iPhone 中带有两个按钮的 UIAlertView

发布于 2024-09-13 13:07:07 字数 714 浏览 2 评论 0原文

我试图在按下按钮时显示警报视图，因此我编写了如下代码：

- (IBAction)signUpComplete: (id)sender {
  UIAlertView* alert_view = [[UIAlertView alloc]
      initWithTitle: @"test" message: @"test" delegate: nil cancelButtonTitle: @"cancel" otherButtonTitles: @"OK"];
  [alert_view show];
  [alert_view release];
}

但是此代码在 initWithTitle 方法中出现以下异常而崩溃：

2010-08-11 03:03:18.697 Polaris[1155:207] *** -[UIButton copyWithZone:]：无法识别的选择器发送到实例 0x176af0
2010-08-11 03:03:18.700 Polaris[1155:207] *** 由于未捕获的异常而终止应用程序

0x176af0 而终止应用程序与参数“sender”的值相同，即操作处理程序为“signUpComplete:”的按钮。我认为问题在于 otherButtonTitles: 参数，因为它与参数 nil 一起工作正常。所以创建“确定”按钮时遇到问题。我的代码有什么问题吗？

谢谢！

原文

I'm trying show an alert view when a button was pressed, so I wrote code as follows:

- (IBAction)signUpComplete: (id)sender {
  UIAlertView* alert_view = [[UIAlertView alloc]
      initWithTitle: @"test" message: @"test" delegate: nil cancelButtonTitle: @"cancel" otherButtonTitles: @"OK"];
  [alert_view show];
  [alert_view release];
}

But this code crashes with the following exception in the initWithTitle method:

2010-08-11 03:03:18.697 Polaris[1155:207] *** -[UIButton copyWithZone:]: unrecognized selector sent to instance 0x176af0
2010-08-11 03:03:18.700 Polaris[1155:207] *** Terminating app due to uncaught exception

0x176af0 is the same as the value of the argument 'sender', which is the button whose action handler is signUpComplete:. I think the problem is the otherButtonTitles: parameter, because it works fine with the argument nil. So it has a problem with creating the OK button.
Is there anything wrong with my code?

Thanks!

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待天淡蓝洁白时 2024-09-20 13:07:42

otherButtonTitles 列表必须以 nil 结尾：

UIAlertView* alert_view = [[UIAlertView alloc]
      initWithTitle: @"test" message: @"test" delegate: nil 
      cancelButtonTitle: @"cancel" otherButtonTitles: @"OK", nil];

otherButtonTitles list must be nil-terminated:

UIAlertView* alert_view = [[UIAlertView alloc]
      initWithTitle: @"test" message: @"test" delegate: nil 
      cancelButtonTitle: @"cancel" otherButtonTitles: @"OK", nil];

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