lib/screens/activity_list_screen.dart

@@ -78,11 +78,9 @@ class _ActivityListScreenState extends State<ActivityListScreen> {
 
   @override
   Widget build(BuildContext context) {
-    return Container(
+    return Scaffold(
-      color: const Color(0xFFFFF8F0),
+      backgroundColor: const Color(0xFFFFF8F0),
-      child: Column(
+      appBar: AppBar(
-        children: [
-          AppBar(
         title: Text('伴享', style: TextStyle(fontWeight: FontWeight.bold)),
         centerTitle: true,
         actions: [
@@ -96,9 +94,7 @@ class _ActivityListScreenState extends State<ActivityListScreen> {
           ),
         ],
       ),
-          Expanded(child: _buildFeed()),
+      body: _buildFeed(),
-        ],
-      ),
     );
   }
 

lib/screens/main_screen.dart

@@ -32,11 +32,8 @@ class _MainScreenState extends State<MainScreen> {
       floatingActionButton: _buildGlobalFab(),
       floatingActionButtonLocation: FloatingActionButtonLocation.centerDocked,
       bottomNavigationBar: BottomNavigationBar(
-        type: BottomNavigationBarType.fixed,
         currentIndex: _currentIndex,
         onTap: (i) => setState(() => _currentIndex = i),
-        selectedItemColor: const Color(0xFFFF6B35),
-        unselectedItemColor: const Color(0xFF999999),
         items: const [
           BottomNavigationBarItem(icon: Icon(Icons.home_outlined), activeIcon: Icon(Icons.home), label: '首页'),
           BottomNavigationBarItem(icon: Icon(Icons.people_outline), activeIcon: Icon(Icons.people), label: '好友'),