Question 1

Is flutter_echarts still maintained?

Accepted Answer

No, the project has been archived by the author, who recommends switching to native chart libraries like Graphic for ongoing support and better performance in new projects.

Question 2

How to add custom themes to Flutter ECharts?

Accepted Answer

Download a theme script from the ECharts website or build your own, copy it as a raw string into the extensions property, and register the theme name using the theme parameter for instant application.

Question 3

Can Flutter ECharts work with ListView without scrolling issues?

Accepted Answer

Yes, but you must carefully configure captureHorizontalGestures and captureVerticalGestures—setting captureAllGestures to true will disable ListView scrolling, requiring manual adjustment.

Question 4

What's the performance cost of using WebView for charts in Flutter?

Accepted Answer

WebView-based charts may cause slower rendering, increased battery drain, and higher memory usage, especially with complex 3D visualizations or on older mobile devices.

Question 5

Flutter ECharts vs Graphic: which is better for new projects?

Accepted Answer

Flutter ECharts offers ECharts' vast features via WebView but is archived. Graphic is a native alternative with active development, better performance, and Flutter integration, though it might have fewer pre-built chart types.

Question 6

How to handle click events on charts in Flutter ECharts?

Accepted Answer

Use the extraScript property to add JavaScript event listeners (e.g., chart.on('click', ...)), then process the messages in Flutter via the onMessage callback for interactive responses.

Echarts

What is Echarts?

Overview

Use Cases

Best For

Related Projects

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Pros & Cons

Pros

Cons

Frequently Asked Questions