How to implement a loading animation when navigating in a iPhone app?

Question

It seems like a pretty simple problem, but I have been unable to find any good answers.

What I\'m trying to do is to make some sort of animation while some function is l

Answer 1

you can add an UIActivityIndicatorView as a subview to a view and when the action is over you can remove it from superview...

UIActivityIndicatorView  *av = [[[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray] autorelease];
av.frame=CGRectMake(145, 160, 25, 25);
av.tag  = 1;
[yourView addSubview:av];
[av startAnimating];

removing it

UIActivityIndicatorView *tmpimg = (UIActivityIndicatorView *)[yourView viewWithTag:1];
[tmpimg removeFromSuperview];

hope it helps...