see you can attach a fragment to an activity.
like as :-
FragmentManager fm = getFragmentManager();
if (fm.findFragmentById(android.R.id.content) == null) {
BusModelsActivity list = new BusModelsActivity ();
fm.beginTransaction().add(android.R.id.content, list).commit();
}
And then after navigate like as follows:-
Intent intent = new Intent(BusSearchParamActivity.this,YourActivity.class);
startActivity(intent);
and that activity should be present in the AndroidManifest.xml