UITapGestureRecognizer选择器,sender是手势,而不是ui对象

Question

我有一系列的图像视图,我使用他们的标签识别.我为图像添加了一个轻击手势.

UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(selectImage:)];
[tableGridImage addGestureRecognizer:singleTap];
tableGridImage.userInteractionEnabled = YES;
[singleTap release];

这设法调用selectImage选择器ok,但将手势作为发送者传递.我需要将imageview作为发件人,这样我才能获得标签.

关于如何获得imageview及其标签的任何想法？

Answer 1

我想出了如何获取标签,这对我来说是问题中最重要的部分.由于手势是发件人,我发现附加的视图随之发送:

[(UIGestureRecognizer *)sender view].tag

如果有人能告诉我如何通过UITapGestureRecognizer选择器发送参数,我仍然很好奇.

Answer 2

您可以通过UITapGestureRecognizer选择器发送的唯一参数是UITapGestureRecognizer本身,如下所示:

确保在选择器名称之后加上" : ",就像之前一样:

UITapGestureRecognizer *singleTap = 
[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(selectImage:)];

然后向selectImage添加一个参数,以便您可以按如下方式检索View:

-(void) selectImage:(UITapGestureRecognizer *)gestureRecognizer{

    //Get the View
    UIImageView *tableGridImage = (UIImageView*)gestureRecognizer.view;
}