BroadcastReceiver 没有收到意图 Intent.ACTION_LOCALE_CHANGED

Question

我希望我的应用程序能够在用户更改语言环境时随时知道。所以在我的 Application class 中，我创建了一个 receiver 来监听系统意图 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);
    }
}

当我按主页并转到设置应用程序以更改我的语言环境时，没有显示 Toast。在 onReceive 内设置断点表明它永远不会被命中。

Answer 1

Intent.ACTION_LOCALE_CHANGED不是本地广播，所以用LocalBroadcastManager注册就不行了。 LocalBroadcastManager 用于您应用内使用的广播。

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);
}

}

Answer 2

为什么要在应用程序中使用 BroadcastReceiver class。我的建议是为 BroadcastRecevier 设置一个单独的 class。

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");
        }

    }
}

并在清单文件中注册您的 Brodcast 接收器。

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

BroadcastReceiver 没有收到意图 Intent.ACTION_LOCALE_CHANGED

BroadcastReceiver does not receive intent Intent.ACTION_LOCALE_CHANGED

android

broadcastreceiver

android-intent