使用 UIScrollView 时第二个 UIScrollView 响应
这更多的是一种检查，因为我相信这是正确的，但如果我错了，那就需要做很多工作。
我想基本上用滚动视图实现固定定位。我希望顶部有一个始终可见的列表，仅水平滚动，然后在其下方有一个滚动视图，以围绕垂直和水平滚动的信息移动。
我想我需要子类化 UIScrollView 并覆盖touchesBegan、touchesMoved 和touchesEnded 将触摸发送到两个UIScrollView。
这是正确的还是偏离轨道的？
干杯
This is more of a check as I believe this is right but its a lot of work if I'm wrong.
I want to basically achieve fixed positioning with a scrollView. I want to have a list along the top that is always visible, scrolls horizontal only and then a scrollview beneath that to move around the information which scrolls both vertically and horizontally.
I figure I need to subclass UIScrollView and overwrite touchesBegan, touchesMoved and touchesEnded to send the touch to both UIScrollViews.
Is this right or off track?
Cheers
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覆盖滚动视图上的触摸事件可能不是您想要做的。相反，您可以简单地使用单个滚动视图，然后在父视图的 -layoutSubviews 或滚动视图的委托方法中，您可以移动列表，使其始终处于相同的垂直位置（使用滚动视图的
contentOffset属性来确定它应该在哪里）。委托方法和 -layoutSubviews 都会在滚动视图滚动后实际发生绘制之前调用，因此通过始终将视图重新定位到您想要的位置，它对于用户来说似乎保持固定。Overriding the touch events on a scroll view is probably not what you want to do. Instead you can simply use a single scroll view, and then in the parent view's -layoutSubviews or in the scroll view's delegate methods you can move the list so it's always at the same vertical position (use the scroll view's
contentOffsetproperty to determine where that should be). Both the delegate method and -layoutSubviews is called before the drawing actually occurs after the scroll view scrolls, so by always repositioning your view where you want it to be, it will appear to remain fixed to the user.