UIScrollView和内容需要触摸移动事件 [英] UIScrollView and content with requires touch move events

问题描述

我有一个视图，该视图使用单点触摸事件(单指)进行绘制(线条，循环，文本等).现在，我想将此视图放入UIScrollView内，这将允许缩放和平移.当然，需要两个手指来执行缩放和平移.

I have a view which is using single touch events (single finger) for drawing (lines, cycles, text, and so on). Now I want to put this view inside of UIScrollView, which will allow zooming and panning. Of course two fingers are required to perform both zooming and panning.

这样做的模式是什么?当UIScrollView的内容仅接受单击(仅包含按钮)时，我仅找到了一些示例.当内容也需要触摸动作时，什么也不做.

What is the pattern do do that? I've found only examples when contents of UIScrollView accepts only single clicks (it contains only a buttons). Nothing what to do when contents require also touch moves.

推荐答案

访问UIScrollView上的panGestureRecognizer属性，并将其minimumNumberOfTouches属性设置为两个:

Access the panGestureRecognizer property on the UIScrollView, and set its minimumNumberOfTouches property to two:

myScrollView.panGestureRecognizer.minimumNumberOfTouchesRequired = 2;

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