How to accept only numbers in TextFormFields?

May 30, 2022

I want to accept only numbers in textformfields. I have designed textformfield for accepting phone number. I have change keyboard type.

keyboardType: TextInputType.phone,

But, It can also accept special symbols or can paste other inputs also.
Keyboard screenshots

>Solution :

Try below code, refer FilteringTextInputFormatter

import below library

import 'package:flutter/services.dart';

Your Widget:

    TextFormField(
    keyboardType: TextInputType.number,
    inputFormatters: [FilteringTextInputFormatter.digitsOnly],
    //you can used below formater also
    /*  inputFormatters: [
          FilteringTextInputFormatter.allow(
            RegExp("[0-9]"),
          ),
        ],*/
  ),