android firebase 通知不起作用

Question

我在我的应用程序中设置了 Firebase 消息传递，但遗憾的是没有收到通知。

我正确设置了 Firebase，它已连接到我的应用程序，我还发送了一些测试消息，在 Firebase 中显示已完成，但我没有在手机上收到它们。

我的应用程序还没有在商店中，我正在通过 Android Studio 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.
}

这是 MyFirebaseMessagingService 类:

公共(public)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。

我是不是做错了什么？你能请教吗？谢谢。

Answer 1

onMessageReceived 不会通过仅使用通知标记发送的推送来调用，并且您的应用程序不在前台。如果它确实在前台，您的 onMessageReceived 将被调用。

如果您希望触发 onMessageReceived，您需要发送带有附加数据标签或仅带有数据标签的推送。

但是请注意，如果您同时发送通知和数据标签，您的 onMessageReceived 只会在您的应用程序在前台时被触发，如果它在后台，数据标签内的所有内容都将作为额外内容在点击 Intent 中传递

无论您的应用是否在前台，只有数据标签会始终调用 onMessageReceived。

例如:只是一个数据标签:)

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..."
}