The method OpenFileOutput() is undefined !
Those are methods defined on the Context class, not methods defined in your class. When your code was part of an Activity, it could use a convenience method openFileInput() in its Activity base class to access the underlying Context.getApplicationContext().openFileInput() (and similarly for openFileOutput()).
Now you'll have to replace those with the direct calls to the underlying Context methods.
Replace
FileOutputStream fos = openFileOutput(Adress, Context.MODE_PRIVATE);with below line
FileOutputStream fos = getApplicationContext().openFileOutput(filename, getActivity().MODE_PRIVATE);If used inside Fragment
FileOutputStream fos =getActivity().openFileOutput(filename, getActivity().MODE_PRIVATE);