start functions test

covas_mobile/lib/main.dart

@@ -120,6 +120,17 @@ class _LoginDemoState extends State<LoginDemo> with ShowErrorDialog {
     }
   }
 
+  void start() async {
+    SharedPreferences prefs = await SharedPreferences.getInstance();
+    stderr.writeln(prefs.getString("jwt"));
+  }
+
+  @override
+  void initState() {
+    start();
+    super.initState();
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(