核心图框架-如何在CPTPlotSpaceAnnotation中设置自定义UIView [英] core plot Framework - How to set custom UIView in CPTPlotSpaceAnnotation

问题描述

如果要按下图形符号，我想使用 scatterPlot：plotSymbolWasSelectedAtRecordIndex：方法在图形中设置带有标签出口的自定义uiview。

I want to set a custom uiview with label outlets in my graph, if a plot symbol was pressed, using the scatterPlot:plotSymbolWasSelectedAtRecordIndex: method.

但是我如何给绘图区域UIView或如何重写CPTLayer来绘制我的自定义UIView？

But how can I give the plot area the UIView or how can I override CPTLayer to draw my custom UIView?

谢谢

推荐答案

CPTLayer 是 CALayer ，因此您不能仅将自定义 UIView 用作核心图注释。但是，您可以将自定义视图作为Core Plot托管视图（不是子视图！）的同级插入。使用绘图空间获取绘图区域中触摸数据点的坐标，并使用内置的 CALayer 方法将坐标从绘图区域图层转换为图形层。

CPTLayer is a subclass of CALayer, so you can't just use the custom UIView as a Core Plot annotation. However, you could insert your custom view as a sibling of the Core Plot hosting view (not a subview!). Use the plot space to get the coordinates of the touched data point in the plot area and use the built-in CALayer methods to convert the coordinates from the plot area layer to the graph layer.

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