当scrollview滚动时，如何调用uipangesture？

Question

我想通过UIPanGestureRecognizer更改UIScrollView的中心。 滚动视图垂直滚动。 然后我将其水平平移。 问题是在scrollview仍在滚动时如何检测UIPanGestureRecognizer ？ 先感谢您！

Answer 1

编辑：您可以自定义您的UIScrollView并重写此方法：

#import "MyScrollView.h"

@implementation MyScrollView

- (BOOL)touchesShouldCancelInContentView:(UIView *)view
{
    return YES;
}

@end

---

self.panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePan:)];
self.panGesture.delegate = self;
[self.view addGestureRecognizer:self.panGesture];

- (void)handlePan:(UIGestureRecognizer *)gestureRecognizer
{
    if (gestureRecognizer.state == UIGestureRecognizerStateEnded) {
        CGPoint offset = self.scrollView.contentOffset;
        offset.y = self.scrollView.contentSize.height/2;
        self.scrollView.contentOffset = offset;
    }
}

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
    return YES;
}