Xcode11，iOS13系统下滑动卡顿严重

[ElvistLui]

非常感谢您的项目，对我受益颇丰。
现在Xcode11，iOS13系统下，这个项目滑动起来非常卡顿，已经无法正常使用了。

[ElvistLui]

解决了，改下UIGestureRecognizerDelegate就可以了。

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