镇楼图.jpg
- 在开发过程中,我们可能会遇到这个问题. 当我们给一个
view添加了手势,但是我们又不想点击view上面的视图也触发手势.如下图:
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
0.png
- 上代码,先创建两个
view,并且给bigView添加手势
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
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch{
if ([touch.view isDescendantOfView:self.smallView]) {
return NO;
}
return YES;
}
是不是很简单啊.最后送大家一个我自己用无人机拍摄的小视频.
