Question

我是新的应用。我想设计一个警示,有2个县:OK和Cancel。当用户触动OK,则我将打印以下信息:hello/code>。当它们触及<代码>Cancel纽扣时, 页: 1



请帮助;我如何这样做?

Answer 1

显示警示:

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Do you want to say hello?"
                                                message:@"More info..."
                                               delegate:self
                                      cancelButtonTitle:@"Cancel"
                                      otherButtonTitles:@"Say Hello",nil];
[alert show];
[alert release];

a. 应对任何纽特:

- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {
    if (buttonIndex == 0) {
        NSLog(@"Cancel Tapped.");
    }
    else if (buttonIndex == 1) {
        NSLog(@"OK Tapped. Hello World!");
    }
}

For more information, see AlertView Reference 和。

Answer 2

由于所选择的答案被解释,这里是新的解决办法:

UIAlertController* alert = [UIAlertController alertControllerWithTitle:@"My Alert"
                               message:@"This is an alert."
                               preferredStyle:UIAlertControllerStyleAlert];

UIAlertAction* defaultAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault
   handler:^(UIAlertAction * action) {}];

[alert addAction:defaultAction];
[self presentViewController:alert animated:YES completion:nil];

如。

Answer 3

显示警示和下列警示:

UIAlertView *alert = [[UIAlertView alloc]
   initWithTitle:@"Make an informed choice"
   message:nil
   delegate:self
   cancelButtonTitle:@"Cancel"
   otherButtonTitles:@"OK", nil];
[alert show];

当警报被解除时,该代表将自行决定。该代表必须执行《律师证明书》。

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

   if (buttonIndex == 1) {
      // Do it!
   } else {
      // Cancel
   }
}

Answer 4

<>目标C:

UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"My Alert"
            message:@"This is an action sheet." 
            preferredStyle:UIAlertControllerStyleAlert]; // 1
    UIAlertAction *firstAction = [UIAlertAction actionWithTitle:@"one"
            style:UIAlertActionStyleDefault handler:^(UIAlertAction * action) {
                NSLog(@"You pressed button one");
            }]; // 2
    UIAlertAction *secondAction = [UIAlertAction actionWithTitle:@"two"
            style:UIAlertActionStyleDefault handler:^(UIAlertAction * action) {
                NSLog(@"You pressed button two");
            }]; // 3

    [alert addAction:firstAction]; // 4
    [alert addAction:secondAction]; // 5

    [self presentViewController:alert animated:YES completion:nil]; // 6

<>Swift>

let alert = UIAlertController(title: "My Alert", message: "This is an action sheet.", preferredStyle: .Alert) // 1
    let firstAction = UIAlertAction(title: "one", style: .Default) { (alert: UIAlertAction!) -> Void in
        NSLog("You pressed button one")
    } // 2

    let secondAction = UIAlertAction(title: "two", style: .Default) { (alert: UIAlertAction!) -> Void in
        NSLog("You pressed button two")
    } // 3

    alert.addAction(firstAction) // 4
    alert.addAction(secondAction) // 5
    presentViewController(alert, animated: true, completion:nil) // 6

Answer 5

www.un.org/Depts/DGACM/index_spanish.htm 下面是几个展示方式。关于Pi的警报信息

请登录,用于更多样本和屏幕照相。

(包括来源代码的XCode项目)

Simple Action Sheet
OK/Cancel Action Sheet
Simple Alert

/ 与大韩民国一道发出警报,取消纽芬兰

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"UIAlertView"
        message:@"My message" delegate:self cancelButtonTitle:@"Cancel"
        otherButtonTitles:@"OK", nil];
[alert show];
[alert release];

Answer 6

对于你可以使用的精减产出(有时,由于在器件上投射时,而不是在X条码上投射时出现ug缩,你可能会使用安全记录仪):

#define MY_ALERT(str) [[[UIAlertView alloc] initWithTitle:@"System Alert" message:str delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil] show]

之后,在你的法典中,你可以做到:

MY_ALERT(NSStringFromCGRect(someView.frame))

Answer 7

UIAlertView * alert = [[UIAlertView alloc]initWithTitle:@"Hello world" message:@"This is an alert view" delegate:self cancelButtonTitle:@"ok" otherButtonTitles:nil];

In this way we create an object of class UIAlertView and set the title "Hello world" and the message "This is an alert view " and the title of button as ok. For a detail answer visit this blog

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