BroadcastReceiver does not receive intent Intent.ACTION_LOCALE_CHANGED

Question

I want my app to be aware anytime the user changes the locale. So in my Application class, I create a receiver to listen to the system intent ACTION_LOCALE_CHANGED:

public final class MyApp extends Application {

    private BroadcastReceiver myReceiver = new BroadcastReceiver() {

    @Override public void onReceive(Context context, Intent intent) {
        String locale = Locale.getDefault().getCountry();
        Toast.makeText(context, "LOCALE CHANGED to " + locale, Toast.LENGTH_LONG).show();
    }
    };

    @Override public void onCreate() {
       IntentFilter filter = new IntentFilter(Intent.ACTION_LOCALE_CHANGED);

       LocalBroadcastManager.getInstance(this).registerReceiver(myReceiver, filter);
    }
}

When I press home and go to the settings app to change my locale, the Toast is not shown. Setting the breakpoint inside onReceive shows it never gets hit.

Answer 1

Why do you want the BroadcastReceiver in Application class. My suggestion is to have a separate class for BroadcastRecevier.

public class LocaleChangedReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {


        if (intent.getAction (). compareTo (Intent.ACTION_LOCALE_CHANGED) == 0)
        {

            Log.v("LocaleChangedRecevier", "received ACTION_LOCALE_CHANGED");
        }

    }
}

and register your Brodcast receiver in Manifest file.

        <receiver
            android:name=".LocaleChangedReceiver"
            android:enabled="true"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.LOCALE_CHANGED" />
            </intent-filter>
        </receiver>

Answer 2

Intent.ACTION_LOCALE_CHANGED is not a local broadcast, so it won't work when you register it with LocalBroadcastManager. LocalBroadcastManager is used for the broadcast used inside your app.

public class MyApp extends Application {

private BroadcastReceiver myReceiver = new BroadcastReceiver() {

    @Override
    public void onReceive(Context context, Intent intent) {
        String locale = Locale.getDefault().getCountry();
        Toast.makeText(context, "LOCALE CHANGED to " + locale,
                Toast.LENGTH_LONG).show();
    }
};

@Override
public void onCreate() {
    super.onCreate();
    IntentFilter filter = new IntentFilter(Intent.ACTION_LOCALE_CHANGED);
    registerReceiver(myReceiver, filter);
}

}