@property(nonatomic,readonly) NSInteger numberOfButtons;
@property(nonatomic) NSInteger cancelButtonIndex;      // if the delegate does not implement -alertViewCancel:, we pretend this button was clicked on. default is -1
@property(nonatomic,readonly) NSInteger firstOtherButtonIndex;// -1 if no otherButtonTitles or initWithTitle:... not used

 

- (UITextField *)textFieldAtIndex:(NSInteger)textFieldIndex NS_AVAILABLE_IOS(5_0);

 

- (NSInteger)addButtonWithTitle:(NSString *)title;    // returns index of button. 0 based.
- (NSString *)buttonTitleAtIndex:(NSInteger)buttonIndex;

 

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex;

 

示例：

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    NSString *buttonTitle = [alertView buttonTitleAtIndex:buttonIndex];
   
    if ([buttonTitle isEqualToString:[self cancelButtonTitle]]) {
        NSLog(@"User pressed the Cancel button");
    } else {
        NSLog(@"User pressed the Ok button");
    }
   
}