel.kt
index 490eb6efd..bc30c346b 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/config/SpeakEngineViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/config/SpeakEngineViewModel.kt
@@ -3,8 +3,8 @@ package io.legado.app.ui.book.read.config
 import android.app.Application
 import io.legado.app.App
 import io.legado.app.base.BaseViewModel
-import io.legado.app.data.entities.TxtTocRule
-import io.legado.app.help.DefaultValueHelp
+import io.legado.app.data.entities.HttpTTS
+import io.legado.app.help.DefaultData
 import io.legado.app.help.http.HttpHelper
 import io.legado.app.utils.GSON
 import io.legado.app.utils.fromJsonArray
@@ -13,15 +13,17 @@ class SpeakEngineViewModel(application: Application) : BaseViewModel(application
 
     fun importDefault() {
         execute {
-            DefaultValueHelp.initHttpTTS()
+            DefaultData.defaultHttpTTS.let {
+                App.db.httpTTSDao().insert(*it.toTypedArray())
+            }
         }
     }
 
     fun importOnLine(url: String, finally: (msg: String) -> Unit) {
         execute {
             HttpHelper.simpleGetAsync(url)?.let { json ->
-                GSON.fromJsonArray<TxtTocRule>(json)?.let {
-                    App.db.txtTocRule().insert(*it.toTypedArray())
+                GSON.fromJsonArray<HttpTTS>(json)?.let {
+                    App.db.httpTTSDao().insert(*it.toTypedArray())
                 }
             }
         }.onSuccess {
diff --git a/app/src/main/java/io/legado/app/ui/book/read/config/TocRegexViewModel.kt b/app/src/main/java/io/legado/app/ui/book/read/config/TocRegexViewModel.kt
index 140a781e4..cebc521b8 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/config/TocRegexViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/config/TocRegexViewModel.kt
@@ -4,8 +4,8 @@ import android.app.Application
 import io.legado.app.App
 import io.legado.app.base.BaseViewModel
 import io.legado.app.data.entities.TxtTocRule
+import io.legado.app.help.DefaultData
 import io.legado.app.help.http.HttpHelper
-import io.legado.app.model.localBook.AnalyzeTxtFile
 import io.legado.app.utils.GSON
 import io.legado.app.utils.fromJsonArray
 
@@ -23,7 +23,9 @@ class TocRegexViewModel(application: Application) : BaseViewModel(application) {
     fun importDefault() {
         execute {
             App.db.txtTocRule().deleteDefault()
-            AnalyzeTxtFile.getDefaultEnabledRules()
+            DefaultData.defaultTxtTocRules.let {
+                App.db.txtTocRule().insert(*it.toTypedArray())
+            }
         }
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/book/read/page/entities/TextLine.kt b/app/src/main/java/io/legado/app/ui/book/read/page/entities/TextLine.kt
index 9457bff37..7610ad9d3 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/page/entities/TextLine.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/page/entities/TextLine.kt
@@ -4,6 +4,7 @@ import android.text.TextPaint
 import io.legado.app.ui.book.read.page.provider.ChapterProvider
 import io.legado.app.ui.book.read.page.provider.ChapterProvider.textHeight
 
+@Suppress("unused")
 data class TextLine(
     var text: String = "",
     val textChars: ArrayList<TextChar> = arrayListOf(),
diff --git a/app/src/main/java/io/legado/app/ui/book/search/SearchViewModel.kt b/app/src/main/java/io/legado/app/ui/book/search/SearchViewModel.kt
index 179b2cd9b..7d5b1858a 100644
--- a/app/src/main/java/io/legado/app/ui/book/search/SearchViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/search/SearchViewModel.kt
@@ -144,7 +144,7 @@ class SearchViewModel(application: Application) : BaseViewModel(application),
                 }
             }
             if (!scope.isActive) return
-            searchBooks.sortWith(Comparator { o1, o2 ->
+            searchBooks.sortWith { o1, o2 ->
                 if (o1.name == searchKey && o2.name != searchKey) {
                     1
                 } else if (o1.name != searchKey && o2.name == searchKey) {
@@ -168,7 +168,7 @@ class SearchViewModel(application: Application) : BaseViewModel(application),
                 } else {
                     0
                 }
-            })
+            }
             if (!scope.isActive) return
             searchBooks = copyDataS
             upAdapter()
diff --git a/app/src/main/java/io/legado/app/ui/book/toc/ChapterListActivity.kt b/app/src/main/java/io/legado/app/ui/book/toc/ChapterListActivity.kt
index b595bacbe..150619ce6 100644
--- a/app/src/main/java/io/legado/app/ui/book/toc/ChapterListActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/toc/ChapterListActivity.kt
@@ -65,7 +65,7 @@ class ChapterListActivity : VMBaseActivity<ChapterListViewModel>(R.layout.activi
         return super.onCompatCreateOptionsMenu(menu)
     }
 
