Digit only TextFormField in Flutter

Yep, you can use the inputFormatters attribute and add the WhitelistingTextInputFormatter.digitsOnly expression

  import 'package:flutter/services.dart';


  TextFormField(
          ...
          inputFormatters: [WhitelistingTextInputFormatter.digitsOnly],
        )

You can find more info here: https://docs.flutter.io/flutter/services/TextInputFormatter-class.html

After flutter 1.12, WhitelistingTextInputFormatter was deprecated and you are running a newer version, use :

FilteringTextInputFormatter.digitsOnly

https://api.flutter.dev/flutter/services/FilteringTextInputFormatter-class.html