public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment


    View v= inflater.inflate(R.layout.fragment_tab3, container, false);

    mapbtn = (Button) v.findViewById(R.id.mapButton);

    mapbtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {

            Intent intent = new Intent(getActivity(), MapsActivity.class);
            startActivity(intent);
        }
    });

    return v;

}