安卓设置系统语言的方法

分类：Android, Java 阅读 (2,456)

11月 262020

转载请注明原文地址：http://bcoder.com/java/method-to-setup-system-language-in-android

本文基于Android8.1系统，应用需要为系统应用

实现方法参考此链接：https://blog.csdn.net/weijuantang/article/details/41379027

通过反射实现设置语言功能的函数：

    private void updateLanguage(Locale locale) {
        Log.d("ANDROID_LAB", locale.toString());
        try {
            Object objIAm, objActMagNative;

            Class ClzAm = ActivityManager.class;
            ActivityManager am = (ActivityManager) getContext().getSystemService(Context.ACTIVITY_SERVICE);
            Class clzIAM = Class.forName("android.app.IActivityManager");
            Class clzAmNative = Class.forName("android.app.ActivityManagerNative");
            Method mtdActMagNative$getDefault = clzAmNative.getDeclaredMethod("getDefault");
// IActivityManager iActMag = ActivityManagerNative.getDefault();

            Method getIamMethod = ClzAm.getMethod("getService");
            objIAm = getIamMethod.invoke(am);

            ////objIAm = mtdActMagNative$getDefault.invoke(clzAmNative);
// Configuration config = iActMag.getConfiguration();
            Method mtdIActMag$getConfiguration = clzIAM.getDeclaredMethod("getConfiguration");
            Configuration config = (Configuration) mtdIActMag$getConfiguration.invoke(objIAm);
            config.locale = locale;
            config.setLocales(new LocaleList(locale));
// iActMag.updateConfiguration(config);
// 此处需要声明权限:android.permission.CHANGE_CONFIGURATION
// 会重新调用 onCreate();

            Method updatePersistentConfigurationMethod = clzIAM.getMethod("updatePersistentConfiguration", Configuration.class);
            updatePersistentConfigurationMethod.invoke(objIAm, config);

            Class[] clzParams = { Configuration.class };
            Method mtdIActMag$updateConfiguration = clzIAM.getDeclaredMethod(
                    "updateConfiguration", clzParams);
            mtdIActMag$updateConfiguration.invoke(objIAm, config);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

private void updateLanguage(Locale locale) {

Log.d("ANDROID_LAB", locale.toString());

try {

Object objIAm, objActMagNative;

Class ClzAm = ActivityManager.class;

ActivityManager am = (ActivityManager) getContext().getSystemService(Context.ACTIVITY_SERVICE);

Class clzIAM = Class.forName("android.app.IActivityManager");

Class clzAmNative = Class.forName("android.app.ActivityManagerNative");

Method mtdActMagNative$getDefault = clzAmNative.getDeclaredMethod("getDefault");

// IActivityManager iActMag = ActivityManagerNative.getDefault();

Method getIamMethod = ClzAm.getMethod("getService");

objIAm = getIamMethod.invoke(am);

////objIAm = mtdActMagNative$getDefault.invoke(clzAmNative);

// Configuration config = iActMag.getConfiguration();

Method mtdIActMag$getConfiguration = clzIAM.getDeclaredMethod("getConfiguration");

Configuration config = (Configuration) mtdIActMag$getConfiguration.invoke(objIAm);

config.locale = locale;

config.setLocales(new LocaleList(locale));

// iActMag.updateConfiguration(config);

// 此处需要声明权限:android.permission.CHANGE_CONFIGURATION

// 会重新调用 onCreate();

Method updatePersistentConfigurationMethod = clzIAM.getMethod("updatePersistentConfiguration", Configuration.class);

updatePersistentConfigurationMethod.invoke(objIAm, config);

Class[] clzParams = { Configuration.class };

Method mtdIActMag$updateConfiguration = clzIAM.getDeclaredMethod(

"updateConfiguration", clzParams);

mtdIActMag$updateConfiguration.invoke(objIAm, config);

} catch (Exception e) {

e.printStackTrace();

}

调用方法：

updateLanguage(new Locale("zh", "CN"));
updateLanguage(new Locale("en", "US"));

1 2	updateLanguage(new Locale("zh", "CN")); updateLanguage(new Locale("en", "US"));

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