通过uiimageview的tag为点击事件uitapgesturerecognizer传参

title: 通过UIImageView的tag为点击事件UITapGestureRecognizer传参 date: 2016-07-29 16:23 tags: iOS category: 技术笔记 —

为了点击图片时，知道哪张图片被点击，需要向 ` UITapGestureRecognizer ` 传递一个参数，此处使用了 ` UIImageView ` 的 ` tag ` 属性，直接将图片索引写入 ` imageview ` 的 ` tag ` ，然后通过 ` sender.view.tag ` 去获取图片索引。

UIImageView *imageview = [[UIImageView alloc] initWithImage: [UIImage imageNamed:@"tab-me-plese.png"]];
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(processTap:)];

[imageview setTag:i]; //set tag value
[imageview addGestureRecognizer:tap];
[imageview setUserInteractionEnabled:YES];

- (void)processTap:(UIGestureRecognizer *)sender
{
    NSLog(@"点击了第%ld张图片", sender.view.tag);    
}