My Home Page

my_home.dart

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  final formKey = GlobalKey<FormState>();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(widget.title),
      ),
      body: Padding(
        padding: const EdgeInsets.all(8.0),
        child: Center(
          child: Form(
            key: formKey,
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: <Widget>[
                ImagePickerField(),
                const SizedBox(height: 20),
                ElevatedButton(
                  onPressed: () {
                    final isValid = formKey.currentState!.validate();
                    if (isValid) {
                      ScaffoldMessenger.of(context).showSnackBar(
                        const SnackBar(
                          backgroundColor: Colors.green,
                          content: Text(
                            'Form is valid',
                            style: TextStyle(color: Colors.white),
                          ),
                        ),
                      );
                    }
                  },
                  child: const Text('Validate Form'),
                )
              ],
            ),
          ),
        ),
      ),
    );
  }
}