添加预加载设置

app/src/main/java/io/legado/app/constant/PreferKey.kt

@@ -64,6 +64,7 @@ object PreferKey {
     const val importKeepName = "importKeepName"
     const val screenOrientation = "screenOrientation"
     const val syncBookProgress = "syncBookProgress"
+    const val preDownload = "preDownload"
 
     const val cPrimary = "colorPrimary"
     const val cAccent = "colorAccent"

app/src/main/java/io/legado/app/help/AppConfig.kt

@@ -149,6 +149,8 @@ object AppConfig : SharedPreferences.OnSharedPreferenceChangeListener {
 
     val syncBookProgress get() = context.getPrefBoolean(PreferKey.syncBookProgress, true)
 
+    val preDownload get() = context.getPrefBoolean(PreferKey.preDownload, true)
+
     private fun getPrefUserAgent(): String {
         val ua = context.getPrefString(PreferKey.userAgent)
         if (ua.isNullOrBlank()) {

app/src/main/java/io/legado/app/service/help/ReadBook.kt

@@ -133,13 +133,15 @@ object ReadBook {
                     callBack?.upContent()
                 }
                 loadContent(durChapterIndex.plus(1), upContent, false)
+                if (AppConfig.preDownload) {
                     GlobalScope.launch(Dispatchers.IO) {
-                    for (i in 2..10) {
+                        for (i in 2..9) {
-                        delay(100)
+                            delay(1000)
                             download(durChapterIndex + i)
                         }
                     }
                 }
+            }
             saveRead()
             callBack?.upView()
             curPageChanged()
@@ -163,10 +165,12 @@ object ReadBook {
                     callBack?.upContent()
                 }
                 loadContent(durChapterIndex.minus(1), upContent, false)
+                if (AppConfig.preDownload) {
                     GlobalScope.launch(Dispatchers.IO) {
-                    for (i in -5..-2) {
+                        for (i in 2..9) {
-                        delay(100)
+                            delay(1000)
-                        download(durChapterIndex + i)
+                            download(durChapterIndex - i)
+                        }
                     }
                 }
             }

app/src/main/java/io/legado/app/ui/main/MainViewModel.kt

@@ -81,8 +81,10 @@ class MainViewModel(application: Application) : BaseViewModel(application) {
                             App.db.bookDao.update(book)
                             App.db.bookChapterDao.delByBook(book.bookUrl)
                             App.db.bookChapterDao.insert(*it.toTypedArray())
+                            if (AppConfig.preDownload) {
                                 cacheBook(webBook, book)
                             }
+                        }
                         .onError {
                             it.printStackTrace()
                         }

app/src/main/res/values-zh-rHK/strings.xml

@@ -797,5 +797,7 @@
     <string name="single_url">单URL</string>
     <string name="export_bookshelf">导出书单</string>
     <string name="import_bookshelf">导入书单</string>
+    <string name="pre_download">预下载</string>
+    <string name="pre_download_s">预先下载10章正文</string>
 
 </resources>

app/src/main/res/values-zh-rTW/strings.xml

@@ -798,5 +798,7 @@
     <string name="single_url">单URL</string>
     <string name="export_bookshelf">导出书单</string>
     <string name="import_bookshelf">导入书单</string>
+    <string name="pre_download">预下载</string>
+    <string name="pre_download_s">预先下载10章正文</string>
 
 </resources>

app/src/main/res/values-zh/strings.xml

@@ -801,5 +801,7 @@
     <string name="single_url">单URL</string>
     <string name="export_bookshelf">导出书单</string>
     <string name="import_bookshelf">导入书单</string>
+    <string name="pre_download">预下载</string>
+    <string name="pre_download_s">预先下载10章正文</string>
 
 </resources>

app/src/main/res/values/strings.xml

@@ -804,5 +804,7 @@
     <string name="single_url">单URL</string>
     <string name="export_bookshelf">导出书单</string>
     <string name="import_bookshelf">导入书单</string>
+    <string name="pre_download">预下载</string>
+    <string name="pre_download_s">预先下载10章正文</string>
 
 </resources>

app/src/main/res/xml/pref_config_other.xml

@@ -55,6 +55,12 @@
             android:key="userAgent"
             android:title="UserAgent" />
 
+        <io.legado.app.ui.widget.prefs.SwitchPreference
+            android:defaultValue="true"
+            android:key="preDownload"
+            android:title="@string/pre_download"
+            android:summary="@string/pre_download_s" />
+
         <io.legado.app.ui.widget.prefs.SwitchPreference
             android:defaultValue="true"
             android:key="replaceEnableDefault"