1：先遵守UIAlertViewDelegate
2：- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
if (buttonIndex==0) {
NSLog(@"你点击了取消");
}else if (buttonIndex==1){
[self.myOverButton setTitle:@"已结束" forState:UIControlStateNormal];
NSLog(@"你点击了确定");
}
}
原文：http://blog.csdn.net/darongzi1314/article/details/42741717