android - 开始 Activity 时选择android应用程序的语言

Question

我想设置在活动开始时选择的应用程序语言，该语言的值在SharedPreferences中定义。
以下代码：

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        SharedPreferences sharedPreferences = getSharedPreferences("language", Context.MODE_PRIVATE);
        String language = sharedPreferences.getString("language", "");
        Log.e("lang is :", language);
        if (language == "fr") {
            Locale locale = new Locale("fr");
            Locale.setDefault(locale);
            Configuration config = new Configuration();
            config.locale = locale;
            getResources().updateConfiguration(config, null);
            //finish();
            //startActivity(getIntent());
        }else if(language == "en"){
            Locale locale = new Locale("en");
            Locale.setDefault(locale);
            Configuration config = new Configuration();
            config.locale = locale;
            getResources().updateConfiguration(config, null);
        }
        setContentView(R.layout.activity_main);

问题是应用程序总是从设备的语言开始！！！

Answer 1

好的，试着这样修改代码：

            Resources res = getResources();
            // Change locale settings in the app.
            DisplayMetrics dm = res.getDisplayMetrics();
            android.content.res.Configuration conf = res.getConfiguration();
            conf.locale = new Locale("put the value that u get from SharedPreferences);
            res.updateConfiguration(conf, dm);

希望能成功！