android - Is it possible to bind an activities to this service which works on background thread and always running? -

it's first question on so, hope question won't bad.

i have service, starts working when user launchs app , works until user kill via task killer or turn off device.

this service has background thread work data. need bind activities (from activities, not service) , (1-2 times per 30 seconds) send data binded activities.

structure of service:

public class myserv extends service {   public static boolean started=false;   public class workwithdata extends thread {     @override     public synchronized void start() {       super.start();       //.. not important.     }     @override     public void run() {       if (running) return;       while (true) {         if(condition) mythread.sleep(30000);         else {           object data = recievemydata();           if (!data.isempty()) {             //.. work recieved data, not important.             senddatatobindedactivities(data); //this need.           }           mythread.sleep(10000);         }       }     }   }   @override   public void oncreate() {     super.oncreate();     this.started=true;     mythread = new workwithdata();     mythread.start();   } } 

well, found 1 question problem has little differences: don't need send data service, need send data binded activities (which service doesn't know @ all).

structure i'm looking for:

public class myact extends activity {   @override   public void oncreate(bundle bun) {     super.oncreate(bun);     if(!myserv.started) {       intent service = new intent(getapplicationcontext(), myserv.class);       getapplicationcontext().startservice(service);     }     bindtoservice(this);   }   @override   public void onrecieveddata(object data) {     //work recieved data service "myserv".   } } 

i tried find solutions in android documentation didn't find need.

so, main question is: is possible work communications service activities?. if no: what should use purpose? if yes, just, sorry, can ask code or class names, because tried find , didn't...

thank you.

you need use remotecallbacklist

when clients bind service, need register them using remotecallbacklist.register().

when want send data bound clients, this:

int count = callbacklist.beginbroadcast(); (int = 0; < count; i++) {     try {         imyservicecallback client = callbacklist.getbroadcastitem(i);         client.onrecieveddata(thedata); // here callback bound client's method                                   //  onrecieveddata() , pass "thedata"     } catch (remoteexception e) {         // can safely ignore exception. remotecallbacklist take care         //  of removing dead object us.     } catch (exception e) {         // not can here except log         log.e("while calling remote client", e);     } } callbacklist.finishbroadcast(); 

an example can found here kinda complicated, maybe don't need offers. in case, have look.