Android ViewPager实现翻页步骤

滑动翻页的效果挺炫的。实现效果主要有几个步骤：

1、创建两个布局文件，一个布局文件定义viewPager组件，如 

<android.support.v4.view.ViewPager          android:id="@+id/vp_articles"          android:layout_width="match_parent"          android:layout_height="wrap_content" >      </android.support.v4.view.ViewPager >；

2、创建一个activity管理viewPager,主要的java代码有：

public class ActivityArticleTest extends BaseActivity {      private ViewPager viewPager = null;   //定义viewPager   private LayoutInflater mInflater = null; //加载布局文件用   private ArrayList<View> viewsList = null;  //用arraylist 存储要展现的view    protected void onCreate(Bundle arg0) {      viewPager = (ViewPager) findViewById(R.id.vp_articles);    mInflater = LayoutInflater.from(this);    viewsList = new ArrayList<View>();      //作为一个例子 往viewList添加View    for(int j =0 ; j<idslist.size();j++){     View view = mInflater.inflate(R.layout.activity_resumption_article, null);     viewsList.add(view);    //给viewPager添加适配器，也可继承PagerAdapter    viewPager.setAdapter(new PagerAdapter() {     @Override     public boolean isViewFromObject(View arg0, Object arg1) {      // TODO Auto-generated method stub      return arg0==arg1;     }     @Override     public int getCount() {      // TODO Auto-generated method stub      return viewsList.size();     }     @Override     public int getItemPosition(Object object) {      // TODO Auto-generated method stub      return viewsList.indexOf(object);     }    //这个方法和下面这个方法慢重要的     @Override     public Object instantiateItem(ViewGroup container, int position) {      container.addView(viewsList.get(position));      return viewsList.get(position);     }     @Override     public void destroyItem(ViewGroup container, int position,       Object object) {      // TODO Auto-generated method stub       container.removeView(viewsList.get(position));      }    });    viewPager.setOnPageChangeListener(new OnPageChangeListener() {     @Override     public void onPageSelected(int arg0) {      //重新发起请求，更新所在view      getDataFromRepreWeb(method, idslist.get(arg0));     }     @Override     public void onPageScrolled(int arg0, float arg1, int arg2) {      // TODO Auto-generated method stub           }          @Override     public void onPageScrollStateChanged(int arg0) {      // TODO Auto-generated method stub           }    });  }              }

模式简单，重要的是和项目的业务结合