-    private inner class TabFragmentPageAdapter internal constructor(fm: FragmentManager) :
+    private inner class TabFragmentPageAdapter(fm: FragmentManager) :
         FragmentPagerAdapter(fm, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT) {
         override fun getItem(position: Int): Fragment {
             return when (position) {
diff --git a/app/src/main/java/io/legado/app/ui/filechooser/adapter/FileAdapter.kt b/app/src/main/java/io/legado/app/ui/filechooser/adapter/FileAdapter.kt
index 4458b692e..12c45477a 100644
--- a/app/src/main/java/io/legado/app/ui/filechooser/adapter/FileAdapter.kt
+++ b/app/src/main/java/io/legado/app/ui/filechooser/adapter/FileAdapter.kt
@@ -23,10 +23,10 @@ class FileAdapter(context: Context, val callBack: CallBack) :
     private var rootPath: String? = null
     var currentPath: String? = null
         private set
-    private val homeIcon = ConvertUtils.toDrawable(FilePickerIcon.getHOME())
-    private val upIcon = ConvertUtils.toDrawable(FilePickerIcon.getUPDIR())
-    private val folderIcon = ConvertUtils.toDrawable(FilePickerIcon.getFOLDER())
-    private val fileIcon = ConvertUtils.toDrawable(FilePickerIcon.getFILE())
+    private val homeIcon = ConvertUtils.toDrawable(FilePickerIcon.getHome())
+    private val upIcon = ConvertUtils.toDrawable(FilePickerIcon.getUpDir())
+    private val folderIcon = ConvertUtils.toDrawable(FilePickerIcon.getFolder())
+    private val fileIcon = ConvertUtils.toDrawable(FilePickerIcon.getFile())
     private val primaryTextColor = context.getPrimaryTextColor(!AppConfig.isNightTheme)
     private val disabledTextColor = context.getPrimaryDisabledTextColor(!AppConfig.isNightTheme)
 
diff --git a/app/src/main/java/io/legado/app/ui/filechooser/adapter/PathAdapter.kt b/app/src/main/java/io/legado/app/ui/filechooser/adapter/PathAdapter.kt
index 86ccf67c0..9d8cf6fab 100644
--- a/app/src/main/java/io/legado/app/ui/filechooser/adapter/PathAdapter.kt
+++ b/app/src/main/java/io/legado/app/ui/filechooser/adapter/PathAdapter.kt
@@ -17,7 +17,7 @@ class PathAdapter(context: Context, val callBack: CallBack) :
     private val paths = LinkedList<String>()
     @Suppress("DEPRECATION")
     private val sdCardDirectory = Environment.getExternalStorageDirectory().absolutePath
-    private val arrowIcon = ConvertUtils.toDrawable(FilePickerIcon.getARROW())
+    private val arrowIcon = ConvertUtils.toDrawable(FilePickerIcon.getArrow())
 
     fun getPath(position: Int): String {
         val tmp = StringBuilder("$sdCardDirectory/")
diff --git a/app/src/main/java/io/legado/app/ui/filechooser/utils/FilePickerIcon.java b/app/src/main/java/io/legado/app/ui/filechooser/utils/FilePickerIcon.java
index 6732626e4..c53ab6631 100644
--- a/app/src/main/java/io/legado/app/ui/filechooser/utils/FilePickerIcon.java
+++ b/app/src/main/java/io/legado/app/ui/filechooser/utils/FilePickerIcon.java
@@ -8,23 +8,23 @@ package io.legado.app.ui.filechooser.utils;
  */
 public class FilePickerIcon {
 
-    public static byte[] getFILE() {
+    public static byte[] getFile() {
         return FILE;
     }
 
-    public static byte[] getFOLDER() {
+    public static byte[] getFolder() {
         return FOLDER;
     }
 
