路由生命周期状态

lib/11/color_page.dart

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+import 'package:flutter/material.dart';
+import '../common/components/colors_panel.dart';
+import 'color_detail.dart';
+import 'transition.dart';
+
+class ColorPage extends StatefulWidget {
+  const ColorPage({super.key});
+
+  @override
+  State<ColorPage> createState() => _ColorPageState();
+}
+
+class _ColorPageState extends State<ColorPage> {
+  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 = PageRouteBuilder<void>(
+      barrierColor: Colors.white,
+      pageBuilder: (_, __, ___) => ColorDetailPage(color:color),
+      transitionsBuilder: kSlideBottomToTopWithSecondary,
+    );
+    Navigator.push(context, route);
+    // Navigator.push(
+    //     context,
+    //     MaterialPageRoute(builder: (_)=>ColorDetailPage(color:color)));
+  }
+
+  void _toAddPage() {
+  }
+}