1、修改 StateLayout

lib/widget/state_layout.dart

 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 
-import '../utils/image_utils.dart';
-
 class StateLayout extends StatefulWidget {
   const StateLayout({Key? key, required this.type, this.hintText})
       : super(key: key);
 
   final StateType type;
   final String? hintText;
+
   @override
   State<StateLayout> createState() => _StateLayoutState();
 }
@@ -16,14 +15,7 @@ class StateLayout extends StatefulWidget {
 class _StateLayoutState extends State<StateLayout> {
   @override
   Widget build(BuildContext context) {
-    return SingleChildScrollView(
-      child: SizedBox(
-        height: MediaQuery.of(context).size.height - 30.0,
-        child: widget.type == StateType.loading
-            ? _loadingWidget()
-            : _otherWidget(),
-      ),
-    );
+    return widget.type == StateType.loading ? _loadingWidget() : _otherWidget();
   }
 
   Widget _loadingWidget() {
@@ -32,13 +24,6 @@ class _StateLayoutState extends State<StateLayout> {
       mainAxisAlignment: MainAxisAlignment.center,
       children: const [
         CupertinoActivityIndicator(radius: 16.0),
-        SizedBox(
-          width: double.infinity,
-          height: 16.0,
-        ),
-        SizedBox(
-          height: 50,
-        ),
       ],
     );
   }
@@ -63,28 +48,24 @@ class _StateLayoutState extends State<StateLayout> {
       crossAxisAlignment: CrossAxisAlignment.center,
       mainAxisAlignment: MainAxisAlignment.center,
       children: <Widget>[
-        Opacity(
-            opacity: 1,
-            child: Container(
-              height: 120.0,
-              width: 120.0,
-              decoration: BoxDecoration(
-                image: DecorationImage(
-                  image: ImageUtils.getAssetImage(img),
-                ),
-              ),
-            )),
+        // Opacity(
+        //     opacity: 1,
+        //     child: Container(
+        //       height: 120.0,
+        //       width: 120.0,
+        //       decoration: BoxDecoration(
+        //         image: DecorationImage(
+        //           image: ImageUtils.getAssetImage(img),
+        //         ),
+        //       ),
+        //     )),
         const SizedBox(
-          width: double.infinity,
           height: 16.0,
         ),
         Text(
           hintText,
           style: const TextStyle(fontSize: 14, color: Colors.grey),
         ),
-        const SizedBox(
-          height: 50,
-        ),
       ],
     );
   }