iOS开发——给ImageView添加点击事件

   1:  cell.pictureView.userInteractionEnabled = YES;

   2:      UITapGestureRecognizer *gr = [[UITapGestureRecognizer alloc]initWithTarget:cell action:@selector(displayPicture:)];

   3:      gr.numberOfTapsRequired = 1;

   4:      gr.numberOfTouchesRequired = 1;

   1:  -(void)displayPicture:(UITapGestureRecognizer*)gr{

   2:      NSLog(@"%s----%@",__func__,gr);

   3:      [self.delegate displayPic:self.pictureView.image];

   4:  }