如何在android APP中设置系统语言？

Question

目前有采用下面方法，但是这样仅仅是改变了应用的语言，系统没有改变，我的需求是改变天下系统语言：

private void setLanguage(int language) {
        try {
            Configuration config = getResources().getConfiguration();
            DisplayMetrics dm = getResources().getDisplayMetrics();
            if (language == Common.LANGUAGE_EN) {
                config.locale = Locale.ENGLISH;
            } else {
                config.locale = Locale.SIMPLIFIED_CHINESE;
            }
            getResources().updateConfiguration(config, dm);

            SharedPreferences sp = getSharedPreferences("userinfo", 0);
            SharedPreferences.Editor editor=sp.edit();
            editor.putInt("locale", language);
            editor.commit();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

Answer 1

已找到一种方案并验证通过，通过反射机制，不过设置完了，重启后又恢复原语言了，追问该如何保存系统语言设置？

private void updateLanguage(Locale locale) {
        try {
            Object objIActMag, objActMagNative;
            Class clzIActMag = Class.forName("android.app.IActivityManager");
            Class clzActMagNative = Class.forName("android.app.ActivityManagerNative");
            Method mtdActMagNative$getDefault = clzActMagNative.getDeclaredMethod("getDefault");
            // IActivityManager iActMag = ActivityManagerNative.getDefault();
            objIActMag = mtdActMagNative$getDefault.invoke(clzActMagNative);
            // Configuration config = iActMag.getConfiguration();
            Method mtdIActMag$getConfiguration = clzIActMag.getDeclaredMethod("getConfiguration");
            Configuration config = (Configuration) mtdIActMag$getConfiguration.invoke(objIActMag);
            config.locale = locale;
            // iActMag.updateConfiguration(config);
            // 此处需要声明权限:android.permission.CHANGE_CONFIGURATION
            // 会重新调用 onCreate();
            Class[] clzParams = { Configuration.class };
            Method mtdIActMag$updateConfiguration = clzIActMag.getDeclaredMethod(
                    "updateConfiguration", clzParams);
            mtdIActMag$updateConfiguration.invoke(objIActMag, config);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }