home added

lib/shopping_list_detail_screen.dart

@@ -33,6 +33,13 @@ class _ShoppingListDetailScreenState extends State<ShoppingListDetailScreen> {
   void initState() {
     super.initState();
     _future = _load();
+    widget.repository.addListener(_reload);
+  }
+
+  @override
+  void dispose() {
+    widget.repository.removeListener(_reload);
+    super.dispose();
   }
 
   Future<({ShoppingList list, List<ShoppingListItem> items})> _load() async {
@@ -45,6 +52,7 @@ class _ShoppingListDetailScreenState extends State<ShoppingListDetailScreen> {
   }
 
   void _reload() {
+    if (!mounted) return;
     setState(() => _future = _load());
   }