Question

我有一个UIScrollView，其框架与包含视图控制器相同。

当滚动视图的缩放比例大于1时，从屏幕左侧50％开始从左向右滑动会导致interactivePopGestureRecognizer激活并关闭视图控制器。这仅在设备处于横向状态时才会发生。它在纵向时工作正常。

使用scrollview使这个手势正常工作是否需要特殊处理？

Answer 1

1，将interactivePopGestureRecognizer委托设置为self（Custom UINavigationController）

self.interactivePopGestureRecognizer.delegate = self;

2，启用同时识别UIScrollView UIGestureRecognizer

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
    if (self.interactivePopGestureRecognizer == gestureRecognizer) {
        if ([otherGestureRecognizer.view isKindOfClass:UIScrollView.class]) {
            UIScrollView *scrollView = (UIScrollView *)otherGestureRecognizer.view;
            if ((scrollView.contentSize.width > CGRectGetWidth(self.view.bounds) && scrollView.contentOffset.x == 0)) {
                return YES;
            }
        }
    }

    return NO;
}

Answer 2

第1步： @implementation UIScrollView（AllowPanGestureEventPass）

 - (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
 if ([gestureRecognizer isKindOfClass:[UIPanGestureRecognizer class]]
      && [otherGestureRecognizer isKindOfClass:[UIScreenEdgePanGestureRecognizer class]])
  {
      return YES;
  }
 else
 {
     return  NO;
 }
}

第2步： [_scrollView.panGestureRecognizer requireGestureRecognizerToFail:screenEdgePanGestureRecognizer];

interactivePopGestureRecognizer会干扰UIScrollView

2 个答案: