CODEWITHSUNDEEP
flutterdarttextfield
saeid
saeid

Reputation: 53

How to capitalize the TextField value first letter of the first word after full stop "."?

Is such a thing possible?

example: "My favourite film is the matrix. And i think... "

similar questions have been asked before but they are forsimple capital the first letter of first word and not more

this codes just worked for first letter of first word and cant understand "."

extension CapExtension on String {
  String get inCaps =>
      this.length > 0 ? '${this[0].toUpperCase()}${this.substring(1)}' : '';

  String get capitalizeFirstofEach => this
      .replaceAll(RegExp(' +'), ' ')
      .split(" ")
      .map((str) => str.inCaps)
      .join(" ");
}


class CapitalCaseTextFormatter extends TextInputFormatter {
  @override
  TextEditingValue formatEditUpdate(
      TextEditingValue oldValue, TextEditingValue newValue) {
    return TextEditingValue(
      text: newValue.text.inCaps,
      selection: newValue.selection,
    );
  }
}


TextFormField(
   inputFormatters: [
            CapitalCaseTextFormatter()
                  ]
)

Upvotes: 1

Views: 3925

Answers (2)

Jahidul Islam
Jahidul Islam

Reputation: 12575

Use this for capitalize each sentence first word


extension CapExtension on String {
  String capitalizeSentence() {
  // Each sentence becomes an array element
  var sentences = this.split('.');
  // Initialize string as empty string
  var output = '';
  // Loop through each sentence
  for (var sen in sentences) {
    // Trim leading and trailing whitespace
    var trimmed = sen.trim();
    // Capitalize first letter of current sentence
    var capitalized = "${trimmed[0].toUpperCase() + trimmed.substring(1)}";
    // Add current sentence to output with a period
    output += capitalized + ". ";
  }
  return output;
}
}

// Text input formatter

class CapitalCaseTextFormatter extends TextInputFormatter {
  @override
  TextEditingValue formatEditUpdate(
      TextEditingValue oldValue, TextEditingValue newValue) {
    return TextEditingValue(
      text: newValue.text.capitalizeSentence,
      selection: newValue.selection,
    );
  }
}

Upvotes: 1

Faiizii Awan
Faiizii Awan

Reputation: 1710

Add textCapitalization property

TextFormField(
   textCapitalization: TextCapitalization.sentences,
   inputFormatters: [
            CapitalCaseTextFormatter() //no need of it then
                  ]
)

Upvotes: 1

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