給手勢UITapGestureRecognizer綁定tag

今天用到給手勢綁定tag,在網上搜了一些,但大多數都是下面這一種:


UITapGestureRecognizer *singleTap =
        [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(whenClickImage:)];
        [_firstImage addGestureRecognizer:singleTap];
        UIView *singleTapView = [singleTap view];
        singleTapView.tag = 0;
        [singleTap release];
 
-(void)whenClickImage:(id)sender
{
    UITapGestureRecognizer *singleTap = (UITapGestureRecognizer *)sender;
    NSLog(@"%d",[singleTap view].tag]);
}



上面這種方式tag始終都是0,最後在我多次嘗試和蒐集,找到了一種

UIImageView *personImage = [[UIImageView alloc] init];

personImage.tag = 1;  //在添加手勢的時候給他自身設置tag值

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

[personImage addGestureRecognizer:personImageTapGestureRecognizer];



- (void)personImageTapGestureRecognizer:(UITapGestureRecognizer *)gesture {

    

   UITapGestureRecognizer *singleTap = (UITapGestureRecognizer *)sender;

   NSLog(@"====%d",gesture.view.tag);   //personImage的tag

}

其實給UITapGestureRecognizer是沒有tag屬性,但他有UIView的屬性,我們可以通過給UIView添加tag屬性,從而標記UITapGestureRecognizer。
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