iphone - UIActionSheet，取消按钮运行方法

Question

每次我在 UIActionSheet 中按下取消按钮时，它都会运行一个方法。我不知道为什么，我多次检查了整个代码，但我仍然看不到问题。你能帮我找到它吗？

-(IBAction)moreOptions
{

    giftTitle = self.title;

     if(![giftTitle isEqualToString:@"bla"])
     {
        actionSheet = [[UIActionSheet alloc]initWithTitle:giftTitle
                                                            delegate:self
                                                   cancelButtonTitle:@"Back"
                                              destructiveButtonTitle:nil
                                                   otherButtonTitles:@"Send via email",
                                  @"Read in Wikipedia"
                                  , nil];
     }
    else 
    {
        actionSheet = [[UIActionSheet alloc]initWithTitle:giftTitle
                                                 delegate:self
                                        cancelButtonTitle:@"Back"
                                   destructiveButtonTitle:nil
                                        otherButtonTitles:@"Send via email",
                       @"Read in Wikipedia", @"Pineapple mode"
                       , nil];

    }
    actionSheet.actionSheetStyle = UIActionSheetStyleDefault;
    [actionSheet showInView:self.view.window];

}

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{

    // выстраеваем дальнейшие действия кнопок

        switch (buttonIndex) 
        {
            case 0:
                [self showPicker];
            break;

            case 1:
                [self goWiki];
            break;

            case 2:
                [self showPineapple];
            break;

            default:
            break;

        }

}

因此它运行方法showPineapple。请帮忙!

Answer 1

是的，当您按下操作表上的取消按钮时，它的委托(delegate)函数总是会调用，并带有最后一个索引。

如果您要实现多个操作表，则只需按标记值使用它即可。