句号“.”后第一个单词的TextField值首字母如何大写？

Question

这种事情可能吗？

示例：“我最喜欢的电影是黑客帝国。而且我认为...”

之前也有人问过类似的问题，但都是简单的大写第一个单词的第一个字母，而不是更多

此代码仅适用于第一个单词的第一个字母，无法理解“.”

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()
                  ]
)

Answer 1

添加textCapitalization属性

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

Answer 2

使用这个将每个句子的第一个单词大写


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;
}
}

// 文本输入格式化程序

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

句号“.”后第一个单词的TextField值首字母如何大写？

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

textfield

dart

flutter