Allow emojis in textformfield in flutter

class EmojiTextField extends StatefulWidget { 
  final TextEditingController _controller = TextEditingController();
  String? _validateInput(String input) {
    final RegExp regex = RegExp(
      r'^[u0020-u007Eu00A0-u00FFu0100-u017Fu0180-u024Fu0250-u02AFu0300-u03FF]*$',
      );
if (!regex.hasMatch(input)) {
  return 'Please enter only text and emojis';
}
return null;
}

Widget build(BuildContext context) {
return Padding(
child: TextField(
      controller: _controller,
      decoration: InputDecoration(
        hintText: 'Enter text or emojis',
        errorText: _validateInput(_controller.text),
      ),
    ),
 );
}