First of all Check This to understand what i am doing
I did not get my answer in above question & still waiting for it.
Now new porblem is that when i click on back button using following code, methods of last ViewController are still running. It will use memory & keep processing untill it gets response(that`s what i want to do but if user press back then i want to stop all methods)
[self.navigationController popViewControllerAnimated:YES];
How do i stop it?