Contact - non-nullable attributes

Author: Pedro Girardi

lib/model.dart

@@ -140,8 +140,8 @@ class ExchangeParams {
 
 @immutable
 class Contact {
-  final String? name;
-  final Address? address;
+  final String name;
+  final Address address;
 
   Contact({
     required this.name,

lib/screen/account.dart

@@ -227,8 +227,8 @@ class _AccountScreenBodyState extends State<AccountScreenBody> {
       print('Alias $alias');
 
       final _newContact = Contact(
-        name: alias,
-        address: address,
+        name: alias!,
+        address: address!,
       );
 
       _appState.addContact(_newContact, isPersistent: true);

lib/screen/new_contact.dart

@@ -95,8 +95,8 @@ class _NewContactScreenBodyState extends State<NewContactScreenBody> {
                 if (_formKey.currentState!.validate()) {
                   context.read<AppState>().addContact(
                         Contact(
-                          name: _name,
-                          address: _address,
+                          name: _name!,
+                          address: _address!,
                         ),
                         isPersistent: true,
                       );