public class ExtendedGallery extends Gallery
{
	  public ExtendedGallery(Context context, AttributeSet attrs, int defStyle) {
	    super(context, attrs, defStyle);
	  }

	  public ExtendedGallery(Context context, AttributeSet attrs) {
	    super(context, attrs);
	  }

	  public ExtendedGallery(Context context)
	  {
	    super(context);
	  }

	  // ---------------> to show one image at a time

	  private boolean isScrollingLeft(MotionEvent e1, MotionEvent e2){
		  return e2.getX() > e1.getX();
		}

		@Override
		public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY){
		  int kEvent;
		  if(isScrollingLeft(e1, e2)){ //Check if scrolling left
		    kEvent = KeyEvent.KEYCODE_DPAD_LEFT;
		  }
		  else{ //Otherwise scrolling right
		    kEvent = KeyEvent.KEYCODE_DPAD_RIGHT;
		  }
		  onKeyDown(kEvent, null);
		  return true;
		}
}