-    public static byte[] getHOME() {
+    public static byte[] getHome() {
         return HOME;
     }
 
-    public static byte[] getUPDIR() {
+    public static byte[] getUpDir() {
         return UPDIR;
     }
 
-    public static byte[] getARROW() {
+    public static byte[] getArrow() {
         return ARROW;
     }
 
diff --git a/app/src/main/java/io/legado/app/ui/main/MainViewModel.kt b/app/src/main/java/io/legado/app/ui/main/MainViewModel.kt
index 8f45c4a9c..904df39e4 100644
--- a/app/src/main/java/io/legado/app/ui/main/MainViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/main/MainViewModel.kt
@@ -9,7 +9,7 @@ import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.RssSource
 import io.legado.app.help.AppConfig
 import io.legado.app.help.BookHelp
-import io.legado.app.help.DefaultValueHelp
+import io.legado.app.help.DefaultData
 import io.legado.app.help.http.HttpHelper
 import io.legado.app.help.storage.Restore
 import io.legado.app.model.webBook.WebBook
@@ -162,7 +162,9 @@ class MainViewModel(application: Application) : BaseViewModel(application) {
         execute {
             FileUtils.deleteFile(FileUtils.getPath(context.cacheDir, "Fonts"))
             if (App.db.httpTTSDao().count == 0) {
-                DefaultValueHelp.initHttpTTS()
+                DefaultData.defaultHttpTTS.let {
+                    App.db.httpTTSDao().insert(*it.toTypedArray())
+                }
             }
         }
     }
diff --git a/app/src/main/java/io/legado/app/ui/main/my/MyFragment.kt b/app/src/main/java/io/legado/app/ui/main/my/MyFragment.kt
index 20b36c065..e8eddefae 100644
--- a/app/src/main/java/io/legado/app/ui/main/my/MyFragment.kt
+++ b/app/src/main/java/io/legado/app/ui/main/my/MyFragment.kt
@@ -54,7 +54,7 @@ class MyFragment : BaseFragment(R.layout.fragment_my_config), FileChooserDialog.
     override fun onCompatOptionsItemSelected(item: MenuItem) {
         when (item.itemId) {
             R.id.menu_help -> {
-                val text = String(requireContext().assets.open("help.md").readBytes())
+                val text = String(requireContext().assets.open("help/help.md").readBytes())
                 TextDialog.show(childFragmentManager, text, TextDialog.MD)
             }
         }
diff --git a/app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt b/app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt
index 4b6d4a159..c22b8ec13 100644
--- a/app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt
@@ -32,7 +32,7 @@ open class WelcomeActivity : BaseActivity(R.layout.activity_welcome) {
 
     private fun init() {
         Coroutine.async {
-            //清楚过期数据
+            //清除过期数据
             App.db.searchBookDao()
                 .clearExpired(System.currentTimeMillis() - TimeUnit.DAYS.toMillis(1))
             //初始化简繁转换引擎
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 3141c5a86..1711a650e 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
@@ -10,6 +10,7 @@ import android.util.AttributeSet
 import androidx.annotation.ColorInt
 import androidx.appcompat.widget.AppCompatTextView
 import io.legado.app.utils.dp
+import java.io.File
 
 class BatteryView(context: Context, attrs: AttributeSet?) : AppCompatTextView(context, attrs) {
     private val batteryPaint = Paint()
@@ -22,7 +23,7 @@ class BatteryView(context: Context, attrs: AttributeSet?) : AppCompatTextView(co
         batteryPaint.strokeWidth = 1.dp.toFloat()
         batteryPaint.isAntiAlias = true
         batteryPaint.color = paint.color
-        typeface = Typeface.createFromAsset(context.assets, "number.ttf")
+        typeface = Typeface.createFromAsset(context.assets, "font${File.separator}number.ttf")
     }
 
     fun setColor(@ColorInt color: Int) {
diff --git a/app/src/main/java/io/legado/app/utils/StringExtensions.kt b/app/src/main/java/io/legado/app/utils/StringExtensions.kt
index dc53b7bc8..a5c0d365d 100644
--- a/app/src/main/java/io/legado/app/utils/StringExtensions.kt
+++ b/app/src/main/java/io/legado/app/utils/StringExtensions.kt
@@ -1,3 +1,5 @@
+@file:Suppress("unused")
+
 package io.legado.app.utils
 
 import android.net.Uri