添加应用内语言切换

app/src/main/assets/updateLog.md

@@ -5,6 +5,7 @@
 
 **2020/08/13**
 * 添加亮度调节控件显示开关
+* 添加应用内语言切换
 
 **2020/08/12**
 * 增加了Content Provider 接口支持 by [w568w](https://github.com/w568w)

app/src/main/java/io/legado/app/base/BaseActivity.kt

@@ -29,6 +29,10 @@ abstract class BaseActivity(
 ) : AppCompatActivity(),
     CoroutineScope by MainScope() {
 
+    override fun attachBaseContext(newBase: Context) {
+        super.attachBaseContext(LanguageUtils.setConfiguration(newBase))
+    }
+
     override fun onCreateView(
         parent: View?,
         name: String,

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

@@ -2,6 +2,7 @@ package io.legado.app.constant
 
 object PreferKey {
     const val versionCode = "versionCode"
+    const val language = "language"
     const val themeMode = "themeMode"
     const val hideStatusBar = "hideStatusBar"
     const val clickTurnPage = "clickTurnPage"

app/src/main/java/io/legado/app/ui/config/OtherConfigFragment.kt

@@ -117,6 +117,9 @@ class OtherConfigFragment : BasePreferenceFragment(),
             )
             PreferKey.replaceEnableDefault -> AppConfig.replaceEnableDefault =
                 App.INSTANCE.getPrefBoolean(PreferKey.replaceEnableDefault, true)
+            PreferKey.language -> {
+                postEvent(EventBus.RECREATE, "")
+            }
         }
     }
 

app/src/main/java/io/legado/app/utils/LanguageUtils.kt

@@ -0,0 +1,51 @@
+package io.legado.app.utils
+
+import android.content.Context
+import android.content.res.Configuration
+import android.content.res.Resources
+import android.os.Build
+import io.legado.app.constant.PreferKey
+import java.util.*
+
+
+object LanguageUtils {
+
+    /**
+     * 设置语言
+     */
+    fun setConfiguration(context: Context): Context {
+        val resources: Resources = context.resources
+        val targetLocale: Locale = when (context.getPrefString(PreferKey.language)) {
+            "zh" -> Locale.CHINESE
+            "tw" -> Locale.TRADITIONAL_CHINESE
+            "en" -> Locale.ENGLISH
+            else -> getSystemLocale()
+        }
+        val configuration: Configuration = resources.configuration
+        return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+            configuration.setLocale(targetLocale)
+            context.createConfigurationContext(configuration)
+        } else {
+            @Suppress("DEPRECATION")
+            configuration.locale = targetLocale
+            @Suppress("DEPRECATION")
+            resources.updateConfiguration(configuration, resources.displayMetrics)
+            context
+        }
+    }
+
+
+    /**
+     * 当前系统语言
+     */
+    private fun getSystemLocale(): Locale {
+        return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) { //7.0有多语言设置获取顶部的语言
+            Resources.getSystem().configuration.locales.get(0)
+        } else {
+            @Suppress("DEPRECATION")
+            Resources.getSystem().configuration.locale
+        }
+    }
+
+
+}

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

@@ -64,4 +64,11 @@
         <item>A屏黑</item>
     </string-array>
 
+    <string-array name="language">
+        <item>跟随系统</item>
+        <item>简体中文</item>
+        <item>繁体中文</item>
+        <item>英文</item>
+    </string-array>
+
 </resources>

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

@@ -742,4 +742,5 @@
     <string name="wrong_format">格式不对</string>
     <string name="error">错误</string>
     <string name="show_brightness_view">显示亮度调节控件</string>
+    <string name="language">语言</string>
 </resources>

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

@@ -121,4 +121,11 @@
         <item>A屏黑</item>
     </string-array>
 
+    <string-array name="language">
+        <item>跟随系统</item>
+        <item>简体中文</item>
+        <item>繁体中文</item>
+        <item>英文</item>
+    </string-array>
+
 </resources>

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

@@ -742,5 +742,6 @@
     <string name="wrong_format">格式不对</string>
     <string name="error">错误</string>
     <string name="show_brightness_view">显示亮度调节控件</string>
+    <string name="language">语言</string>
 
 </resources>

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

@@ -121,4 +121,11 @@
         <item>A屏黑</item>
     </string-array>
 
+    <string-array name="language">
+        <item>跟随系统</item>
+        <item>简体中文</item>
+        <item>繁体中文</item>
+        <item>英文</item>
+    </string-array>
+
 </resources>

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

@@ -742,4 +742,5 @@
     <string name="wrong_format">格式不对</string>
     <string name="error">错误</string>
     <string name="show_brightness_view">显示亮度调节控件</string>
+    <string name="language">语言</string>
 </resources>

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

@@ -48,4 +48,11 @@
         <item>3</item>
     </string-array>
 
+    <string-array name="language_value">
+        <item>auto</item>
+        <item>zh</item>
+        <item>tw</item>
+        <item>en</item>
+    </string-array>
+
 </resources>

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

@@ -121,4 +121,11 @@
 		<item>A屏黑</item>
 	</string-array>
 
+	<string-array name="language">
+		<item>跟随系统</item>
+		<item>简体中文</item>
+		<item>繁体中文</item>
+		<item>英文</item>
+	</string-array>
+
 </resources>

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

@@ -743,5 +743,6 @@
     <string name="wrong_format">格式不对</string>
     <string name="error">错误</string>
     <string name="show_brightness_view">显示亮度调节控件</string>
+    <string name="language">语言</string>
 
 </resources>

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

@@ -2,6 +2,13 @@
 <androidx.preference.PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto">
 
+    <io.legado.app.ui.widget.prefs.NameListPreference
+        android:key="language"
+        android:title="@string/language"
+        android:defaultValue="auto"
+        app:entries="@array/language"
+        app:entryValues="@array/language_value" />
+
     <io.legado.app.ui.widget.prefs.PreferenceCategory
         android:title="@string/main_activity"
         app:allowDividerAbove="false"