public class FacultyActivity extends Activity {

  Integer[] facultyImages = {
    R.drawable.faculty01,
    R.drawable.faculty02,
    R.drawable.faculty03
    // add resources for other faculties
  };	
	
  class GalleryAdapter extends BaseAdapter {
    Context context;
    
    public ImageAdapter(Context context) {
      this.context = context;
    }
    
    public int getCount() {
      return facultyImages.length;
    }
    
    public Object getItem(int position) {
      return position;
    }
    
    public long getItemId(int position) {
      return position;
    }
    
    public View getView(int position, View convertView, ViewGroup parent) {
      ImageView imageview;
      if (convertView == null) {
        imageview = new ImageView(context);
        imageview.setImageResource(facultyImages [position]);
        imageview.setScaleType(ImageView.ScaleType.FIT_XY);
        imageview.setLayoutParams(new Gallery.LayoutParams(160, 120));
      } else {
        imageview = (ImageView)convertView;
      }
      return imageview;
    }
  }

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_faculty);
    
    Gallery gallery = (Gallery)findViewById(R.id.gallery);
    gallery.setAdapter(new GalleryAdapter(this));
    gallery.setOnItemClickListener(new AdapterView.OnItemClickListener() {
      @Override
      public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        ImageView imageview = (ImageView)(findViewById(R.id.imageview));
        imageview.setImageResource(facultyImages [position]);
      }
    });
  }
}