public class EditProfileFragment extends Fragment implements DatePickerDialog.OnDateSetListener {

    private final String TAG = "CompleteProfileInfoFragment";

    private Calendar birthDate;

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_complete_profile, container, false);

        vBirthDate = (Button) view.findViewById(R.id.birthdate);
        vBirthDate.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showDatePickerDialog();
            }
        });
        
        return view;
    }

    @Override
    public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {

        birthDate = Calendar.getInstance();
        birthDate.set(Calendar.YEAR, year);
        birthDate.set(Calendar.MONTH, monthOfYear);
        birthDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);

        vBirthDate.setText(new SimpleDateFormat("dd-MM-y").format(birthDate.getTime()));
        vBirthDate.setHint("");
    }

    public void showDatePickerDialog() {
        DialogFragment newFragment = new DatePickerFragment();
        if (birthDate != null) {
            Bundle bundle = new Bundle();
            bundle.putSerializable("date", birthDate);
            newFragment.setArguments(bundle);
        }
        newFragment.setTargetFragment(this, 0);
        newFragment.show(getActivity().getSupportFragmentManager(), "datePicker");
    }

}