read files in dir

readfiles.dart

var d = new Directory("PATH");
d.exists().then((bool exists) {
  if (!exists)
    return;
    
  d.list().toList().then((List<FileSystemEntity> entities) {
    entities.forEach((FileSystemEntity entity) {
      if (entity is File) {
        // Do something with the file
      }
    }
  });
});