add

2026-10-15 20:36:59 +08:00
commit 6bf949949c
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+import 'package:flutter/material.dart';
+
+import '../../core/theme/app_theme.dart';
+import '../../screens/feed/feed_screen.dart';
+import '../../screens/profile/mine_screen.dart';
+
+/// 首页壳：底部 Tab（首页/分类/发布/消息/我的），02-技术文档信息架构
+/// 首页 Tab 为 Feed 播放页，我的页已接入，其余 Tab 随迭代接入；IndexedStack 保活各 Tab 状态
+class HomeShell extends StatefulWidget {
+  const HomeShell({super.key});
+
+  @override
+  State<HomeShell> createState() => _HomeShellState();
+}
+
+class _HomeShellState extends State<HomeShell> {
+  int _index = 0;
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: IndexedStack(
+        index: _index,
+        children: const [
+          FeedScreen(),
+          _TabPlaceholder('分类'),
+          _TabPlaceholder('发布'),
+          _TabPlaceholder('消息'),
+          MineScreen(),
+        ],
+      ),
+      bottomNavigationBar: NavigationBar(
+        backgroundColor: AppColors.surface,
+        indicatorColor: AppColors.primary.withValues(alpha: 0.2),
+        selectedIndex: _index,
+        onDestinationSelected: (i) => setState(() => _index = i),
+        destinations: const [
+          NavigationDestination(
+            icon: Icon(Icons.home_outlined),
+            selectedIcon: Icon(Icons.home, color: AppColors.primary),
+            label: '首页',
+          ),
+          NavigationDestination(
+            icon: Icon(Icons.grid_view_outlined),
+            label: '分类',
+          ),
+          NavigationDestination(
+            icon: Icon(Icons.add_box_outlined),
+            label: '发布',
+          ),
+          NavigationDestination(
+            icon: Icon(Icons.notifications_none),
+            label: '消息',
+          ),
+          NavigationDestination(
+            icon: Icon(Icons.person_outline),
+            label: '我的',
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+/// Tab 占位（迭代期）
+class _TabPlaceholder extends StatelessWidget {
+  const _TabPlaceholder(this.title);
+
+  final String title;
+
+  @override
+  Widget build(BuildContext context) {
+    return Center(
+      child: Text(
+        '$title（随迭代接入）',
+        style: const TextStyle(color: AppColors.textSecondary, fontSize: 15),
+      ),
+    );
+  }
+}