android - How to invoke an activity from background services when arrives a notification? -

i want check notifications background receivers or services. notification shown, should invoke activity.

mainacticityclass

here have created alarm class call broadcast manager @ specific interval

public class mainactivity extends appcompatactivity {  private context context; @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);     this.context = this;     intent alarm = new intent(this.context, alarmreceiver.class);     boolean alarmrunning = (pendingintent.getbroadcast(this.context, 0, alarm, pendingintent.flag_no_create) != null);     if(alarmrunning == false) {         pendingintent pendingintent = pendingintent.getbroadcast(this.context, 0, alarm, 0);         alarmmanager alarmmanager = (alarmmanager) getsystemservice(context.alarm_service);         alarmmanager.setrepeating(alarmmanager.elapsed_realtime_wakeup, systemclock.elapsedrealtime(), 60000, pendingintent);     }  } 

alarm receiver class

this broadcast class invoke ground

public class alarmreceiver extends broadcastreceiver {     public alarmreceiver() {     }      @override     public void onreceive(context context, intent intent) {         intent background = new intent(context, mylistenerservices.class);         context.startservice(background);     } } 

mylistener

this subclass of notificationlistener services reads incoming notification unable read notification inactive class integrate class read kind of incoming notification background

public class mylistenerservices extends notificationlistenerservice{     public mylistenerservices() {     }      private boolean isrunning;     private context context;     private thread backgroundthread;      @override     public ibinder onbind(intent intent) {         return null;     }     @override     public void oncreate() {         this.context = this;         this.isrunning = false;         this.backgroundthread = new thread(mytask);     }      private runnable mytask = new runnable() {         public void run() {             // here             log.d("msg", "servicerunning");                      statusbarnotification[] statusbarnotifications     =    getactivenotifications();  log.d("msg", "new object2 "+statusbarnotificationsarray);                 if (statusbarnotifications.length > 0) {                     log.d("msg", "new object "+statusbarnotifications.length); //                     intent = new intent(context, automaticcameraactivity.class);                     i.setflags(intent.flag_activity_new_task);                     startactivity(i); //                } //            }catch (exception e){ //                log.d("msg",e.getmessage());             }             stopself();         }     };      @override     public void onnotificationposted(statusbarnotification sbn) {         notification mnotification=sbn.getnotification();         log.v("msg"," notification"+ mnotification);      }      @override     public void ondestroy() {         this.isrunning = false;     }      @override     public int onstartcommand(intent intent, int flags, int startid) {         if(!this.isrunning) {             this.isrunning = true;             this.backgroundthread.start();         }         return start_sticky;     } } 

any appreciated

thanks in advance

create pending intent

intent resultintent = new intent(this, resultactivity.class); //change resultactivity activity want invoke ... // because clicking notification opens new ("special") activity, there's // no need create artificial stack. pendingintent resultpendingintent =     pendingintent.getactivity(     this,     0,     resultintent,     pendingintent.flag_update_current ); 

more information in create notification