Flutter Unable to create directory (OS Error: Read-only file system)

Got it (Using path_provider plugin to get correct path)

Directory appDocDirectory = await getApplicationDocumentsDirectory();

new Directory(appDocDirectory.path+"https://stackoverflow.com/"+'dir').create(recursive: true)
// The created directory is returned as a Future.
    .then((Directory directory) {
  print('Path of New Dir: '+directory.path);
});