ViewPager -- 横向切换页面

<!--PagerTitleStrip(bottom) PagerTabStrip(top) 通常二选一去作-->

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

        <android.support.v4.view.PagerTabStrip
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/tab"
            android:layout_gravity="top"
            />
    </android.support.v4.view.ViewPager>


public class MyPagerAdapter extends PagerAdapter{

    /**
     *  通常都是3个页面加载,左中右
     */

    /**
     * 成员属性
     */
    private List<View>viewList;
    private List<String>titleList;

    /**
     * 构造函数
     */
    public MyPagerAdapter(List<View>viewList,List<String>titleList)
    {
        this.viewList = viewList;
        this.titleList = titleList;
    }
    /**
     * 返回的是页卡的数量
     */
    @Override
    public int getCount() {
        return viewList.size();
    }

    /**
     * 页卡是不是对象
     */
    @Override
    public boolean isViewFromObject(View view, Object object) {
        return view == object;
    }

    /**
     * 实例化一个页卡
     */
    @Override
    public Object instantiateItem(ViewGroup container, int position) {
        container.addView(viewList.get(position));
        return viewList.get(position);
    }

    /**
     * 销毁一个页卡
     */
    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
        container.removeView(viewList.get(position));
    }

    /**
     * 设置标题
     */
    @Override
    public CharSequence getPageTitle(int position) {
        return titleList.get(position);
    }
}


public class ViewPagerActivity extends Activity implements ViewPager.OnPageChangeListener{

    private ViewPager viewPager;
    private List<View>viewList;
    private PagerTabStrip tabStrip;
    private List<String>titleList;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.acitivity_viewpager);

        viewPager = (ViewPager)findViewById(R.id.viewpager);
        tabStrip = (PagerTabStrip)findViewById(R.id.tab);

        viewList = new ArrayList<View>();
        View view1 = View.inflate(this,R.layout.view1,null);
        View view2 = View.inflate(this,R.layout.view2,null);
        View view3 = View.inflate(this,R.layout.view3,null);
        View view4 = View.inflate(this,R.layout.view4,null);
        viewList.add(view1);
        viewList.add(view2);
        viewList.add(view3);
        viewList.add(view4);

        //为viewpager页卡设置标题
        titleList=new ArrayList<String>();
        titleList.add("第一页");
        titleList.add("第二页");
        titleList.add("第三页");
        titleList.add("第四页");

        //设置PagerTabStrip样式
        tabStrip.setBackgroundColor(Color.YELLOW);
        tabStrip.setTextColor(Color.RED);
        tabStrip.setDrawFullUnderline(false);//去掉直线
        tabStrip.setTabIndicatorColor(Color.GREEN);//指示线

        //建立PageAdapter的适配器
        MyPagerAdapter adapter = new MyPagerAdapter(viewList,titleList);

        //加载适配器
        viewPager.setAdapter(adapter);
        viewPager.setOnPageChangeListener(this);

    }

    //监听器
    @Override
    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

    }
    @Override
    public void onPageSelected(int position) {
        Toast.makeText(this,titleList.get(position),Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onPageScrollStateChanged(int state) {

    }
}