UIAlertview不会记录结果

Question

如果用户在alertView上按了OK，我想记录，但它什么也没做......这是我的检查：

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    if (buttonIndex == 0) { NSLog(@"user pressed OK"); }
}

也在我的@interface：

@interface FirstViewController : UIViewController<UIWebViewDelegate, UIAlertViewDelegate>

这是我的alertView：

UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Oeps..."
                                            message:@"This is just a random message."
                                            delegate:nil
                                            cancelButtonTitle:@"OK"
                                            otherButtonTitles:nil];
[alertView show];

有没有人看到这个问题？我试图在NSLog之外做if buttonIndex，但也不会记录..

由于

Answer 1

而不是委托为nil，将您的委托指定为自己

Answer 2

使用以下内容：

UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Oeps..."
                                        message:@"This is just a random message."
                                        delegate:self
                                        cancelButtonTitle:@"OK"
                                        otherButtonTitles:nil];
[alertView show];

Answer 3

检查您将代表传递给nil的代表。将它传递给自我，这就是发生这种情况......

像这样

UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Oeps..."
                                            message:@"This is just a random message."
                                            delegate:self
                                            cancelButtonTitle:@"OK"
                                            otherButtonTitles:nil];
[alertView show];