在iphone sdk 4.3中单击按钮的警报消息

概述我是 xcode编程的初学者.当我们要点击xcode- iphone-4.3中的按钮时,请告诉我如何显示警告信息 我的守则如下, - (IBAction)buttonPressed:(id)sender{ UIAlertView* mes=[[UIAlertView alloc] initWithTitle:@"Hello World!!!!!!" 我是 xcode编程的初学者.当我们要点击xcode- iphone-4.3中的按钮时,请告诉我如何显示警告信息

我的守则如下,

- (IBAction)buttonpressed:(ID)sender{    UIAlertVIEw* mes=[[UIAlertVIEw alloc] initWithTitle:@"Hello World!!!!!!"                                                     message:@"This is the Iphone app" delegate:self cancelbuttonTitle:@"Ok" otherbuttonTitles: nil];    [mes show];    [mes release];

请帮我解决这个问题.

解决方法

-(IBAction)buttonOnepressed:(ID)sender {     UIAlertVIEw *alert = [[UIAlertVIEw alloc]initWithTitle: @"Clicked button 1"                  message: @"Alert Message here"                  delegate: self                  cancelbuttonTitle:@"Cancel"                  otherbuttonTitles:@"OK",nil];     [alert setTag:1];     [alert show]; }-(IBAction)buttonTwopressed:(ID)sender {     UIAlertVIEw *alert = [[UIAlertVIEw alloc]initWithTitle: @"Clicked button 2"                  message: @"Alert Message here"                  delegate: self                  cancelbuttonTitle:@"Cancel"                  otherbuttonTitles:@"OK",nil];     [alert setTag:2];     [alert show]; }

下面是跟踪AlertvIEw上的哪个按钮的委托方法.

-(voID)alertVIEw:(UIAlertVIEw *)alertVIEw clickedbuttonAtIndex:(NSInteger)buttonIndex      {     if (alertVIEw.tag == 1) { // UIAlertVIEw with tag 1 detected       if (buttonIndex == 0)        {            NSLog(@"user pressed button Indexed 0");            // Any action can be performed here       }       else        {            NSLog(@"user pressed button Indexed 1");            // Any action can be performed here       }     }    else if (alertVIEw.tag == 2) { // UIAlertVIEw with tag 2 detected       if (buttonIndex == 0)        {            NSLog(@"user pressed button Indexed 0");            // Any action can be performed here       }       else        {            NSLog(@"user pressed button Indexed 1");            // Any action can be performed here       }     }   }

如果您有多个UIAlertVIEws,可以将标记设置为UIAlertVIEw,并且可以使用其各自的标记确定在其委托方法clickedbuttonAtIndex中单击了哪个UIAlertVIEw按钮.

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