iOS-三种禁止点击子视图的时候不响应父视图的点击事件的方法

案例说明：点击下图子控件，会触发父控件的点击事件

WechatIMG25623.jpeg

解决方法1：

给子控件添加空事件、或者子控件实例为UIButton,添加空事件

解决方法2：事件拦截

 tap.delegate = self;

#pragma mark - UIGestureRecognizerDelegate
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch{
    // self.contentView为子控件
    if ([touch.view isDescendantOfView:self.contentView]) {
        return NO;
    }
    return YES;
}

解决方法3：控制点击区域 使用RAC手势为例

    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]init];
    tap.delegate = self;
    [self addGestureRecognizer:tap];
    @weakify(self);
    [[tap rac_gestureSignal] subscribeNext:^(UITapGestureRecognizer *tap) {
        @strongify(self);
        if(CGRectContainsPoint(self.frame, [tap locationInView:self.contentView])) {
            // 相当于点击了子控件
        } else{
            // 相当于点击了父控件
        };
    }];