如何使UIImageView.clipsToBounds = NO允许userInteraction超出边界？

Question

我目前拥有UIImageView.clipsToBounds = NO;并且效果很好，但我需要启用userInteraction，这样如果触摸了子视图，我就可以回复触摸。任何人都知道如何保留UIImageView.clipsToBounds = NO;但仍然允许用户在界限之外进行交互？

Answer 1

你必须实现UIGestureRecognizerDelegate的方法。

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
    if (touch.view != YourImageView) { // accept only touchs on superview, not accept touchs on subviews
        return NO;
    }
    return YES;
}

Answer 2

启用UIImageView用户互动默认UIImageView userInteration将被禁用。

yourImageView.userInteractionEnabled = YES;

Answer 3

处理点击UIImageView的剪切边界的操作。在UIImageView的superview类上实现tochesBegan:withEvent:。检查触摸位置是否在imageView边界的范围内，然后点击该位置。为实现此目的，请执行以下操作：

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    CGPoint point = [[touches anyObject] locationInView:self.imageView];
    if(CGRectContainsPoint(self.imageView.bounds, point)) {
        // Your code on tap of UIImgeView.
        NSLog(@"image view is tapped");
    }
}

这可能会对你有帮助。