linkText function

Implementation

Widget linkText(String text, TextStyle style) {
  final urlRegExp = RegExp(r'(https?:\/\/[^\s]+)', caseSensitive: false);

  final spans = <TextSpan>[];
  final matches = urlRegExp.allMatches(text);

  int start = 0;
  for (final match in matches) {
    if (match.start > start) {
      spans.add(
        TextSpan(text: text.substring(start, match.start), style: style),
      );
    }

    final url = match.group(0)!;
    spans.add(
      TextSpan(
        text: url,
        style: style.copyWith(
          color: Colors.blue,
          decoration: TextDecoration.underline,
        ),
        recognizer: TapGestureRecognizer()
          ..onTap = () async {
            final uri = Uri.parse(url);
            if (await canLaunchUrl(uri)) {
              await launchUrl(uri, mode: LaunchMode.externalApplication);
            }
          },
      ),
    );
    start = match.end;
  }

  if (start < text.length) {
    spans.add(TextSpan(text: text.substring(start), style: style));
  }

  return SelectableText.rich(TextSpan(children: spans));
}