不知掉提交的what

@@ -47,7 +47,8 @@ class HomeEnterPage extends StatefulWidget {
   _HomeEnterPageState createState() => _HomeEnterPageState();
   _HomeEnterPageState createState() => _HomeEnterPageState();
 }
 }
 
 
-class _HomeEnterPageState extends State<HomeEnterPage> {
+class _HomeEnterPageState extends State<HomeEnterPage>
+    with AutomaticKeepAliveClientMixin {
   DateTime dateTimeNow; //当前日期
   DateTime dateTimeNow; //当前日期
   HomeEnterModel _homeEnterModel;
   HomeEnterModel _homeEnterModel;
   FocusNode _phoneNode = FocusNode();
   FocusNode _phoneNode = FocusNode();
@@ -1428,6 +1429,10 @@ class _HomeEnterPageState extends State<HomeEnterPage> {
           ]),
           ]),
         ));
         ));
   }
   }
+
+  @override
+  // TODO: implement wantKeepAlive
+  bool get wantKeepAlive => true;
 }
 }
 
 
 class CustomButton extends StatefulWidget {
 class CustomButton extends StatefulWidget {