将参数发送到AlertView

Question

我有一个委托,它会收到一条消息,删除一个以该项为参数的项目.我想显示确认AlertView,然后,如果用户按是,我想删除它.

所以,我拥有的是

被调用的委托方法:

- (void) deleteRecording:aRecording(Recording*)aRecording {

     NSLog(@"Cancel recording extended view");
     UIAlertView *alert = [[UIAlertView alloc]
                      initWithTitle: NSLocalizedString(@"Cancel recording",nil)
                      message: NSLocalizedString(@"Are you sure you want to cancel the recording?",nil)
                      delegate: self
                      cancelButtonTitle: NSLocalizedString(@"No",nil)
                      otherButtonTitles: NSLocalizedString(@"Yes",nil), nil];
    [alert show];
    [alert release];

}

并且检查按下了哪个按钮的方法:

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

    switch (buttonIndex) {
        case 0:
        {
            NSLog(@"Delete was cancelled by the user");
        }
        break;

        case 1:
        {

            NSLog(@"Delete deleted by user");
        }


    }

}

所以,我的问题是,如何将aRecording参数从第一种方法发送到第二种方法呢？

非常感谢

Answer 1

1. 将该变量存储在成员变量中(最简单的解决方案)

2. 如果只传递int变量,则可以设置AlertView标记属性.

    myAlertView.tag  = YOUR_INT;
   

3. 根据文件,

   注意:UIAlertView类旨在按原样使用,不支持子类化.此类的视图层次结构是私有的,不得修改.

   因此,仅当您不打算将应用程序提交到应用程序商店时,请使用第3种方法.感谢用户soemarko ridwan的提示.

   为了传递复杂对象,子类UIAlertView,添加一个对象属性

   @interface CustomAlertView : UIAlertView
   @property (nonatomic, retain) id object;
   @end
   
   @implementation CustomAlertView
   @synthesize object;
   - (void)dealloc {
       [object release];
       [super dealloc];
   }
   @end
   

   创建AlertView时

    CustomAlertView *alert = [[CustomAlertView alloc]
                     initWithTitle: NSLocalizedString(@"Cancel recording",nil)
                     message: NSLocalizedString(@"Are you sure you want to cancel the recording?",nil)
                     delegate: self
                     cancelButtonTitle: NSLocalizedString(@"No",nil)
                     otherButtonTitles: NSLocalizedString(@"Yes",nil), nil];
   [alert setObject:YOUR_OBJECT];
   [alert show];
   [alert release];
   

   在代表中

   - (void)alertView:(TDAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {
        NSLog(@"%@", [alertView object]);
   }