界面整合v2

lib/guess/guess_page.dart

@@ -12,7 +12,7 @@ class GuessPage extends StatefulWidget {
   State<GuessPage> createState() => _GuessPageState();
 }
 
-class _GuessPageState extends State<GuessPage> with SingleTickerProviderStateMixin{
+class _GuessPageState extends State<GuessPage> with SingleTickerProviderStateMixin,AutomaticKeepAliveClientMixin{
 
   late AnimationController controller;
 
@@ -114,4 +114,7 @@ class _GuessPageState extends State<GuessPage> with SingleTickerProviderStateMix
       ),
     );
   }
+
+  @override
+  bool get wantKeepAlive => true;
 }

lib/muyu/muyu_page.dart

@@ -23,7 +23,7 @@ class MuyuPage extends StatefulWidget {
   State<MuyuPage> createState() => _MuyuPageState();
 }
 
-class _MuyuPageState extends State<MuyuPage> {
+class _MuyuPageState extends State<MuyuPage> with AutomaticKeepAliveClientMixin {
   int _counter = 0;
   MeritRecord? _cruRecord;
 
@@ -174,4 +174,7 @@ class _MuyuPageState extends State<MuyuPage> {
       maxPlayers: 1,
     );
   }
+
+  @override
+  bool get wantKeepAlive => true;
 }

lib/navigation/app_navigation.dart

@@ -14,6 +14,7 @@ class AppNavigation extends StatefulWidget {
 
 class _AppNavigationState extends State<AppNavigation> {
   int _index = 0;
+  final PageController _ctrl = PageController();
 
   final List<MenuData> menus = const [
     MenuData(label: '猜数字', icon: Icons.question_mark),
@@ -26,7 +27,7 @@ class _AppNavigationState extends State<AppNavigation> {
     return Column(
       children: [
         Expanded(
-          child: _buildContent(_index),
+          child: _buildContent(),
         ),
         AppBottomBar(
           currentIndex: _index,
@@ -38,22 +39,22 @@ class _AppNavigationState extends State<AppNavigation> {
   }
 
   void _onChangePage(int index) {
+    _ctrl.jumpToPage(index);
     setState(() {
       _index = index;
     });
   }
 
-  Widget _buildContent(int index) {
-    switch(index){
-      case 0:
-       return const GuessPage();
-      case 1:
-        return const MuyuPage();
-      case 2:
-        return const Paper();
-      default:
-        return const SizedBox.shrink();
-    }
+  Widget _buildContent() {
+    return PageView(
+      physics: const NeverScrollableScrollPhysics(),
+      controller: _ctrl,
+      children: const [
+         GuessPage(),
+         MuyuPage(),
+         Paper(),
+      ],
+    );
   }
 }
 

lib/paper/paper.dart

@@ -16,7 +16,12 @@ class Paper extends StatefulWidget {
   State<Paper> createState() => _PaperState();
 }
 
-class _PaperState extends State<Paper> {
+class _PaperState extends State<Paper>  with AutomaticKeepAliveClientMixin {
+
+  @override
+  bool get wantKeepAlive => true;
+
+
   List<Line> _lines = []; // 线列表
 
   int _activeColorIndex = 0; // 颜色激活索引