how to identify selected notification from multiple Notification android? -

here myfirebasemessagingservice using generate notification in application.

class myfirebasemessagingservice extends firebasemessagingservice {     private final string tag = this.getclass().getsimplename();  @override public void onmessagereceived(remotemessage remotemessage) {     //displaying data in log      log.d(tag, "from: " + remotemessage.getfrom());     log.d(tag, "notification message body: " + remotemessage.getnotification().getbody());     log.d(tag, "onmessagereceived: " + remotemessage.getnotification().gettag());    //calling method generate notification     sendnotification(remotemessage.getnotification().getbody(),remotemessage.getnotification().gettitle());  }  //this method generating push notification //it same did in earlier posts private void sendnotification(string messagebody, string title) {      intent intent = new intent(this, notificationdetailactivity.class);     intent.putextra(appconstant.notification, messagebody);     intent.putextra(appconstant.title, title);     intent.addflags(intent.flag_activity_clear_top);     pendingintent pendingintent = pendingintent.getactivity(this, 0, intent, pendingintent.flag_update_current);      uri defaultsounduri = ringtonemanager.getdefaulturi(ringtonemanager.type_notification);     notificationcompat.builder notificationbuilder = new notificationcompat.builder(this)             .setsmallicon(r.mipmap.ic_launcher)             .setcontenttitle(title)             .setcontenttext(messagebody)             .setautocancel(true)             .setsound(defaultsounduri)             .setcontentintent(pendingintent);      notificationmanager notificationmanager = (notificationmanager) getsystemservice(context.notification_service);     notificationmanager.notify((int) ((new date().gettime() / 1000l) % integer.max_value), notificationbuilder.build()); } 

}

here able generate nultiple notification not able identify perticular notification multiple notification in notification bar, displaying latest notification's title , message body, guys please me.

notificationmanager.notify((int) ((new date().gettime() / 1000l) % integer.max_value), notificationbuilder.build()); 

replace (int) ((new date().gettime() / 1000l) % integer.max_value) identification logic of own (e.g incremental integers).