final

lib/widgets/mobile/mobile_blog.dart

@@ -18,7 +18,7 @@ import '../../widgets/mobile/MobileBottomNav.dart';
 
 class MobileBlog extends StatefulWidget {
   final int businessId;
-  const MobileBlog({Key key, this.businessId}) : super(key: key);
+  const MobileBlog({Key? key, required this.businessId}) : super(key: key);
 
   @override
   State<StatefulWidget> createState() {
@@ -28,7 +28,7 @@ class MobileBlog extends StatefulWidget {
 }
 
 class MobileBlogState extends State<MobileBlog> {
-  List<Blog> blogs;
+  List<Blog>? blogs;
 
   int _page = 1;
   int _pageCount = 1;
@@ -41,7 +41,7 @@ class MobileBlogState extends State<MobileBlog> {
   void _onRefresh() {
     _page = 1;
     if (blogs != null) {
-      blogs.clear();
+      blogs?.clear();
     } else {
       blogs = [];
     }
@@ -82,7 +82,7 @@ class MobileBlogState extends State<MobileBlog> {
         enablePullUp: true,
         header: WaterDropHeader(),
         footer: CustomFooter(
-          builder: (BuildContext context, LoadStatus mode){
+          builder: (BuildContext context, LoadStatus? mode){
             Widget footer;
             if(mode == LoadStatus.idle) {
               footer = Text(S.of(context).pull_up_to_load_more);
@@ -123,9 +123,9 @@ class MobileBlogState extends State<MobileBlog> {
       return SizedBox.shrink();
     }
     return ListView.builder(
-        itemCount: blogs.length <= 1 ? 1 : blogs.length,
+        itemCount: blogs!.length <= 1 ? 1 : blogs!.length,
         itemBuilder: (BuildContext context, int i) {
-          if (blogs.length <= 0) {
+          if (blogs!.length <= 0) {
             return Container(
               padding: EdgeInsets.all(16.0),
               child: Center(
@@ -133,7 +133,7 @@ class MobileBlogState extends State<MobileBlog> {
               ),
             );
           } else {
-            Blog blog = blogs[i];
+            Blog blog = blogs![i];
 
             Widget w = Container(
               padding: EdgeInsets.symmetric(vertical: 20.0, horizontal: 16.0),
@@ -243,7 +243,7 @@ class MobileBlogState extends State<MobileBlog> {
           if (blogs == null) {
             blogs = [];
           }
-          blogs.addAll((value['blogs'] as List).map((e) => Blog.fromJson(e)).toList());
+          blogs!.addAll((value['blogs'] as List).map((e) => Blog.fromJson(e)).toList());
         });
       }
     }).catchError((error) {