first commit

2026-09-21 17:37:53 +08:00
commit 67d4dd5b7c
141 changed files with 8558 additions and 0 deletions
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+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../providers/auth_provider.dart';
+import '../add/add_page.dart';
+import '../home/home_page.dart';
+import '../login/login_page.dart';
+import '../mine/mine_page.dart';
+import '../statistics/statistics_page.dart';
+
+class MainShell extends ConsumerStatefulWidget {
+  const MainShell({super.key});
+
+  @override
+  ConsumerState<MainShell> createState() => _MainShellState();
+}
+
+class _MainShellState extends ConsumerState<MainShell> {
+  int _index = 0; // 默认选中「首页」
+
+  @override
+  void initState() {
+    super.initState();
+    // 兜底：未登录直接回登录页
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      if (!ref.read(authProvider).isLoggedIn) {
+        _goLogin();
+      }
+    });
+  }
+
+  void _goLogin() {
+    Navigator.of(context).pushAndRemoveUntil(
+      MaterialPageRoute(builder: (_) => const LoginPage()),
+      (route) => false,
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    // IndexedStack 保证四个页面常驻：写操作后首页/统计的数据失效能立即重取，
+    // 用户切回时看到的就是最新数据。
+    const pages = [
+      HomePage(),
+      AddPage(),
+      StatisticsPage(),
+      MinePage(),
+    ];
+    return Scaffold(
+      body: IndexedStack(index: _index, children: pages),
+      bottomNavigationBar: NavigationBar(
+        selectedIndex: _index,
+        onDestinationSelected: (i) => setState(() => _index = i),
+        backgroundColor: Colors.white,
+        indicatorColor: const Color(0x33C8956E),
+        destinations: const [
+          NavigationDestination(icon: Icon(Icons.home_outlined), selectedIcon: Icon(Icons.home), label: '首页'),
+          NavigationDestination(icon: Icon(Icons.add_circle_outline), selectedIcon: Icon(Icons.add_circle), label: '记账'),
+          NavigationDestination(icon: Icon(Icons.bar_chart_outlined), selectedIcon: Icon(Icons.bar_chart), label: '统计'),
+          NavigationDestination(icon: Icon(Icons.person_outline), selectedIcon: Icon(Icons.person), label: '我的'),
+        ],
+      ),
+    );
+  }
+}