format flutter textfield with currency format

mathiasgodwin answered on October 29, 2022 Popularity 8/10 Helpfulness 3/10

answer format flutter textfield with currency format

format flutter textfield with currency format

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class NumericTextFormatter extends TextInputFormatter {
  @override
  TextEditingValue formatEditUpdate(
      TextEditingValue oldValue, TextEditingValue newValue) {
    if (newValue.text.isEmpty) {
      return newValue.copyWith(text: '');
    } else if (newValue.text.compareTo(oldValue.text) != 0) {
      final int selectionIndexFromTheRight =
          newValue.text.length - newValue.selection.end;
      var value = newValue.text;
      if (newValue.text.length > 2) {
        value = value.replaceAll(RegExp(r'\D'), '');
        value = value.replaceAll(RegExp(r'\B(?=(\d{3})+(?!\d))'), ',');
      }
      return TextEditingValue(
        text: value,
        selection: TextSelection.collapsed(
            offset: value.length - selectionIndexFromTheRight),
      );
    } else {
      return newValue;
    }
  }
}

Popularity 8/10 Helpfulness 3/10 Language dart

Source: stackoverflow.com

Tags: currency dart format

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Contributed on Oct 29 2022

mathiasgodwin

0 Answers Avg Quality 2/10

format flutter textfield with currency format

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