WebJun 25, 2024 · Flutter provides an abstract class, ... the behavior of a TextField or a TextFormField by passing a list of implementation classes of TextInputFormatter to the inputFormatters argument. ... we can format a text field where the user can type in a phone number and the rules for a valid phone number is. Only digits are allowed.
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WebMay 21, 2024 · In your TextField, just set the following code: keyboardType: TextInputType.numberWithOptions (decimal: true), inputFormatters: [BlacklistingTextInputFormatter (new RegExp (' [ -]'))], The simbols hyphen and space will still appear in the keyboard, but will become blocked. Share. WebJan 3, 2024 · If you want to restrict user entering 2 spaces,instead of adding validation you can add inputFormatters:[FilteringTextInputFormatter.deny(RegExp(r"\s\s"),),], – Tejaswini Dev Jan 3, 2024 at 12:01 pop and hop
flutter - How can I format a local mobile phone number to a ...
WebMar 4, 2024 · Longer answer. Instead of defining your own numberInputFormatters, you should use FilteringTextInputFormatter.digitsOnly. Also, your _tip is not a String, you could store its value as an int instead. The, your onChanged callback becomes: onChanged: (val) => setState ( () => _tip = int.tryParse (val) ?? 0), WebJan 21, 2024 · I want to print the phone number written in the text form field like this; xxxx-xxx-xxxx but I want to do this without using any packages. ... ( keyboardType: TextInputType.number, maxLength: 13, inputFormatters:[ FilteringTextInputFormatter.digitsOnly, _mobileFormatter, ], decoration: InputDecoration( … WebFeb 11, 2024 · For phone number validation, the user is expected to input 11 digits starting with the digit zero. Finally, for our password validation, we expect the user to use a combination of an uppercase letter, a lowercase letter, a digit, and special character. ... inputFormatters in Flutter take a TextInputFormatter, which has a RegExp associated … sharepoint can share file but not folder