java - Sending data from Activity to Fragment from internet -

i have class contains 3 fragment data needs gathered same url. run nested async class(in activity) data url , store data in bundle each fragment like.

 bundle bundle = new bundle();         bundle.putstring("edttext", json.tostring());         infofragment fragobj = new infofragment();         fragobj.setarguments(bundle); 

before calling async class in fragment , working fine,but added 2 more fragments reduce number of url requests, calling async class activity class , distribute data 3 fragment class.

issue:fragment called before bundle set asynchronously , showing null bundle in fragment.

you can broadcast intent parent activity after response in onpostexeceute() of asynctask

@override protected void onpostexecute(object o) {     super.onpostexecute(o);     intent intent = new intent("key_to_identify_the_broadcast");     bundle bundle = new bundle();     bundle.putstring("edttext", json.tostring());     intent.putextra("bundle_key_for_intent", bundle);     context.sendbroadcast(intent); } 

and can receive bundle in fragment using broadcastreceiver class

private final broadcastreceiver mhandlemessagereceiver = new  broadcastreceiver() {     @override     public void onreceive(context context, intent intent) {         bundle bundle =              intent.getextras().getbundle("bundle_key_for_intent");             if(bundle!=null){                 string edttext = bundle.getstring("edttext");             }             //you can call of methods using bundle use case     } }; 

in oncreateview() of fragment need register broadcast receiver first otherwise broadcast receiver not triggered

intentfilter filter = new intentfilter("key_to_identify_the_broadcast"); getactivity().getapplicationcontext().                registerreceiver(mhandlemessagereceiver, filter); 

finally can unregister receiver avoid exceptions

@override public void ondestroy() {     try {           getactivity().getapplicationcontext().              unregisterreceiver(mhandlemessagereceiver);      } catch (exception e) {         log.e("unregister error", "> " + e.getmessage());     }     super.ondestroy(); } 

you can create separate broadcast receivers in of fragments , use same broadcast broadcast data of fragments. can use different keys different fragments , broadcast using particular key particular fragment.