Making a loading page (waiting view) for iPhone apps and games

I have seen quite number of games in Iphone. I开发者_开发百科 see there is loading page (waiting view) when the scenes switch. Like scene A goes to scene B, it takes time to load right? but to let the user know so the developer put the waiting view. I am not sure how to do it. I am still new with that, just built one game, and there are still problems, I think that will help me. So anyone knows please share with me your knowledge.

Thank you in advance

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you can create some viewController class to represent your waiting screen logic, then just use presentModalViewController:animated: method to show it. when you don't need it, just call dismissModalViewControllerAnimated: method.

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You can use UIActivityIndicatorView control. See following
http://developer.apple.com/iphone/library/documentation/UIKit/Reference/UIActivityIndicatorView_Class/Reference/UIActivityIndicatorView.html