in Flutter/Dart how can I disable all alphabetic characters while typing in a TextFormField ? I want only Numbers to be shown when the user type inside the field. Thank you. Example : when user type : Test2094 , the only shown text is 2094. but it's not only about showing text but the stored information should be only numbers.

CodePudding user response：

you should try with keyboard type number only and user can able to input digits only and import import 'package:flutter/services.dart';

          TextFormField(
                      keyboardType: TextInputType.numberWithOptions(
                        signed: false,
                        decimal: false,
                      ),
                      inputFormatters: <TextInputFormatter>[
                        FilteringTextInputFormatter.digitsOnly,
                      ],
                      
                      decoration: InputDecoration(
                        border: OutlineInputBorder(),
                        labelText: "Number*",
                      ),
                    )