home_test.dart

class HomePage extends StatefulWidget {
  static String routeName = '/';

  @override
  State<HomePage> createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  final formKey = GlobalKey<FormState>();
  TextEditingController _titleController = TextEditingController();
  TextEditingController _descController = TextEditingController();
  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: const Text('Flutter Tests'),
          actions: [
            IconButton(
                onPressed: () {
                  Navigator.pushNamed(context, FavoritesPage.routeName);
                },
                icon: Icon(Icons.favorite_border_outlined))
          ],
        ),
        body: Padding(
          padding: const EdgeInsets.all(8.0),
          child: Form(
            //assign the globalkey to the key value of the form widget
            key: formKey,
            child: ListView(
              children: [
                TextFormField(
                  controller: _titleController,
                  decoration: InputDecoration(hintText: 'Title'),
                  validator: ((value) {
                    if (value == null || value.isEmpty) {
                      return 'Please Enter a Title';
                    }
                    return null;
                  }),
                ),
                TextFormField(
                  controller: _descController,
                  decoration: InputDecoration(hintText: 'Description'),
                  validator: ((value) {
                    if (value == null || value.isEmpty) {
                      return 'Please Enter a Description';
                    }
                    return null;
                  }),
                ),
                TextButton(
                    onPressed: () {
                      //access the Form widgets variables and functions
                      //in this case we use the validate() method
                      if (!formKey.currentState!.validate()) {
                        print('error in the form');
                        return;
                      }
                      if (_titleController.text.trim().isEmpty ||
                          _descController.text.trim().isEmpty) {
                        ScaffoldMessenger.of(context).showSnackBar(
                          SnackBar(
                            content: Text('Please Fill All Details'),
                            duration: const Duration(seconds: 1),
                          ),
                        );
                        return;
                      }
                      Provider.of<Favorites>(context, listen: false).add(Note(
                          description: _descController.text,
                          title: _titleController.text));
                      ScaffoldMessenger.of(context).showSnackBar(SnackBar(
                        content: Text('Note Added'),
                        duration: const Duration(seconds: 1),
                      ));
                      _titleController.clear();
                      _descController.clear();
                    },
                    child: const Text('Add Note'))
              ],
            ),
          ),
        ));
  }
}