@Override public Parcelable onSaveInstanceState(){
  String path=mPhotoFilePath.get();
  if (path == null)   return null;
  Bundle bundle=new Bundle();
  bundle.putString("photoFilePath",path);
  return bundle;
}

@ Override public Parcelable onSaveInstanceState ( ) { String path = mPhotoFilePath . get ( ) ; if ( path == null ) return null ; Bundle bundle = new Bundle ( ) ; bundle . putString ( "photoFilePath" , path ) ; return bundle ; }
saves photo file path during e . g . screen rotation
