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Can someone explain how the delegate to a UIAlertView works? Is it automatically called or do I have to call it? Eg:
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
So long as you’re correctly setting the delegate property of the UIAlertView and implementing the protocol, it will be automatically called when a user clicks on a button in your alert.
Take a look at the projects listed under “Related sample code” at http://developer.apple.com/library/ios/#documentation/UIKit/Reference/UIAlertViewDelegate_Protocol/UIAlertViewDelegate/UIAlertViewDelegate.html to see it in action.