View添加手势,防止View上点击其他视图触发点击效果

• 我们在红色view上添加了手势,但是又不想点击黄色view也触发.其实这里用到UITapGestureRecognizer的一个代理方法
  

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• 上代码,先创建两个view,并且给bigView添加手势

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self.bigView = [[UIView alloc]initWithFrame:CGRectMake(50, 50, 100, 100)];     self.bigView.backgroundColor = [UIColor redColor];     UITapGestureRecognizer *recognizer = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(bigMap:)];     recognizer.delegate = self;     [self.bigView addGestureRecognizer:recognizer];     [self.view addSubview:self.bigView];       self.smallView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 50, 50)];     self.smallView.backgroundColor = [UIColor yellowColor];     [self.bigView addSubview:self.smallView];

• 实现UITapGestureRecognizer的一个代理方法,我不用多说,大家一看就明白怎么回事了.这是就解决了防止点击黄色view也触发的问题了

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- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch{       if ([touch.view isDescendantOfView:self.smallView]) {         return NO;     }     return YES; }