The idea of implementing charts chart view in all swiftui versions (1.0-4.0) was born

functional requirement

Sometimes a monotonous list of numbers does not show the difference between values , We hope to show them with more expressive charts .

And until SwiftUI 4.0,Apple To introduce Charts The native framework is used to draw diagrams .

that , How to in the lower version SwiftUI Zhongyuan realizes the chart view ？

As shown above , We are SwiftUI 1.0 Without the help of any third-party libraries , The native implements a histogram , At the same time, it takes into account the display performance under massive data .

In this blog post , You will learn the following ：

• SwiftUI 4.0 How to draw charts in ？
• SwiftUI 2.0 and 3.0 How to draw charts in ？
• SwiftUI 1.0 How to draw charts in ？

Please fasten your seat belts , This trip will be wonderful .

Let’s start sailing!

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Functional analysis

0. Preface

as everyone knows , Charts have many display styles ： Histogram 、 The pie chart 、 Lines, etc .

This blog post aims to introduce a kind of general killing SwiftUI Implementation ideas of various versions of charts . For the sake of simplicity , The following codes take the histogram as an example .

You can draw inferences from one instance .