firebase - Getting Multiple Notification instead of one in Android -


i using firebase notification in android app. generating notification using below code : 

public class firebasenotificationservice extends firebasemessagingservice {  private static final string tag = firebasenotificationservice.class.getsimplename(); private string strtitle = "my notification"; private string strmessage = "no description";  @override public void onmessagereceived(remotemessage remotemessage) {     if (prefrences.getbooleanvalue(getapplicationcontext(), is_login) && prefrences.getbooleanvalue(getapplicationcontext(), prefrences.is_notification)) {         if (remotemessage.getdata().get("title") != null) {             strtitle = remotemessage.getdata().get("title");         }         if (remotemessage.getdata().get("message") != null) {             strmessage = remotemessage.getdata().get("message");         }         sendnotification(strtitle, strmessage);     } }  private void sendnotification(string strtitle, string messagebody) {     try {         if (!gettopactivity().equals("com.app.activity.notificationactivity")) {             intent intent = new intent(this, dashboardactivity.class);             intent.putextra("notification", "yes");             intent.addflags(intent.flag_activity_clear_top);             pendingintent pendingintent = pendingintent.getactivity(this, 0 /* request code */, intent,                     pendingintent.flag_one_shot);              uri defaultsounduri = ringtonemanager.getdefaulturi(ringtonemanager.type_notification);             notificationcompat.builder notificationbuilder = new notificationcompat.builder(this)                     .setsmallicon(r.mipmap.app_icon)                     .setcontenttitle(strtitle)                     .setcontenttext(messagebody)                     .setautocancel(true)                     .setsound(defaultsounduri)                     .setcontentintent(pendingintent);              notificationmanager notificationmanager =                     (notificationmanager) getsystemservice(context.notification_service);              notificationmanager.notify(++notification_id /* id of notification */, notificationbuilder.build());         } else {             intent intent = new intent();             intent.setaction("load_service");             sendbroadcast(intent);         }     } catch (exception e) {         e.printstacktrace();     } }  public string gettopactivity() {     activitymanager = (activitymanager) this.getsystemservice(activity_service);     list<activitymanager.runningtaskinfo> taskinfo = am.getrunningtasks(1);     return taskinfo.get(0).topactivity.getclassname(); } }

the issue multiple notification on status bar generating instead of single, same notification sent backend.

i have taken notification_id static integer in constant file. , incrementing differnt notification.

what might issue ?

do not increase notification id when u receive same notification. need set flag check if notification received same or different notification. when send notification fcm send payload has key-value pair bears notification id. set notification id instead of increasing code. hope helps


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