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。