我正在使用Firebase并测试在应用程序处于后台时从服务器发送通知到我的应用程序。通知发送成功，它甚至出现在设备的通知中心，但当通知出现或即使我点击它，我的FCMessagingService中的onmessagerreceived方法永远不会被调用。
当我测试这个，而我的应用程序是在前台，onmessagerreceived方法被调用，一切工作正常。问题发生在应用程序在后台运行时。
这是我有意为之的行为吗，或者我有办法解决这个问题吗?
这是我的FBMessagingService:
import android.util.Log;
import com.google.firebase.messaging.FirebaseMessagingService;
import com.google.firebase.messaging.RemoteMessage;
public class FBMessagingService extends FirebaseMessagingService {
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
Log.i("PVL", "MESSAGE RECEIVED!!");
if (remoteMessage.getNotification().getBody() != null) {
Log.i("PVL", "RECEIVED MESSAGE: " + remoteMessage.getNotification().getBody());
} else {
Log.i("PVL", "RECEIVED MESSAGE: " + remoteMessage.getData().get("message"));
}
}
}
我也有同样的问题。如果应用程序是前台-它会触发我的后台服务，我可以根据通知类型更新我的数据库。
但是，应用程序将转到后台-默认的通知服务将小心地向用户显示通知。
下面是我在后台识别应用程序并触发后台服务的解决方案，
public class FirebaseBackgroundService extends WakefulBroadcastReceiver {
private static final String TAG = "FirebaseService";
@Override
public void onReceive(Context context, Intent intent) {
Log.d(TAG, "I'm in!!!");
if (intent.getExtras() != null) {
for (String key : intent.getExtras().keySet()) {
Object value = intent.getExtras().get(key);
Log.e("FirebaseDataReceiver", "Key: " + key + " Value: " + value);
if(key.equalsIgnoreCase("gcm.notification.body") && value != null) {
Bundle bundle = new Bundle();
Intent backgroundIntent = new Intent(context, BackgroundSyncJobService.class);
bundle.putString("push_message", value + "");
backgroundIntent.putExtras(bundle);
context.startService(backgroundIntent);
}
}
}
}
}
在manifest.xml中
<receiver android:exported="true" android:name=".FirebaseBackgroundService" android:permission="com.google.android.c2dm.permission.SEND">
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
</intent-filter>
</receiver>
在最新的android 8.0版本中测试了该解决方案。谢谢
我也有同样的问题。使用“数据消息”而不是“通知”更容易。数据消息总是加载类onmessagerreceived。
在该类中，您可以使用notificationbuilder创建自己的通知。
例子:
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
sendNotification(remoteMessage.getData().get("title"),remoteMessage.getData().get("body"));
}
private void sendNotification(String messageTitle,String messageBody) {
Intent intent = new Intent(this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this,0 /* request code */, intent,PendingIntent.FLAG_UPDATE_CURRENT);
long[] pattern = {500,500,500,500,500};
Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder notificationBuilder = (NotificationCompat.Builder) new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.ic_stat_name)
.setContentTitle(messageTitle)
.setContentText(messageBody)
.setAutoCancel(true)
.setVibrate(pattern)
.setLights(Color.BLUE,1,1)
.setSound(defaultSoundUri)
.setContentIntent(pendingIntent);
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
}
