在UIView中存储其他相关信息 [英] Store additional associated infomation in a UIView

问题描述

我一直在阅读很多关于SO的手势识别器 - 并设法编写了一个工作代码，当在UIImage上识别出长按时，会出现一个操作表：

I've been reading up a lot about Gesture Recognizers on SO - and have managed to write a working code which when a long-press is recognised on an UIImage, an action sheet appears:

{ ...
 UILongPressGestureRecognizer *longPressWall = [[[UILongPressGestureRecognizer alloc]
                                                               initWithTarget:self     action:@selector(deleteImage:)] autorelease];
                     longPressWall.minimumPressDuration = 0.4;
                     l.userInteractionEnabled=YES;
                     [l addGestureRecognizer:longPressWall];
... }


-(void)deleteImage:(UILongPressGestureRecognizer*)sender { 
    if(UIGestureRecognizerStateBegan == sender.state) {
        UIActionSheet *as = [[UIActionSheet alloc] initWithTitle:@"" delegate:self cancelButtonTitle:@"Close" destructiveButtonTitle:@"Delete Screenshot" otherButtonTitles: nil];
        [as showInView:masterView];
        [as release];
    }
}

因此，向选择器发送信息 deleteImage：在这种情况下有点棘手。
我想在调用deleteImage时向服务器发送HTTP请求，所以我需要从视图中获取一些信息。

So, sending information to the Selector deleteImage: is a little tricky in this situation. I want to send a HTTP request to a server when deleteImage is called, so I need some information from the view.

无论如何将信息存储到 UIImageView 并从 sender.view.myinfo （例如）中检索它？

Is there anyway to store information into the UIImageView and retrieve it from sender.view.myinfo (for example) ?

谢谢！

推荐答案

显而易见的方法是使用tag属性。如果您需要更多信息，您可以随时继承UIImageView并添加额外的属性。

The obvious way is to use the tag property. If you need more info you can always subclass the UIImageView and add an extra property.

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