start activity automatically after receiving fcm notification?

Question

I want to start a specific activity automatically after receiving fcm push notification.it works fine with on clicking but I want to start it automatically after the notification is received.Here is my code

My FirebaseMessagingService method where I am triggering the code

public class MyFirebaseMessagingService extends FirebaseMessagingService {

private static final String TAG = MyFirebaseMessagingService.class.getSimpleName();

private NotificationUtils notificationUtils;

@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
    Log.e(TAG, "From: " + remoteMessage.getFrom());
//changes for notification on 9/11/2017
//        if(remoteMessage.getNotification().getBody()!=null) {
       // Log.e(TAG, "Message Body: " + remoteMessage.getNotification().getBody());
    //}
    //showNotificationMessage(remoteMessage.getNotification().getBody());
//        String click_action=remoteMessage.getNotification().getClickAction();
   // Intent i=new Intent(click_action);
 ////////////////////////////////////////
        if (remoteMessage == null)
        return;

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

        handleNotification(remoteMessage.getNotification().getBody());
    }

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

        try {
            JSONObject json = new JSONObject(remoteMessage.getData().toString());
            Handler mHandler;
            //mHandler = new Handler() {
                handleDataMessage(json);
            //};
        } catch (Exception e) {
            Log.e(TAG, "Exception: " + e.getMessage());
        }
    }
}

private void handleNotification(String message) {
    if (!NotificationUtils.isAppIsInBackground(getApplicationContext())) {
        // app is in foreground, broadcast the push message
        Intent pushNotification = new Intent(Config.PUSH_NOTIFICATION);
        pushNotification.putExtra("message", message);
        LocalBroadcastManager.getInstance(this).sendBroadcast(pushNotification);

        // play notification sound
        NotificationUtils notificationUtils = new NotificationUtils(getApplicationContext());
        notificationUtils.playNotificationSound();
        //Uri notification = RingtoneManager.getDefaultUri(RingtoneManager.);
        //Ringtone r = RingtoneManager.getRingtone(getApplicationContext(), notification);
        //r.play();
    }else{
        // If the app is in background, firebase itself handles the notification
    }
}

    private void handleDataMessage (JSONObject json){

        Log.e(TAG, "push json: " + json.toString());

        try {
            JSONObject data = json.getJSONObject("data");

            String title = data.getString("title");
            String message = data.getString("message");
            boolean isBackground = data.getBoolean("is_background");
            //String imageUrl = data.getString("image");
            String timestamp = data.getString("timestamp");

            JSONObject payload = data.getJSONObject("payload");
            OpenTokConfig.SESSION_ID = payload.getString("session_id");
            OpenTokConfig.API_KEY = payload.getString("api_key");
            OpenTokConfig.TOKEN = payload.getString("token_id");

            Log.e(TAG, "title: " + title);
            Log.e(TAG, "message: " + message);
            Log.e(TAG, "isBackground: " + isBackground);

            //Log.e(TAG, "payload: " + payload.toString());
            //Log.e(TAG, "imageUrl: " + imageUrl);
            Log.e(TAG, "timestamp: " + timestamp);
            Intent i = new Intent(Config.CLICK_ACTION);
            showNotificationMessage(getApplicationContext(), title, message, timestamp, i);


            if (!NotificationUtils.isAppIsInBackground(getApplicationContext())) {
                // app is in foreground, broadcast the push message
                Intent pushNotification = new Intent(Config.PUSH_NOTIFICATION);
                pushNotification.putExtra("message", message);
                LocalBroadcastManager.getInstance(this).sendBroadcast(pushNotification);

                // play notification sound
                NotificationUtils notificationUtils = new NotificationUtils(getApplicationContext());
                notificationUtils.playNotificationSound();
                Common.call_recvd = true;
            } else {
                // app is in background, show the notification in notification tray
                Intent resultIntent = new Intent(getApplicationContext(), RegistrationActivity.class);
                resultIntent.putExtra("message", message);

