Make ContactList a StatefulWidget

This is required to change the contact states during runtime.

1 files changed, 7 insertions, 1 deletions

diff --git a/lib/main.dart b/lib/main.dart
index 34eab88..db8fcd2 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -22,9 +22,15 @@ class Contact {
   const Contact({required this.address, required this.isOpen});
 }
 
-class ContactList extends StatelessWidget {
+class ContactList extends StatefulWidget {
   const ContactList({super.key});
 
+  @override
+  State<ContactList> createState() => _ContactListState();
+}
+
+class _ContactListState extends State<ContactList> {
+
   final List<Contact> contacts = const <Contact>[
     Contact(address: "Living Room Window", isOpen: false),
     Contact(address: "Front Door", isOpen: true),