Android : Cannot set OnClick for a button inside a TAB

Kindly help.I am new to android TABS. I want my button to take me to a new page when it is clicked on. Currently I am trying to implement the same method as I used to.

public class PhotosActivity extends Activity {
    private Button btnRegularRecrutor;
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.photos_layout);
        btnRegularRecrutor = (Button) findViewById(R.id.RegularRecruters);

        btnRegularRecrutor.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View arg0) {

                // TODO Auto-generated method stub
                Intent A = new Intent(MainActivity.this, RegularRecruters.class);

                startActivity(A);

            }
        });
    }
}

The button should take me to RegularRecruters.class. Thanks in advance