Question

我正在尝试添加按钮来更改应用程序中的语言但是将语言改为阿拉伯语后，当我退出应用程序时，它将返回英语。

public class Language extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_language);
    findViewById(R.id.BTN_ar).setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            setLocale("ar");
        }
    });
    findViewById(R.id.BTN_en).setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            setLocale("en");
        }
    });
}

@SuppressWarnings("deprecation")
public void setLocale(String lang) {
    Locale myLocale = new Locale(lang);

    DisplayMetrics dm = getResources().getDisplayMetrics();
    Configuration conf = getResources().getConfiguration();
    conf.locale = myLocale;
    getResources().updateConfiguration(conf, dm);
    Intent refresh = new Intent(this, MainActivity.class);
    startActivity(refresh);
    finish();


    }
}

Answer 1

您应该在SharedPreferences上存储选定的语言，并在创建的活动中查看。

Answer 2

您必须在SharedPreference中保存更改的语言，如下例所示：

Resources res = getApplicationContext().getResources();
// Change locale settings in the app.
DisplayMetrics dm = res.getDisplayMetrics();
android.content.res.Configuration conf = res.getConfiguration();
conf.locale = new Locale(language_code);
res.updateConfiguration(conf, dm);
//save to shared preference
UtilFunctions.changeLanguage(HomeActivity.this, language_code);


public static void changeLanguage(Context context, String languageCode) {
        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
        SharedPreferences.Editor editor = preferences.edit();
        editor.putString("lang", languageCode);
        editor.apply();
}

public static String getCurrentLanguage(Context context) {
    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
    return prefs.getString("lang", "");
}

更改Android应用程序的语言

2 个答案: