Android中的Firebase推送通知无法正常工作

Question

I am developing an Android application in which I am using Firebase push notifications. Everything is working fine but only one issue with Firebase push notifications.

When my application is open then only big image notification appear ( screenshot ).

But when my application is closed the big image notification is not displaying ( screenshot ).

MyFirebaseInstanceIDService.java

 public class MyFirebaseInstanceIDService extends FirebaseInstanceIdService {
        private static final String TAG = "MyFirebaseIIDService";
        @Override
        public void onTokenRefresh() {
            // Get updated InstanceID token.
            String refreshedToken = FirebaseInstanceId.getInstance().getToken();
            Log.d(TAG, "Refreshed token: " + refreshedToken);
            sendRegistrationToServer(refreshedToken);
        }
        private void sendRegistrationToServer(String token) {
        }
    }

MyFirebaseMessagingService.java

public class MyFirebaseMessagingService extends FirebaseMessagingService {
    private static final String TAG = "FirebaseMessageService";
    Bitmap bitmap;

    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {

        if (remoteMessage.getData().size() > 0) {
            Log.d(TAG, "Message data payload: " + remoteMessage.getData());
        }

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

        //The message which i send will have keys named [message, image, AnotherActivity] and corresponding values.
        //You can change as per the requirement.

        //message will contain the Push Message
        String message = remoteMessage.getData().get("message");
        //imageUri will contain URL of the image to be displayed with Notification
        String imageUri = remoteMessage.getData().get("image");
        //If the key AnotherActivity has  value as True then when the user taps on notification, in the app AnotherActivity will be opened.
        //If the key AnotherActivity has  value as False then when the user taps on notification, in the app MainActivity will be opened.
        String TrueOrFlase = "praveen";

        //To get a Bitmap image from the URL received
        bitmap = getBitmapfromUrl(imageUri);

        try {
//            BitmapFactory.decodeResource(getResources(), R.drawable.watchicon)
            sendNotification(message,bitmap , TrueOrFlase);
        } catch (Exception e) {
            Log.e("qwerty", " exception = " + e.toString());
        }

    }


    /**
     * Create and show a simple notification containing the received FCM message.
     */

    private void sendNotification(String messageBody, Bitmap image, String TrueOrFalse) {
        Intent intent = new Intent(getApplicationContext(), StartActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        intent.putExtra("AnotherActivity", TrueOrFalse);
        PendingIntent pendingIntent = PendingIntent.getActivity(getApplicationContext(), 0 /* Request code */, intent,
                PendingIntent.FLAG_ONE_SHOT);

        Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(getApplicationContext())
                .setSmallIcon(R.drawable.ball)
                .setContentTitle(messageBody)
                .setContentText("hello")
                .setStyle(new NotificationCompat.BigPictureStyle()
                        .bigPicture(image))
                .setAutoCancel(true);


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

        notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());


    }

    /*
     *To get a Bitmap image from the URL received
     * */
    public Bitmap getBitmapfromUrl(String imageUrl) {

        try {
            URL url = new URL(imageUrl);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setDoInput(true);
            connection.connect();
            InputStream input = connection.getInputStream();
            Bitmap myBitmap = BitmapFactory.decodeStream(input);
            return myBitmap;
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }
}

Answer 1

You may get mybitmap null. Try to check it first and to resolve this use Picaso with the async task to download an image from url and then in on completion generate the notification with mybitmap.

Hope this will help you.

Answer 2

I am also getting the same problem while using firebase. The answer is very simple.

1) Register your application on Firebase console and import the necessary library needed.

2)Make services classes MyFirebaseMessagingService and FirebaseInstanceIdService.

3)Register your service to AndroidManifest

4) Now come to MyFirebaseMessagingService.java class and do the modification

public class Notif extends FirebaseMessagingService {
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        if (remoteMessage.getData().size() > 0) {
            try {
                JSONObject data = new JSONObject(remoteMessage.getData());
                String jsonMessage = data.getString("body");
                String jsonTitle = data.getString("title");
                String jsonImage = data.getString("image");
                mainNotification(jsonTitle, jsonMessage, jsonImage);
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
    }

    private void mainNotification(String title, String body, String image) {
        Intent i = new Intent(this, MainActivity.class);
        PendingIntent pi = PendingIntent.getActivity(this, 0, i, PendingIntent.FLAG_UPDATE_CURRENT);
        NotificationCompat.Builder bn = new NotificationCompat.Builder(this)
                .setSmallIcon(R.drawable.analytics)
                .setContentTitle(title)
                .setVibrate(new long[]{1000, 1000, 1000, 1000, 1000})
                .setContentText(body)
                .setStyle(new NotificationCompat.BigPictureStyle()
                        .bigPicture(getBitmapfromUrl(image)))
                .setAutoCancel(true)
                .setContentIntent(pi);
        NotificationManager nm = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        if (nm != null)
            nm.notify(0, bn.build());
    }


    public Bitmap getBitmapfromUrl(String imageUrl) {
        try {
            URL url = new URL(imageUrl);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setDoInput(true);
            connection.connect();
            InputStream input = connection.getInputStream();
            Bitmap bitmap = BitmapFactory.decodeStream(input);
            return bitmap;

        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            return null;
        }
    }
}

5) Make sure that you were sending your notification using post menthod without sending the notification part and sending only data part with all the header with Content-Type application/json Authorization key=yourkey link where you have to post https://fcm.googleapis.com/fcm/send with body like this

 {
      "to": "/topics/NEWS",
       "data": {
           "body":"text",
           "title":"AAAAAAA",
           "image":"https://static.independent.co.uk/s3fs-public/styles/article_small/public/thumbnails/image/2016/11/14/12/messi.jpg"
       }
    } 

now click send and this will work. already tested