objective-c - 想問對於UIView想做Tap點擊事件監控，攔截哪個方法呢？

Question

在做UIButton事件攔截的時候，我知道button點擊後會執行sendAction:to:forEvent:方法，所以我可以hook這個方法做些其他事，那UIView的Tap事件，該攔截哪個方法呢？

Answer 1

如下程式碼所新增的tap 事件

self.backgroundTapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleBackgroundTapGesture:)];
self.backgroundTapRecognizer.delegate = self;
[self.maskView addGestureRecognizer:self.backgroundTapRecognizer];

可以用shouldReceiveTouch 攔截

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
    if ([touch.view isDescendantOfView:self.popupView]) { //判断条件，比如是popView
    //NSLog(@"NO");
        return NO; //点击无效
    }
    return YES;
}