final

lib/widgets/mobile/mobile_my_cards.dart

@@ -13,8 +13,7 @@ import '../../utils/http_util.dart';
 import '../../utils/utils.dart';
 
 class MobileMyCards extends StatefulWidget {
-  final Key key;
-  const MobileMyCards({this.key});
+  const MobileMyCards({Key? key});
 
   @override
   State<StatefulWidget> createState() {
@@ -24,9 +23,9 @@ class MobileMyCards extends StatefulWidget {
 }
 
 class MyCardsState extends State<MobileMyCards> {
-  User _user;
+  User? _user;
 
-  bool isSubmitting;
+  bool isSubmitting = false;
 
   @override
   Widget build(BuildContext context) {
@@ -44,9 +43,9 @@ class MyCardsState extends State<MobileMyCards> {
         backgroundColor: Theme.of(context).primaryColor,
       ),
       body: ListView.builder(
-        itemCount: _user.stripePaymentMethods.length,
+        itemCount: _user!.stripePaymentMethods.length,
         itemBuilder: (BuildContext context, int position) {
-          StripePaymentMethod paymentMethod = _user.stripePaymentMethods[position];
+          StripePaymentMethod paymentMethod = _user!.stripePaymentMethods[position];
           return cardWidget(paymentMethod);
         }
       ),
@@ -116,7 +115,7 @@ class MyCardsState extends State<MobileMyCards> {
                       TextButton(
                         child: Text(S.of(context).cancel),
                         style: TextButton.styleFrom(
-                          primary: Theme.of(context).primaryColor,
+                          foregroundColor: Theme.of(context).primaryColor,
                         ),
                         onPressed: () {
                           Navigator.of(context).pop();