Android设置语言

标签：语言 locale updateConfiguration 设置 Android Configuration config Class android

应用语言的切换

单纯的切换自身应用的语言。

Resources resources = getResources();
DisplayMetrics dm = resources.getDisplayMetrics();
Configuration config = resources.getConfiguration();
config.setLocale(locale);
resources.updateConfiguration(config, dm);

系统语言的切换

切换整个系统的语言。
在6.0的系统中，切换系统语言的方法位于LocalePicker.java文件中（7.0后有变化）：

#android/frameworks/base/core/java/com/android/internal/app/LocalePicker.java

public static void updateLocale(Locale locale) {
    try {
        IActivityManager am = ActivityManagerNative.getDefault();
        Configuration config = am.getConfiguration();
        config.setLocale(locale);
        config.userSetLocale = true;
        am.updateConfiguration(config);
        // Trigger the dirty bit for the Settings Provider.
        BackupManager.dataChanged("com.android.providers.settings");
    } catch (RemoteException e) {
        // Intentionally left blank
    }
}

 

我们可以通过下面两种方法来修改系统语言：

1. 修改persist.sys.locale的值

adb shell命令：通过 getprop 和 setprop persist.sys.locale的值来实现语言的切换，但是这种方法需要重启后才能生效。例如：setprop persist.sys.locale zh-CN

2. 程序中通过反射来修改

try {
    Class iActivityManager = Class.forName("android.app.IActivityManager");
    Class activityManagerNative = Class.forName("android.app.ActivityManagerNative");
    Method getDefault = activityManagerNative.getDeclaredMethod("getDefault");
    Object objIActMag = getDefault.invoke(activityManagerNative);
    Method getConfiguration = iActivityManager.getDeclaredMethod("getConfiguration");
    Configuration config = (Configuration) getConfiguration.invoke(objIActMag);
    config.locale = locale;
    Class clzConfig = Class.forName("android.content.res.Configuration");
    java.lang.reflect.Field userSetLocale = clzConfig.getField("userSetLocale");
    userSetLocale.set(config, true);
    Class[] clzParams = {Configuration.class};
    Method updateConfiguration = iActivityManager.getDeclaredMethod("updateConfiguration", clzParams);
    updateConfiguration.invoke(objIActMag, config);
    BackupManager.dataChanged("com.android.providers.settings");
} catch (Exception e) {
    e.printStackTrace();
}

 

Author：xcz1899 Link: https://www.jianshu.com/p/53b4df276b01 Source: Jane's Book Copyright belongs to the author. For commercial reprints, please contact the author for authorization, and for non-commercial reprints, please indicate the source.  

标签：语言,locale,updateConfiguration,设置,Android,Configuration,config,Class,android
From： https://www.cnblogs.com/wanglongjiang/p/17377916.html