My spinner setOnItemClickListner declarations:

        gradeSpinner.setOnItemClickListener(this);
        departmentSpinner.setOnItemClickListener(this);

My onItemClick method:

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        switch (view.getId()) {
            case R.id.gradeSpinner:
                gradeIndex = position;
                break;
            case R.id.departmentSpinner:
                departmentIndex = position;
                break;
            default:
                throw new IllegalStateException("Unexpected value: " + view.getId());
        }
    }

My fragment declaration:

public class FragmentUserAdd extends Fragment implements OnClickListener, AdapterView.OnItemClickListener {