How to display activity indicator in middle of the iphone screen?

Question

When we draw the image, we want to display the activity indicator. Can anyone help us?

Answer 1

UIActivityIndicatorView *activityView = [[UIActivityIndicatorView alloc]     
        initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];

    activityView.center=self.view.center;
    [activityView startAnimating];
    [self.view addSubview:activityView];