                // check for image attachment
           /* if (TextUtils.isEmpty(imageUrl)) {
                showNotificationMessage(getApplicationContext(), title, message, timestamp, resultIntent);
            } else {
                // image is present, show notification with image
                showNotificationMessageWithBigImage(getApplicationContext(), title, message, timestamp, resultIntent, imageUrl);
            }*/
            }
        } catch (JSONException e) {
            Log.e(TAG, "Json Exception: " + e.getMessage());
        } catch (Exception e) {
            Log.e(TAG, "Exception: " + e.getMessage());
        }
    }


/**
 * Showing notification with text only
 */
private void showNotificationMessage(Context context, String title, String message, String timeStamp, Intent intent) {
    notificationUtils = new NotificationUtils(context);
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
    notificationUtils.showNotificationMessage(title, message, timeStamp, intent);
    //startActivity(intent);
}

/**
 * Showing notification with text and image
 */
private void showNotificationMessageWithBigImage(Context context, String title, String message, String timeStamp, Intent intent, String imageUrl) {
    notificationUtils = new NotificationUtils(context);
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
    notificationUtils.showNotificationMessage(title, message, timeStamp, intent, imageUrl);
}

}

MyNotification Utils class code

public void showNotificationMessage(final String title, final String message, final String timeStamp, Intent intent, String imageUrl) {
    // Check for empty push message
    if (TextUtils.isEmpty(message))
        return;


    // notification icon
    final int icon = R.mipmap.ic_launcher;

    intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
    final PendingIntent resultPendingIntent =
            PendingIntent.getActivity(
                    mContext,
                    0,
                    intent,
                    PendingIntent.FLAG_CANCEL_CURRENT
            );

    final NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(
            mContext);

    final Uri alarmSound = Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE
            + "://" + mContext.getPackageName() + "/raw/notification");

    if (!TextUtils.isEmpty(imageUrl)) {

        if (imageUrl != null && imageUrl.length() > 4 && Patterns.WEB_URL.matcher(imageUrl).matches()) {

            Bitmap bitmap = getBitmapFromURL(imageUrl);

            if (bitmap != null) {
                showBigNotification(bitmap, mBuilder, icon, title, message, timeStamp, resultPendingIntent, alarmSound);
            } else {
                showSmallNotification(mBuilder, icon, title, message, timeStamp, resultPendingIntent, alarmSound);
            }
        }
    } else {
        showSmallNotification(mBuilder, icon, title, message, timeStamp, resultPendingIntent, alarmSound);
        playNotificationSound();
    }
}

user_7423949 · Answer

You can achieve this using broadcast receiver,so when you get notification simply send the broadcast and on receiving broadcast you can write code related to start activity.

send broacast using this.

Intent intentNotification = new Intent();
intentNotification.setAction("com.from.notification");
sendBroadcast(intentNotification);

register your broadcast receiver using this :

getActivity().registerReceiver(broadcastReceiver,
                new IntentFilter("com.from.notification"));

on receive broadcast :

private BroadcastReceiver broadcastReceiver;
broadcastReceiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                // do your stuff related to start activity
            }
        };

user_11369023 · Answer

automatically start an activity after receiving FCM notification in Kotlin.

override fun onMessageReceived(remoteMessage: RemoteMessage) {
    super.onMessageReceived(remoteMessage)
    val notification = remoteMessage.notification
    if (notification != null) {
        val intent = Intent(this, SecondActivity::class.java)
        intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK
        startActivity(intent)
    }
}

user_3483694 · Answer

When you receive notification,

Intent notificationIntent = new Intent(context, YourActivity.class);
notificationIntent.setAction(Intent.ACTION_MAIN);
notificationIntent.addCategory(Intent.CATEGORY_LAUNCHER);
startActivity(notificationIntent);

But you have to manage what to do when app is in background, foreground or killed state.

start activity automatically after receiving fcm notification?

3 Answers