Uri.dataFromString() with smiley

main.dart

final content1 = 'hello world';

final content2 = '❤';

void main() {
  final dataUri1 = createDataUri(content1);
  print(dataUri1);
  final dataUri2 = createDataUri(content2);
  print(dataUri2);
}

String createDataUri(String content) { 
  String result;
  try {
     result =   new Uri.dataFromString(content, mimeType: 'text/html').toString();
  } catch (e) {
    result = '$e';
  }
  return result;
}