Explain Android chart mpandroidchart line chart in detail

1. Introduction

Mpadroidchart GitHub address

There is no more to say about the strength of mpadroidchart. At present, the latest version is 3.0.1. In the new version, many methods have been abandoned. Note that most of the information found on the Internet is about the old version. Today, let's implement the line chart, record the process and share it with you.

design sketch:

2. Introduce open source library

Add the following code to the build.gradle file in the root directory of the project

Add dependencies in the build.gradle file in the app root directory

3. Realization

In the project, I extracted the functions related to charts into a tool class chartutils.

Initialize chart

The initchart method is used to set the function and display style of the chart. The method annotates the scaling and animation code. If you want to use animation, you do not need to call the invalidate method of the chart 。

Set chart data

The setchartdata method is used to set the data displayed in the chart and the properties of polylines.

Update chart

The notifydatasetchanged method is used to update the chart and dynamically display the x-axis label.

X-axis data processing

The xvaluesprocess method is used to process X-axis data.

The x-axis can display three types of data: today's data, this week's data and this month's data.

Use in activity

Layout file

4. Problems encountered

5. Write at the end

In the process of implementation, the issues of mpadroidchart helped a lot. Many people encountered the same problem as me. They didn't have the habit of consulting issues and got a new skill.

Official documents

Full demo download

The above is the whole content of this article. I hope it will be helpful to your study, and I hope you can support programming tips.