xx function

dynamic xx()

Implementation

xx() {
  TextField();

  TextFormField();

  FormState();

  final GlobalKey<FormState> _formKey = GlobalKey<FormState>();

  Form(
    key: _formKey,
    child: Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: <Widget>[
        TextFormField(
          decoration: const InputDecoration(
            hintText: 'Enter your email',
          ),
          validator: (String? value) {
            if (value == null || value.isEmpty) {
              return 'Please enter some text';
            }
            return null;
          },
        ),
        Padding(
          padding: const EdgeInsets.symmetric(vertical: 16.0),
          child: ElevatedButton(
            onPressed: () {
              // Validate will return true if the form is valid, or false if
              // the form is invalid.
              if (_formKey.currentState!.validate()) {
                // Process data.
              }
            },
            child: const Text('Submit'),
          ),
        ),
      ],
    ),
  );
}