android - fetching contacts using background thread crashes the app -

android - fetching contacts using background thread crashes the app -

i using background thread(asynctask) fetch contacts phone & send server using post request works 50 100 contacts crashed if contacts more 500 or 1000, there other way processing

you should create service runs in background , pushes contacts server in batches.

you can solve issue 3 steps:

1.create class extending intentservice , in onhandleintent() method , phone call function pushes contacts server.

public class contactpushserive extends intentservice { @override protected void onhandleintent(intent intent) { pushcontacts(); } }

2.the function pushing contacts should create batches of contacts internally , force 1 batch @ time. can take batch size 50 contacts in 1 batch.

public static void pushcontacts() { int batch_size = 50; //create getcontactsfromos() fetch os contacts list<contact> contactslist = getcontactsfromos(); if (contactslist != null && contactslist.size() > 0) { // batching contact force (int = 0; < (contactslist.size() / batch_size) + 1; i++) { list<contact> sublist = null; if ((i + 1) * batch_size > contactslist.size()) { sublist = contactslist.sublist(i * batch_size, contactslist.size()); } else { sublist = contactslist.sublist(i * batch_size, (i + 1) * batch_size); } //push contacts server using pushcontacts(sublist); } } }

3.call service code :

//time after service should start , set 2 min long time = system.currenttimemillis() + (2l * 60 * 1000); //create intent invoke contactpushservice intent intent = new intent(context, contactpushserive.class); //start contactpushservice after 2 min using pending intent , setting alarm fire after 2 min pendingintent contactserviceintent = pendingintent.getservice(context, -15, intent, pendingintent.flag_cancel_current); alarmutils.setalarm(context, contactserviceintent, time);

android android-asynctask