android firebase通知不起作用 _Firebase

著论准过秦，作赋拟子虚。这篇文章主要讲述android firebase通知不起作用相关的知识，希望能为你提供帮助。
我使用我的应用设置了Firebase消息，但遗憾的是通知未到来。
我正确设置了Firebase，它连接到我的应用程序，我还发送了一些测试消息，在Firebase中说它已完成，但我没有在手机上收到它们。
我的应用程序尚未在商店中，我正在通过android工作室开发和测试它。
这是我的MyFirebaseInstanceIDService类

public class MyFirebaseInstanceIDService extends FirebaseInstanceIdService {private static final String TAG = "MyFirebaseIIDService"; /** * Called if InstanceID token is updated. This may occur if the security of * the previous token had been compromised. Note that this is called when the InstanceID token * is initially generated so this is where you would retrieve the token. */ // [START refresh_token] @Override public void onTokenRefresh() { // Get updated InstanceID token. String refreshedToken = FirebaseInstanceId.getInstance().getToken(); Log.d(TAG, "Refreshed token: " + refreshedToken); // TODO: Implement this method to send any registration to your app's servers. sendRegistrationToServer(refreshedToken); } // [END refresh_token]/** * Persist token to third-party servers. * * Modify this method to associate the user's FCM InstanceID token with any server-side account * maintained by your application. * * @param token The new token. */ private void sendRegistrationToServer(String token) { // Add custom implementation, as needed. }

}
这里是MyFirebaseMessagingService类：
公共类MyFirebaseMessagingService扩展FirebaseMessagingService {private static final String TAG =“MyFirebaseMsgService”;

/** * Called when message is received. * * @param remoteMessage Object representing the message received from Firebase Cloud Messaging. */ // [START receive_message] @Override public void onMessageReceived(RemoteMessage remoteMessage) { // [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]//"Title","Message","NotyType","hotelStatus"String title = ""; if (remoteMessage.getNotification().getTitle() != null){ title = remoteMessage.getNotification().getTitle(); }String message = ""; if (remoteMessage.getNotification().getBody() != null){ message = remoteMessage.getNotification().getBody(); }Log.e("notification","recieved"); sendNotification(title, message); // 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. } // [END receive_message]private void sendNotification(String title, String body) { Intent i = new Intent(this, MainActivity.class); i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); PendingIntent pi = PendingIntent.getActivity(this, 0 /* Request code */, i, PendingIntent.FLAG_ONE_SHOT); Uri sound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); NotificationCompat.Builder builder = new NotificationCompat.Builder(this, getString(R.string.default_notification_channel_id)) .setSmallIcon(R.mipmap.ic_launcher) .setContentTitle(title) .setContentText(body) .setAutoCancel(true) .setSound(sound) .setContentIntent(pi); NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); assert manager != null; manager.notify(0, builder.build()); } }

调试时我没有看到任何日志，也没有在手机上收到任何通知。
我在这里做错了吗？你能给些建议么？谢谢。
答案使用仅通知标记发送的推送不会调用onMessageReceived，并且您的应用程序不在前台。如果确实在前台，则会调用onMessageReceived。
如果您希望触发onMessageReceived，则需要使用附加数据标记或数据标记发送推送。
但请注意，如果同时发送通知和数据标记，则只有当您的应用位于前台时才会触发onMessageReceived，如果它位于后台，则数据标记内的所有内容都将作为附加内容传递到点击意图内
无论您的app是否处于前台，只有Data标记始终会调用onMessageReceived。
例如：仅用于数据标签:)

https://fcm.googleapis.com/fcm/send Content-Type:application/json Authorization:key=AIzaSyZ-1u...0GBYzPu7Udno5aA{ "data": { "score": "5x1", "time": "15:10" }, "to" : "bk3RNwTe3H0:CI2k_HHwgIpoDKCIZvvDMExUdFQ3P1..." }

另一答案【android firebase通知不起作用】哦，现在我尝试了一下！正如您在我的问题中看到的那样，我更新了MyFirebaseMessagingService类，现在它可以工作了！从Firebase控制台，我只发送了消息，没有数据，以及我在设备中收到的所有通知！即使我的应用程序正在运行，即使我关闭它！我收到的每个通知。当应用程序运行时，通知具有我的自定义图标，当应用程序关闭时，默认的“铃声”图标就在那里，但在这两种情况下我都收到了通知！不确定它是如何可能的，但它确实有效。