flutter -如何随机小部件序列/顺序

import 'dart:math';
import 'package:flutter/material.dart';

class RandomWidgetSequence extends StatefulWidget {
  @override
  _RandomWidgetSequenceState createState() => _RandomWidgetSequenceState();
}

class _RandomWidgetSequenceState extends State<RandomWidgetSequence> {
  List<Widget> widgets = [
    Container(color: Colors.red, height: 100),
    Container(color: Colors.blue, height: 100),
    Container(color: Colors.green, height: 100),
    Container(color: Colors.yellow, height: 100),
    Container(color: Colors.orange, height: 100),
  ];

  @override
  Widget build(BuildContext context) {
    // 随机排序小部件列表
    widgets.shuffle(Random());

    return ListView.builder(
      itemCount: widgets.length,
      itemBuilder: (context, index) {
        return widgets[index];
      },
    );
  }
}