Question

我目前正在使用firebase作为数据库，并在我使用fcm的数据库发生任何更改时通知用户。我已经通过node.js创建了firebase函数，并且每当数据库发生任何更改时它都会被触发并且通知将被发送给用户，但是一旦它显示三次相同的通知就不显示通知。我在互联网上搜索了很多但尚未找到解决方案。

这是screenShot https://imgur.com/a/zNXjo
任何帮助将不胜感激。
这是我的FirebaseMessagingClass

import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.graphics.BitmapFactory;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Build;
import android.support.v4.app.NotificationCompat;
import android.util.Log;

import com.google.firebase.messaging.FirebaseMessagingService;
import com.google.firebase.messaging.RemoteMessage;

/**
 * Created by HP on 04-07-2017.
 */

public class MyFirebaseMessagingService extends FirebaseMessagingService {
    private static final String TAG = "FirebaseMessagingServce";
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        String notificationTitle = null, notificationBody = null;
        super.onMessageReceived(remoteMessage);
        if (remoteMessage.getNotification() != null) {
            Log.d(TAG, "Message Notification Body: " + remoteMessage.getNotification().getBody());
            notificationTitle = remoteMessage.getNotification().getTitle();
            notificationBody = remoteMessage.getNotification().getBody();
        }
        // 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.
        sendNotification(notificationTitle, notificationBody);
    }
    private void sendNotification(String notificationTitle, String notificationBody) {
        Intent intent = new Intent(this, FragmentTwo.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent,
                PendingIntent.FLAG_ONE_SHOT);

        Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        NotificationCompat.Builder notificationBuilder =  new NotificationCompat.Builder(this);
//                .setAutoCancel(true)
//                .setSmallIcon(R.mipmap.ic_launcher)

//                .setContentIntent(pendingIntent)

//                .setSound(defaultSoundUri);
        if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
        {
            notificationBuilder.setSmallIcon(R.mipmap.ic_launcher) //Notification icon
                    .setLargeIcon(BitmapFactory.decodeResource(this.getResources(),
                            R.mipmap.ic_launcher))
                    .setAutoCancel(true)   //Automatically delete the notification
                    .setSound(defaultSoundUri)
                    .setContentTitle(notificationTitle)
                    .setContentText(notificationBody)
                    .setContentIntent(pendingIntent);
        } else
        {
            notificationBuilder.setSmallIcon(R.mipmap.ic_launcher)
                    .setAutoCancel(true)
                    .setSound(defaultSoundUri)
                    .setContentTitle(notificationTitle)
                    .setContentText(notificationBody)
                    .setContentIntent(pendingIntent);
        }

        NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

        notificationManager.notify(0, notificationBuilder.build());
    }
}

这是我的服务类

import android.util.Log;

import com.google.firebase.iid.FirebaseInstanceId;
import com.google.firebase.iid.FirebaseInstanceIdService;

/**
 * Created by HP on 07-09-2017.
 */

public class myInstanceService extends FirebaseInstanceIdService {
    private static final String TAG=FirebaseInstanceIdService.class.getSimpleName();

    @Override
    public void onTokenRefresh() {
        String refreshedToken = FirebaseInstanceId.getInstance().getToken();
        Log.d(TAG, "Refreshed token: " + refreshedToken);

        // If you want to send messages to this application instance or
        // manage this apps subscriptions on the server side, send the
        // Instance ID token to your app server.
        sendRegistrationToServer(refreshedToken);
    }

    private void sendRegistrationToServer(String refreshedToken) {

    }

}

这是我的云功能代码

const functions = require('firebase-functions');

// // Create and Deploy Your First Cloud Functions
// // https://firebase.google.com/docs/functions/write-firebase-functions
//
// exports.helloWorld = functions.https.onRequest((request, response) => {
//  response.send("Hello from Firebase!");
// });
// The Firebase Admin SDK to access the Firebase Realtime Database. 
const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);
// Listens for new messages added to messages/:pushId
exports.pushNotification = functions.database.ref('/News/{pushId}').onWrite( event => {

    console.log('Push notification event triggered');

    //  Grab the current value of what was written to the Realtime Database.
    var valueObject = event.data.val();

    if(valueObject.Image != null) {
      valueObject.Image= "Sent you a photo!";
    }

  // Create a notification
    const payload = {
        notification: {
            title:valueObject.Title,
            body: valueObject.Description || valueObject.Image,
            sound: "default"
        },
    };

  //Create an options object that contains the time to live for the notification and the priority
    const options = {
        priority: "high",
        timeToLive: 60 * 60 * 24
    };


    return admin.messaging().sendToTopic("pushNotifications", payload, options);
});

fcm通知在数据库中发生更改时显示三次

0 个答案: