Firebase 通知未显示图标

Question

我想在应用程序处于前台和后台时都使用 firebase 发送通知。我能够做到这一点，但问题是我希望显示我的启动器图标而不是默认的 firebase 通知图标（一些白色方形圆圈）。我已经实现了以下代码，但仍然没有显示。我不知道这里有什么问题。这是代码 FirebaseMessagingService

public class MyFirebaseMessagingService extends FirebaseMessagingService {

    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        Intent intent = new Intent(this, MainActivity.class);
        intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent pendingIntent = PendingIntent.getActivity(this,0,intent,PendingIntent.FLAG_ONE_SHOT);

        NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this);
        notificationBuilder.setContentTitle("Dream 11 Prediction Guru");
        notificationBuilder.setContentText(remoteMessage.getNotification().getBody());
        notificationBuilder.setAutoCancel(true);
        notificationBuilder.setSmallIcon(R.mipmap.ic_launcher_round);
        //notificationBuilder.setLargeIcon(R.mipmap.ic_launcher);
        notificationBuilder.setContentIntent(pendingIntent);

        NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        notificationManager.notify(0,notificationBuilder.build());
    }

}

FirebaseInstanceIdService 代码

public class MyFirebaseInstanceIdService extends FirebaseInstanceIdService {

    private static final String REG_TOKEN = "REG_TOKEN";

    @Override
    public void onTokenRefresh() {
        String recent_token = FirebaseInstanceId.getInstance().getToken();
        Log.d(REG_TOKEN,recent_token);
    }

}

Answer 1

尝试在清单文件中添加：

<meta-data
            android:name="com.google.firebase.messaging.default_notification_icon"
            android:resource="@mipmap/ic_launcher" />