1、修改MyScaffold控件(body的MyScrollView增加controller属性);

lib/widget/my_scaffold.dart

@@ -15,6 +15,7 @@ class MyScaffold extends StatelessWidget {
   final CrossAxisAlignment crossAxisAlignment;
   final KeyboardActionsConfig? keyboardConfig;
   final Widget? floatingActionButton;
+  final ScrollController? controller;
 
   const MyScaffold({
     Key? key,
@@ -28,6 +29,7 @@ class MyScaffold extends StatelessWidget {
     this.crossAxisAlignment = CrossAxisAlignment.start,
     this.keyboardConfig,
     this.floatingActionButton,
+    this.controller,
   }) : super(key: key);
 
   @override
@@ -42,6 +44,7 @@ class MyScaffold extends StatelessWidget {
               bottomButton: bottomButton,
               crossAxisAlignment: crossAxisAlignment,
               keyboardConfig: keyboardConfig,
+              controller: controller,
               children: children ?? [],
             ),
       ),