import android.os.Bundle;

 import android.support.v4.app.Fragment;

 import android.support.v4.view.ViewPager;

 import android.view.LayoutInflater;

 import android.view.View;

 import android.view.ViewGroup;

 import com.txw.e.viewpager.R;

 public class ViewPagerMain extends Fragment {

     //1，在layout.xml中添加 ViewPagerFragment,它可以是顶级布局，如下：

     /*

     <?xml version="1.0" encoding="utf-8"?>

     <android.support.v4.view.ViewPagerFragment

         android:id="@+id/view_pager"

         xmlns:android="http://schemas.android.com/apk/res/android"

         android:layout_width="match_parent"

         android:layout_height="match_parent"/>

     */

     //2，准备变量,ViewPager和 PagerAdapter ,OnPageChangeListener

     ViewPager pager;

     ViewPagerAdapter pagerAdapter;

     ViewPager.SimpleOnPageChangeListener simpleOnPageChangeListener;

     //3，初始化pager

     void initPager(View v){

         //从layout.xml中初始化pager

         pager = (ViewPager) v.findViewById(R.id.view_pager);

         //初始化page adapter

         pagerAdapter = new ViewPagerAdapter(getFragmentManager());

         //设置adapter

         pager.setAdapter(pagerAdapter);

         //设置page切换监听者

         simpleOnPageChangeListener = new ViewPager.SimpleOnPageChangeListener();

         pager.addOnPageChangeListener(simpleOnPageChangeListener);

         //设置pager切换动画

         pager.setPageTransformer(true, new DepthPageTransformer());

     }

     //4，处理 pager 切换事件

     //这里用的ViewPager.SimpleOnPageChangeListener,它什么也不做。

     //5，重写切换动画类，可以把这个类放到外面去。

     public class DepthPageTransformer implements ViewPager.PageTransformer {

         private static final float MIN_SCALE = 0.75f;

         public void transformPage(View view, float position) {

             int pageWidth = view.getWidth();

             if (position < -) { // [-Infinity,-1)

                 // This page is way off-screen to the left.

                 view.setAlpha();

             } else if (position <= ) { // [-1,0]

                 // Use the default slide transition when moving to the left page

                 view.setAlpha();

                 view.setTranslationX();

                 view.setScaleX();

                 view.setScaleY();

             } else if (position <= ) { // (0,1]

                 // Fade the page out.

                 view.setAlpha( - position);

                 // Counteract the default slide transition

                 view.setTranslationX(pageWidth * -position);

                 // Scale the page down (between MIN_SCALE and 1)

                 float scaleFactor = MIN_SCALE

                         + ( - MIN_SCALE) * ( - Math.abs(position));

                 view.setScaleX(scaleFactor);

                 view.setScaleY(scaleFactor);

             } else { // (1,+Infinity]

                 // This page is way off-screen to the right.

                 view.setAlpha();

             }

         }

     }

     @Override

     public View onCreateView(LayoutInflater inflater, ViewGroup container,

                              Bundle savedInstanceState) {

         // Inflate the layout for this fragment

         View v = inflater.inflate(R.layout.fragment_pager_main, container, false);

         initPager(v);

         return v;

     }

 }

 import android.os.Bundle;

 import android.support.v4.app.Fragment;

 import android.support.v4.app.FragmentManager;

 import android.support.v4.app.FragmentPagerAdapter;

 public class ViewPagerAdapter extends FragmentPagerAdapter{

     /*

     适合只有少量的pager，所有pager同时全部存在，不会有被销毁的，page过多很容易内存溢出.

     */

     public ViewPagerAdapter(FragmentManager fm) {

         super(fm);

     }

     @Override

     public Fragment getItem(int position) {

         System.out.println("getItem:create fragment");

         ViewPagerFragment fragment = new ViewPagerFragment();

         Bundle args = new Bundle();

         args.putInt("ID",position);

         fragment.setArguments(args);

         return fragment;

     }

     @Override

     public int getCount() {

         return ;

     }

 }

 import android.os.Bundle;

 import android.support.v4.app.Fragment;

 import android.view.LayoutInflater;

 import android.view.View;

 import android.view.ViewGroup;

 import android.widget.TextView;

 import com.txw.e.viewpager.R;

 public class ViewPagerFragment extends Fragment {

     @Override

     public void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

         System.out.println("ViewPagerFragment" + getArguments().getInt("ID") + "::onCreate()");

     }

     @Override

     public View onCreateView(LayoutInflater inflater, ViewGroup container,

                              Bundle savedInstanceState) {

         // Inflate the layout for this fragment

         View v = inflater.inflate(R.layout.fragment_pager, container, false);

         TextView tv = (TextView) v.findViewById(R.id.view_pager_content);

         Bundle args = getArguments();

         int position = args.getInt("ID");

         tv.setText("ViewPagerFragment " + position);

         v.setTranslationX(- * v.getWidth() * position);

         return v;

     }

     @Override

     public void onDestroy() {

         super.onDestroy();

         System.out.println("ViewPagerFragment" + getArguments().getInt("ID") + "::onDestroy()");

     }

 }

 <?xml version="1.0" encoding="utf-8"?>

 <android.support.v4.view.ViewPager

     android:id="@+id/view_pager"

     xmlns:android="http://schemas.android.com/apk/res/android"

     android:background="#FFFFFF"

     android:layout_width="match_parent"

     android:layout_height="match_parent"/>

 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"

              xmlns:tools="http://schemas.android.com/tools"

              android:layout_width="match_parent"

              android:layout_height="match_parent"

              android:background="#FFFFFF"

              tools:context=".ViewPager.ViewPagerFragment">

     <TextView

         android:id="@+id/view_pager_txt"

         android:layout_width="match_parent"

         android:layout_height="wrap_content"

         android:text="适合只有少量的pager，所有pager同时全部存在，不会有被销毁的，page过多很容易内存溢出.\n可以在LogCat中查看page对应的Fragment\n的onCreate,onDestory"/>

     <TextView

         android:id="@+id/view_pager_content"

         android:layout_width="match_parent"

         android:layout_height="match_parent"

         android:gravity="center_horizontal|center_vertical"

         android:text="@string/hello_blank_fragment"/>

 </FrameLayout>