show done all button notiscreen when have data

lib/presentation/screens/notification/sc_notification.dart

           centerTitle: true,
           title: Text("Thông báo"),
           actions: <Widget>[
-            IconButton(
-                icon: Icon(Icons.done_all),
-                onPressed: () {
-                  BlocProvider.of<NotiBloc>(context)
-                      .add(MarkAllNotificationUpdate(status: "1"));
-                })
+            BlocBuilder<NotiBloc, NotiState>(
+              builder: (context, state) {
+                if (state is NotiSuccess) {
+                  if (state.items.length > 0) {
+                    return IconButton(
+                        icon: Icon(Icons.done_all),
+                        onPressed: () {
+                          BlocProvider.of<NotiBloc>(context)
+                              .add(MarkAllNotificationUpdate(status: "1"));
+                        });
+                  } else {
+                    return SizedBox();
+                  }
+                } else {
+                  return SizedBox();
+                }
+              },
+            )
           ],
         ),
         body: InfinityView());