ios - 添加一个简单的 UIAlertView

Question

我可以使用哪些入门代码来制作一个带有一个“确定”按钮的简单 UIAlertView？

Answer 1

当您希望显示警报时，请执行以下操作:

    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"ROFL" 
                                                    message:@"Dee dee doo doo." 
                                                    delegate:self 
                                                    cancelButtonTitle:@"OK" 
                                                    otherButtonTitles:nil];
[alert show];

    // If you're not using ARC, you will need to release the alert view.
    // [alert release];

如果您想在单击按钮时执行某些操作，请实现此委托(delegate)方法:

- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {
    // the user clicked OK
    if (buttonIndex == 0) {
        // do something here...
    }
}

并确保您的委托(delegate)符合 UIAlertViewDelegate 协议(protocol):

@interface YourViewController : UIViewController <UIAlertViewDelegate>