fix fadeInImage case

Author: CarGuo

lib/page/user/widget/user_header.dart

@@ -118,15 +118,20 @@ class UserHeaderItem extends StatelessWidget {
         padding: const EdgeInsets.all(0.0),
         constraints: const BoxConstraints(minWidth: 0.0, minHeight: 0.0),
         child: ClipOval(
-          child: FadeInImage.assetNetwork(
-            placeholder: GSYICons.DEFAULT_USER_ICON,
-            //预览图
-            fit: BoxFit.fitWidth,
-            image: userInfo.avatar_url ?? GSYICons.DEFAULT_REMOTE_PIC,
-            width: 80.0,
-            height: 80.0,
-          ),
-        ));
+            child: FadeInImage.assetNetwork(
+          placeholder: GSYICons.DEFAULT_USER_ICON,
+          key: (userInfo.avatar_url != null && userInfo.avatar_url!.isNotEmpty)
+              ? ValueKey(userInfo.avatar_url)
+              : null,
+          //预览图
+          fit: BoxFit.fitWidth,
+          image: (userInfo.avatar_url != null &&
+                  userInfo.avatar_url!.isNotEmpty)
+              ? userInfo.avatar_url!
+              : "https://github.com/CarGuo/gsy_github_app_flutter/blob/master/logo.png?raw=true",
+          width: 80.0,
+          height: 80.0,
+        )));
   }
 
   _renderUserInfo(BuildContext context) {

lib/page/user/widget/user_item.dart

@@ -17,19 +17,28 @@ class UserItem extends StatelessWidget {
 
   final bool needImage;
 
-  const UserItem(this.userItemViewModel, {super.key, this.onPressed, this.needImage = true});
+  const UserItem(this.userItemViewModel,
+      {super.key, this.onPressed, this.needImage = true});
 
   @override
   Widget build(BuildContext context) {
     var me = StoreProvider.of<GSYState>(context).state.userInfo!;
     Widget userImage = IconButton(
-        padding: const EdgeInsets.only(top: 0.0, left: 0.0, bottom: 0.0, right: 10.0),
+        padding: const EdgeInsets.only(
+            top: 0.0, left: 0.0, bottom: 0.0, right: 10.0),
         icon: ClipOval(
           child: FadeInImage.assetNetwork(
             placeholder: GSYICons.DEFAULT_USER_ICON,
+            key: (userItemViewModel.userPic != null &&
+                    userItemViewModel.userPic!.isNotEmpty)
+                ? ValueKey(userItemViewModel.userPic)
+                : null,
             //预览图
             fit: BoxFit.fitWidth,
-            image: userItemViewModel.userPic ?? "https://github.com/CarGuo/gsy_github_app_flutter/blob/master/logo.png?raw=true",
+            image: (userItemViewModel.userPic != null &&
+                    userItemViewModel.userPic!.isNotEmpty)
+                ? userItemViewModel.userPic!
+                : "https://github.com/CarGuo/gsy_github_app_flutter/blob/master/logo.png?raw=true",
             width: 40.0,
             height: 40.0,
           ),