How to capitialize first letter of TextFormField in flutter-CodePudding

I'm trying to capitialize the first letter of Textformfield, for this i'm using the

textCapitalization: TextCapitalization.words,

but it's not working for Textformfield, and works for textfield

please help how to do this.

CodePudding user response：

You can try with formatter for upper case, in TextFormField you just use UpperCaseTextFormatter class in input formatters section

TextFormField(
            controller: _textEditingController,
            inputFormatters: <TextInputFormatter>[
              UpperCaseTextFormatter()
            ],
          )

Upper text formatter

class UpperCaseTextFormatter extends TextInputFormatter {
  @override
  TextEditingValue formatEditUpdate(TextEditingValue oldValue, TextEditingValue newValue) {
    return TextEditingValue(
      text: capitalize(newValue.text),
      selection: newValue.selection,
    );
  }
}
String capitalize(String value) {
  if(value.trim().isEmpty) return "";
  return "${value[0].toUpperCase()}${value.substring(1).toLowerCase()}";
}

output:

CodePudding user response：

TextFormField(
       textCapitalization: TextCapitalization.words,
       ),

This capitalize first letter of each word we type in a TextFormField.

After setting textCapitalization, try rebuilding on your emulator or device instance and check again. Let me know it works then,

CodePudding user response：

Try below code hope its helpful to you. refer TextCapitalization