Question

I have used singleton class for activityIndicator.Then i will call that class where ever i want. No problem while loading but loading is not appearing while pushing to other viewcontroller.

 - (void)editBtntapped
 {
      [loading showLoadingView:self.view ForSubView:self.view];

      Screen_Participant_Edit *controller=[[Screen_Participant_Edit alloc]init];
      [self.navigationController pushViewController:controller animated:NO];
      [controller release];

 }

loading is the object of sigleton class.

Answer 1

You’ll have to show ActivityIndicator on the MAINWINDOW instead the UIVIewController.

- (void)editBtntapped
{
     [loading showLoadingView:appDelegate.window ForSubView:appDelegate.window];

     Screen_Participant_Edit *controller=[[Screen_Participant_Edit alloc]init];
     [self.navigationController pushViewController:controller animated:NO];
     [controller release];

}

What you are doing is adding the ActivityIndicator to the previous UIViewController and then pushing new UIViewController. So, the present UIViewController in which ActivityIndicator was placed disappears.