颤振羽毛三角格式显示到小部件?

您可以使用Quill来显示JSON。

class ExampleView extends StatelessWidget {
  const ExampleView({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    QuillController _controller = QuillController(
        document: Document.fromJson(YOUR_JSON),
        selection: const TextSelection.collapsed(offset: 0));
    return QuillEditor.basic(
      controller: _controller,
      readOnly: true, // true for view only mode
    );
  }
}