title: Background Asihttp requests
body: <p>I need to submit multiple json datas(say 10) to the server using asihttp request .
  These 10 files are stored in my cache folder.when the requestfinished delegate get called i remove the corresponding file from the cache folder . It works fine in my current view . But i have to wait for sometime. I need to perform this task in background and move to another viewcontroller  But it causes crash due to the delegates methods being called of the past view.
  How can i fix this problem.Help me if any idea.</p>