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lib/06/01/main.dart

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+import 'package:flutter/material.dart';
+import 'pages/home_page.dart';
+
+
+
+void main() {
+  runApp(const MyApp());
+}
+
+class MyApp extends StatelessWidget {
+  const MyApp({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'Flutter Demo',
+      debugShowCheckedModeBanner: false,
+      theme: ThemeData(
+        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
+        useMaterial3: true,
+      ),
+      home:  const HomePage(),
+    );
+  }
+}
+
+

lib/06/01/pages/color_add_page.dart

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+import 'dart:math';
+
+import 'package:flutter/material.dart';
+
+class ColorAddPage extends StatefulWidget {
+  const ColorAddPage({super.key});
+
+  @override
+  State<ColorAddPage> createState() => _ColorAddPageState();
+}
+
+class _ColorAddPageState extends State<ColorAddPage> {
+  late Color _color;
+
+  @override
+  void initState() {
+    super.initState();
+    _color = randomColor;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    String text = '# ${_color.value.toRadixString(16)}';
+    return Scaffold(
+      appBar: AppBar(
+        title: Text('添加颜色'),
+        actions: [IconButton(onPressed: _selectColor, icon: Icon(Icons.check ))],
+      ),
+      body: Padding(
+        padding: const EdgeInsets.symmetric(horizontal: 16.0,vertical: 20),
+        child: Row(
+          children: [
+            Expanded(child: Text(text,style: TextStyle(color: _color,fontSize: 24,letterSpacing: 4),)),
+            Container(
+              margin: EdgeInsets.only(left: 10),
+              width: 40,
+              height: 40,
+              child: Icon(
+                Icons.sell_outlined,
+                color: Colors.white,
+              ),
+              decoration: BoxDecoration(
+                color: _color,
+                borderRadius: BorderRadius.circular(8),
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Random _random = Random();
+
+  Color get randomColor {
+    return Color.fromARGB(
+      255,
+      _random.nextInt(256),
+      _random.nextInt(256),
+      _random.nextInt(256),
+    );
+  }
+
+  void _selectColor() {
+    Navigator.of(context).pop(_color);
+  }
+}

lib/06/01/pages/home_page.dart

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+import 'package:flutter/material.dart';
+import 'color_add_page.dart';
+
+import '../../../common/components/colors_panel.dart';
+import '../../../common/pages/stl_color_page.dart';
+
+class HomePage extends StatefulWidget {
+  const HomePage({super.key});
+
+  @override
+  State<HomePage> createState() => _HomePageState();
+}
+
+class _HomePageState extends State<HomePage> {
+  final List<Color> _colors = [
+    Colors.red, Colors.black, Colors.blue, Colors.green, Colors.orange,
+    Colors.pink, Colors.purple, Colors.indigo, Colors.amber, Colors.cyan,
+    Colors.redAccent, Colors.grey, Colors.blueAccent, Colors.greenAccent, Colors.orangeAccent,
+    Colors.pinkAccent, Colors.purpleAccent, Colors.indigoAccent, Colors.amberAccent, Colors.cyanAccent,
+  ];
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(title:const Text('颜色主页')),
+      floatingActionButton: FloatingActionButton(
+        onPressed: _toAddPage,
+        child: const Icon(Icons.add),
+      ),
+      body: ColorsPanel(
+        colors: _colors,
+        onSelect: _selectColor,
+      ),
+    );
+  }
+
+  void _selectColor(Color color){
+    Route route = MaterialPageRoute(builder: (ctx) => StlColorPage(color: color));
+    Navigator.of(context).push(route);
+  }
+
+  void _toAddPage() async {
+    Route<Color> route = MaterialPageRoute<Color>(builder: (ctx) => const ColorAddPage());
+    Color? color = await Navigator.of(context).push(route);
+    if (color != null) {
+      setState(() {
+        _colors.add(color);
+      });
+    }
+  }
+}