UIControl和setImage问题

Question

我有一个显示9个UIImageViews的应用程序，我正在尝试添加用户删除它们的功能。因此，我将其设置为全部，并为用户设置警报视图，以确认他们要删除他们所点击的图像。当我在警报视图中单击“是”时，应用程序崩溃，调试器指出：

2012-04-04 18：19：44.311 AppName [1857：f803] - [UIControl setImage：]：无法识别的选择器发送到实例0x6aac690

2012-04-04 18：19：44.312 AppName [1857：f803]由于未捕获的异常'NSInvalidArgumentException'而终止应用程序，原因：' - [UIControl setImage：]：无法识别的选择器发送到实例0x6aac690'< /强>

奇怪的是我在任何代码中都没有调用setImage。这是我正在使用的代码：

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)img editingInfo:(NSDictionary *)editInfo {
    if (imageView.image == nil) {
        imageView.image = img;

        self.array = [NSMutableArray arrayWithObject:[NSData dataWithData:UIImagePNGRepresentation(imageView.image)]];

        [picker dismissModalViewControllerAnimated:YES];
        [self.popover dismissPopoverAnimated:YES];
        return;

    }

    if (imageView2.image == nil) {
        imageView2.image = img;
        NSLog(@"The image is a %@", imageView);
        [self.array addObject:[NSData dataWithData:UIImagePNGRepresentation(imageView2.image)]];

        [picker dismissModalViewControllerAnimated:YES];
        [self.popover dismissPopoverAnimated:YES];
        return;
    }

    }

.....

 - (IBAction)deleteButtonPressed:(id)sender {
        NSLog(@"Sender is %@", sender);
        UIAlertView *deleteAlertView = [[UIAlertView alloc] initWithTitle:@"Delete"
                                                                  message:@"Are you sure you want to delete this photo?"
                                                                 delegate:self
                                                        cancelButtonTitle:@"No"
                                                        otherButtonTitles:@"Yes", nil];
        [deleteAlertView show];
        int imageIndex = ((UIButton *)sender).tag;
        deleteAlertView.tag = imageIndex;

    }

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


        if (buttonIndex != [alertView cancelButtonIndex]) {
            NSLog(@"User Clicked Yes. Deleting index %d of %d", alertView.tag, [array count]);
            NSLog(@"The tag is %i", alertView.tag);
            [self.array removeObjectAtIndex: alertView.tag];
            NSLog(@"After deleting item, array count  = %d", [array count]);
        NSLog(@"Returned view is :%@, in view: %@", [self.view viewWithTag:alertView.tag], self.view);
            ((UIImageView *)[self.view viewWithTag:alertView.tag]).image =nil;
        }

        [self.user setObject:self.array forKey:@"images"];
    }

我添加了断点，导致崩溃的行似乎是：

((UIImageView *)[self.view viewWithTag:alertView.tag]).image =nil; 该行的目的是从UI中删除图像。我不确定为什么该行导致此错误，但代码似乎是正确的。有问题的nib文件是一个UIControl，而不仅仅是一个UIView，所以这可能是问题所在。非常感谢任何帮助或建议，谢谢！

Answer 1

事实证明我的标签搞砸了。我在UIImageView上标记了隐形按钮，忘记它不是真正的UIImageView。这解释了所有的怪异。我这次按照UIButtons标记了实际的UIImageViews，现在工作正常。感谢大家的帮助。

Answer 2

UIControl没有图像属性。您错误地将imageView视为UIControl