flutter中int数字转ascii字符

// int 转 ascii 字符，flutter中没有char类型，可以通过Uint8List来转换
  int figure = (Random().nextInt(26)) + 97;
  print('数字' + figure.toString());
  var listInt = [figure];
  print('listInt = ' + listInt.toString());
  var int2utf8 = Uint8List.fromList(listInt);
  print('Uint8List = ' + int2utf8.toString());
  var character = Utf8Codec().decode(int2utf8);
  print('character = ' + character);
  print('数字' + figure.toString() + '=' + character);