如何在应用程序(外部框架)中覆盖内部框架方法 [英] How to override internal framework method in application (outside framework)

问题描述

在Swift中进行子类化时，是否仍要覆盖内部框架方法? 前任. 超类

Is there anyway to override internal framework method when subclassing in Swift? Ex. Superclass

public class BarChartRenderer: ChartDataRendererBase {
   internal func drawDataSet(context context: CGContext, dataSet: BarChartDataSet, index: Int) {
             ...
   }
}

我想重写此方法以绘制与dataSet不同的图形(iOS图表)

and I want to override this method to draw differently that dataSet (iOS-Charts)

public class ESBarChartRenderer: BarChartRenderer {
   overide func drawDataSet(context context: CGContext, dataSet: BarChartDataSet, index: Int) {
             ...
   }
}

但是当我尝试覆盖Xcode时出现错误:

but when I'm trying to override Xcode gives me error:

方法不会覆盖其超类中的任何方法

Method does not override any method from its superclass

因为它是内部的.

还有一个我需要访问的内部变量，与上面的Xcode一样看不到它.

There is also one internal variable with I need access to and same as above Xcode can't see it.

推荐答案

您应该使用open关键字而不是public

You should use the open keyword instead of public

在此处检查访问控制: https://developer.apple.com/library/内容/文档/Swift/概念/Swift_Programming_Language/AccessControl.html

Check the the Access Control here: https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/AccessControl.html

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