IOS手势
UITapGestureRecognizer *doubleClick = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(PictureClick:)]; doubleClick.numberOfTapsRequired = 2; [m_viewImg addGestureRecognizer: doubleClick]; -(void) PictureClick: (UITapGestureRecognizer *)sender{ }