FCM onMessageReceived 未调用 Android

Question

我在 Android 应用程序中实现 FCM 时遇到了一个问题。

一切正常，我的服务onMessageReceived() 没有调用。但是当我从 Java 服务器发送消息时，我会收到以下日志。

    08-25 12:14:53.216 20482-20482/com.cognisun.sas D/ActivityThread: BDC-Calling onReceive: intent=Intent { act=com.google.android.c2dm.intent.RECEIVE flg=0x10000010 pkg=com.cognisun.sas cmp=com.cognisun.sas/com.google.firebase.iid.FirebaseInstanceIdReceiver (has extras) }, receiver=com.google.firebase.iid.FirebaseInstanceIdReceiver@ac9047a
08-25 12:14:53.222 20482-20482/com.cognisun.sas D/ActivityThread: BDC-Calling onReceive end receiver=class com.google.firebase.iid.FirebaseInstanceIdReceiver
08-25 12:14:53.223 20482-20482/com.cognisun.sas D/ActivityThread: BDC-RECEIVER handled : 0 / ReceiverData{intent=Intent { act=com.google.android.c2dm.intent.RECEIVE flg=0x10000010 pkg=com.cognisun.sas (has extras) } packageName=com.cognisun.sas resultCode=-1 resultData=null resultExtras=null}
08-25 12:14:53.223 20482-20482/com.cognisun.sas D/ActivityThread: SVC-Creating service: CreateServiceData{token=android.os.BinderProxy@750442b className=com.cognisun.sas.services.firebase.MyFirebaseMessagingService packageName=com.cognisun.sas intent=null}
08-25 12:14:53.223 20482-20482/com.cognisun.sas D/ActivityThread: SVC-CREATE_SERVICE handled : 0 / CreateServiceData{token=android.os.BinderProxy@750442b className=com.cognisun.sas.services.firebase.MyFirebaseMessagingService packageName=com.cognisun.sas intent=null}
08-25 12:14:53.224 20482-20482/com.cognisun.sas D/ActivityThread: SVC-Calling onStartCommand: com.cognisun.sas.services.firebase.MyFirebaseMessagingService@6345088, flags=0, startId=1
08-25 12:14:53.225 20482-20482/com.cognisun.sas D/ActivityThread: SVC-SERVICE_ARGS handled : 0 / ServiceArgsData{token=android.os.BinderProxy@750442b startId=1 args=Intent { act=com.google.firebase.MESSAGING_EVENT pkg=com.cognisun.sas cmp=com.cognisun.sas/.services.firebase.MyFirebaseMessagingService (has extras) }}
08-25 12:14:53.227 20482-21308/com.cognisun.sas D/SettingsInterface:  from settings cache , name = cover_app_component , value = disable
08-25 12:14:53.227 20482-21308/com.cognisun.sas D/SettingsInterface:  from settings cache , name = cover_app_lock , value = 0
08-25 12:14:53.232 20482-20482/com.cognisun.sas D/ActivityThread: SVC-Destroying service: com.cognisun.sas.services.firebase.MyFirebaseMessagingService@6345088
08-25 12:14:53.233 20482-20482/com.cognisun.sas D/ActivityThread: SVC-STOP_SERVICE handled : 0 / android.os.BinderProxy@750442b

有什么建议吗？？？？

这是我的服务类，

class MyFirebaseMessagingService : FirebaseMessagingService() {
    internal var TAG = "FCM Message"
    override fun onMessageReceived(remoteMessage: RemoteMessage?) {
        Log.e(TAG, "From: " + remoteMessage!!.getFrom())

        // Check if message contains a data payload.
        if (remoteMessage.getData().size > 0) {
            Log.e(TAG, "Message data payload: " + remoteMessage.getData())
        }

        // Check if message contains a notification payload.
        if (remoteMessage.getNotification() != null) {
            Log.e(TAG, "Message Notification Body: " + remoteMessage.getNotification().getBody()!!)
        }
    }
}

AndroidManifest.xml 文件，

<service android:name=".fcm.MyFirebaseInstanceIDService"
        android:exported="false">
    <intent-filter>
        <action android:name="com.google.firebase.INSTANCE_ID_EVENT" />
    </intent-filter>
</service>

<service android:name=".fcm.MyFirebaseMessagingService"
    android:exported="false">
    <intent-filter>
        <action android:name="com.google.firebase.MESSAGING_EVENT" />
    </intent-filter>
</service>

我在应用处于后台时收到通知。如果应用程序进入前台会出现问题

Answer 1

当您的应用处于后台或被终止时，Firebase 不会调用您的 onMessageReceived()，并且您无法自定义通知。它将显示由 Firebase 自行管理的通知。

让 Firebase 库在任何情况下都调用您的 onMessageReceived()

a) 前景

b) 背景

c) 被杀死

不要在您对 Firebase API 的请求中添加 JSON 密钥“通知”，而是使用“数据”，见下文。

例如，以下消息不会调用onMessageReceived()

{
  "to": "/topics/test",
  "notification": {
    "title" : "title",
    "message": "data!"
   }
}

但这会起作用

{
  "to": "/topics/test",
   "data": {
       "title":"title",
       "message":"data!"
   }
} 

看到这里它有firebase消息类型的详细描述例如：

@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
Log.d(TAG, "From: " + remoteMessage.getFrom());

    // Check if message contains a data payload.
    if (remoteMessage.getData().size() > 0) {
        Log.d(TAG, "Message data payload: " + remoteMessage.getData());
        sendNotification(remoteMessage.getData().get("message").toString(),
             remoteMessage.getData().get("title").toString());
    }
}

private void sendNotification(String message, String title) {
    int requestID = (int) System.currentTimeMillis();
    Intent intent = new Intent(this, activityCompat);

    PendingIntent pendingIntent = PendingIntent.getActivity(this, requestID, intent, PendingIntent.FLAG_UPDATE_CURRENT);

    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
            .setSmallIcon(R.drawable.small_logo)
            .setContentTitle(title)
            .setContentText(message).setContentIntent(pendingIntent)
            .setAutoCancel(true)
            .setStyle(new NotificationCompat.BigTextStyle()
                    .bigText(messageBody))
            .setTicker(messageBody);

    NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    notificationBuilder.getNotification().flags |= Notification.FLAG_AUTO_CANCEL;
    Notification notification = notificationBuilder.build();

    notificationManager.notify(requestID, notification);
}

Answer 2

首先，按照this指南中的说明进行操作，它们非常清晰易懂，或者您可以从here中克隆示例代码，自己看看有什么问题。

其次你读过这些关于onMessageReceived()的cmets吗

// [START_EXCLUDE]
// There are two types of messages data messages and notification messages. Data messages are handled
// here in onMessageReceived whether the app is in the foreground or background. Data messages are the type
// traditionally used with GCM. Notification messages are only received here in onMessageReceived when the app
// is in the foreground. When the app is in the background an automatically generated notification is displayed.
// When the user taps on the notification they are returned to the app. Messages containing both notification
// and data payloads are treated as notification messages. The Firebase console always sends notification
// messages. For more see: https://firebase.google.com/docs/cloud-messaging/concept-options
// [END_EXCLUDE]

在class 中寻找以下评论

// Also if you intend on generating your own notifications as a result of a received FCM
// message, here is where that should be initiated. See sendNotification method below.

更多信息请见：https://firebase.google.com/docs/cloud-messaging/concept-options