UITapGestureRecognizer的用法

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

    

    [self addGestureRecognizer:selfViewTap];//注意同一个点击手势不能添加到多个视图上

    selfViewTap.numberOfTapsRequired = 2;//点击次数
    selfViewTap.numberOfTouchesRequired = 2;//手指个数、单击


- (void)removeSelfView:(UITapGestureRecognizer *)selfTap{

 

    CGPoint selectPoint = [selfTap locationInView:self];

    NSLog(@"%@",[NSValue valueWithCGPoint:selectPoint]);

    //CGRectContainsPoint(CGRect rect, <#CGPoint point#>)判断某个点是否包含在某个CGRect区域内

    if(!CGRectContainsPoint(_bg_imageView.frame, selectPoint)){

        [self removeFromSuperview];

    }


}