This post is just my quick note on how to limit the soft keyboard to allow only digits.

Please note that on iOS, we just need to use keyboardType: TextInputType.number

However on Android, we need to set inputFormatters. The keyboard on Android still shows the dot ( . ) and hyphen ( – ), but we can not add them to the text field.

TextField(
  inputFormatters: [
    FilteringTextInputFormatter.digitsOnly,
  ],
  keyboardType: TextInputType.number,
),

Phuc Tran

Creator of Coflutter.

Founder & CTO at Bumbii Technology

Founder at Bumbii K12

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