import android.content.Context;

import android.util.AttributeSet;

import android.view.KeyEvent;

import android.view.MotionEvent;

import android.widget.Gallery; 

public class DetialGallery extends Gallery { 

    public DetialGallery(Context context ,AttributeSet attrSet) {

     super(context,attrSet);

     // TODO Auto-generated constructor stub

    } 

private boolean isScrollingLeft(MotionEvent e1, MotionEvent e2)

   {

    return e2.getX() > e1.getX();

   }

@Override

public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,

   float velocityY) {

  // TODO Auto-generated method stub

//  return super.onFling(e1, e2, 0, velocityY);//方法一：只去除翻页惯性

//  return false;//方法二：只去除翻页惯性  注：没有被注释掉的代码实现了开始说的2种效果。

  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;

  }

}