1

lib/main.dart

@@ -1,5 +1,5 @@
 import 'package:flutter/material.dart';
-import 'package:timemanage/screen/dashboard_screen.dart';
+import 'package:timemanage/screens/dashboard_screen.dart';
 
 void main() => runApp(const MyApp());
 
@@ -26,3 +26,178 @@ class MyApp extends StatelessWidget {
     );
   }
 }
+
+class DashBoardScreen extends StatelessWidget {
+  const DashBoardScreen({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        backgroundColor: Colors.blueAccent, // 背景色
+        // 最前面的菜单按钮
+        leading: MenuBar(
+          children: <Widget>[
+            SubmenuButton(
+              menuChildren: <Widget>[
+                MenuItemButton(
+                  onPressed: () {
+                    Navigator.push(
+                      context,
+                      MaterialPageRoute(
+                          builder: (context) => const CourseScreen()),
+                    );
+                  },
+                  child: const Text('课程表'),
+                ),
+                MenuItemButton(
+                  onPressed: () {
+                    Navigator.push(
+                      context,
+                      MaterialPageRoute(
+                          builder: (context) => const ProjectsScreen()),
+                    );
+                  },
+                  child: const Text('项目'),
+                ),
+                MenuItemButton(
+                  onPressed: () {
+                    Navigator.push(
+                      context,
+                      MaterialPageRoute(
+                          builder: (context) => const ReportsScreen()),
+                    );
+                  },
+                  child: const Text('统计报告'),
+                ),
+                MenuItemButton(
+                  onPressed: () {
+                    Navigator.push(
+                      context,
+                      MaterialPageRoute(
+                          builder: (context) => const ExportScreen()),
+                    );
+                  },
+                  child: const Text('导入和导出'),
+                ),
+                MenuItemButton(
+                  onPressed: () {
+                    Navigator.push(
+                      context,
+                      MaterialPageRoute(
+                          builder: (context) => const SettingsScreen()),
+                    );
+                  },
+                  child: const Text('设置'),
+                ),
+                MenuItemButton(
+                  onPressed: () {
+                    Navigator.push(
+                      context,
+                      MaterialPageRoute(
+                          builder: (context) => const AboutScreen()),
+                    );
+                  },
+                  child: const Text('关于'),
+                ),
+              ],
+              child: const Icon(Icons.menu),
+            ),
+          ],
+        ),
+        // 标题
+        title: const Text('时间管理'),
+        actions: [
+          // 搜索按钮
+          IconButton(
+            icon: const Icon(Icons.search),
+            onPressed: () {},
+          ),
+          // 筛选按钮
+          IconButton(
+            icon: const Icon(Icons.filter_alt),
+            onPressed: () {},
+          )
+        ],
+      ),
+      body: const Center(
+        child: Text('主界面'),
+      ),
+    );
+  }
+}
+
+class CourseScreen extends StatelessWidget {
+  const CourseScreen({super.key});
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('课程表'),
+      ),
+      body: const Center(
+        child: Text('课程表界面'),
+      ),
+    );
+  }
+}
+
+class ProjectsScreen extends StatelessWidget {
+  const ProjectsScreen({super.key});
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('项目'),
+      ),
+      body: const Center(
+        child: Text('项目界面'),
+      ),
+    );
+  }
+}
+
+class ReportsScreen extends StatelessWidget {
+  const ReportsScreen({super.key});
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('统计报告'),
+      ),
+      body: const Center(
+        child: Text('统计报告界面'),
+      ),
+    );
+  }
+}
+
+class ExportScreen extends StatelessWidget {
+  const ExportScreen({super.key});
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('导入与导出'),
+      ),
+      body: const Center(
+        child: Text('导入与导出界面'),
+      ),
+    );
+  }
+}
+
+class SettingsScreen extends StatelessWidget {
+  const SettingsScreen({super.key});
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('设置'),
+      ),
+      body: const Center(
+        child: Text('设置界面'),
+      ),
+    );
+  }
+}

lib/screen/course_screen.dart

@@ -9,7 +9,7 @@ class CourseScreen extends StatelessWidget {
         title: const Text('课程表'),
       ),
       body: const Center(
-        child: Text('课程表界面'),
+        child: Text('课程课程表'),
       ),
     );
   }