UIActionSheet - 類沒有實現'UIActionSheetDelegate'協議

我想用日期選取器來理解UiActionSheet。UIActionSheet - 類沒有實現'UIActionSheetDelegate'協議

獲取2個警告，我似乎無法清除，請參閱代碼部分末尾的代碼。

警告：語義問題：發送 'DeveloperTL *' 到不兼容的類型 'ID'

和

警告的參數：語義問題：發送 'DeveloperTL *' 不兼容類型的參數「 ID'

任何想法如何解決這些警告？

我從其他幾個例子複製的代碼：

define kPickerTag 200 
    define SelectButtonIndex 1 
    define CancelButtonIndex 2 
    NSString *strPrintDate; 


    - (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex { 
     if (buttonIndex != [actionSheet cancelButtonIndex]) { 

      //set Date formatter 
      NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; 
      [formatter setDateFormat:@"MM/dd/YYYY h:mm a"]; 

      //Gets our picker 
      UIDatePicker *ourDatePicker = (UIDatePicker *) [actionSheet viewWithTag:kPickerTag]; 

      NSDate *selectedDate = [ourDatePicker date]; 

      NSString *msg = [[NSString alloc] initWithFormat:@"The date that you had selected was, %@", [formatter stringFromDate:selectedDate]]; 
      [formatter release]; 

      UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Date" message:msg delegate:nil cancelButtonTitle:@"Dismiss" otherButtonTitles:nil]; 
      [alert show]; 
      [alert release]; 
      [msg release]; 
     } 
    } 




    -(void)willPresentActionSheet:(UIActionSheet *)actionSheet { 

     UIDatePicker *pickerView = [[UIDatePicker alloc] initWithFrame:CGRectMake(0, 50, 100, 116)]; 

     [pickerView setTag:kPickerTag]; 

     [pickerView setDatePickerMode:UIDatePickerModeDate]; 

     if(strPrintDate != @"" && strPrintDate != nil) 
     { 
      NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init]; 
      [dateFormat setDateFormat:@"MMM-dd-yyyy"]; 

      NSDate *pickerdate = [dateFormat dateFromString:strPrintDate]; 
      [pickerView setDate:pickerdate animated:YES]; 
      [dateFormat release]; 
     } 

     [actionSheet addSubview:pickerView]; 

     [pickerView release]; 

     NSArray *subViews = [actionSheet subviews]; 

     [[subViews objectAtIndex: SelectButtonIndex] setFrame:CGRectMake(20, 266, 280, 46)]; 
     [[subViews objectAtIndex:CancelButtonIndex] setFrame:CGRectMake(20, 317, 280, 46)]; 

    } 


    - (IBAction)butn1 { 



     UIActionSheet *asheet = [[UIActionSheet alloc] 
           initWithTitle:@"Pick the date you want to see." delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"Select", nil]; 

// THIS IS THE ERROR MESSAGE: 
// **warning: Semantic Issue: Sending 'DeveloperTL *' to parameter of incompatible type // 'id<UIActionSheetDelegate>'** 


     [asheet showInView:[self.view superview]]; 

     [asheet setFrame:CGRectMake(0, 117, 320, 383)]; 
     [asheet release]; 

    }

來源

2011-06-23 Mark Worsnop

你缺少。 – Smith3

你的類中，你正在使用UIActionSheet，需要UIActionSheetDelegate協議

使用如下在你的.h類確認。

@interface myClass: UIView <UIActionSheetDelegate> 
{ 

} 
@end

來源

2011-06-23 13:33:53 Jhaliya

感謝所有迴應...... !! –

在.h文件中在伴隨這個.m文件的.h文件中添加此

your interface :UIViewController<UIActionSheetDelegate>

來源

2011-06-23 13:34:06 Aravindhan

UIActionSheet - 類沒有實現'UIActionSheetDelegate'協議

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