requestPermissions method

@override Future<bool> requestPermissions()

Ensure to requests photo library permission before access

return true if permission is granted, otherwise false

Implementation

@override
Future<bool> requestPermissions() async {
  version = await getVersion();
  if (!allowed) {
    final permission = await _getPermissionsGroup();
    allowed = await permission.request().isGranted;
    if (!allowed) {
      throw Exception("error_accessdenied");
    }
  }

  return allowed;
}