Android:ViewPager

下面是一个实例，

目录层次结构如下：



main.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
>
</android.support.v4.view.ViewPager>

</LinearLayout>

　　view01.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="the first"
/>

</LinearLayout>

　　view02.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="the first"
/>

</LinearLayout>

　　view03,view04略。

MyPagerAdapter.java:

package com.wyl.veiwpager;

import java.util.List;

import android.support.v4.view.PagerAdapter;
import android.view.View;
import android.view.ViewGroup;

public class MyPagerAdapter extends PagerAdapter {
private List<View> viewList;
private List<String> titleList;

/*
* 建立一个构造方法：
*/
public MyPagerAdapter(List<View> viewList) {
// ,List<String> titleList
this.viewList = viewList;
// this.titleList = titleList;
}

// 返回所有视图的数量
@Override
public int getCount() {
// TODO Auto-generated method stub
return viewList.size();
}

// 判断视图是否由对象产生
@Override
public boolean isViewFromObject(View arg0, Object arg1) {
// TODO Auto-generated method stub
return arg0 == arg1;
}

// 实例化页面
@Override
public Object instantiateItem(ViewGroup container, int position) {
// TODO Auto-generated method stub
container.addView(viewList.get(position));
return viewList.get(position);
}

// 删除页面
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
// TODO Auto-generated method stub
container.removeView(viewList.get(position));
}

@Override
public CharSequence getPageTitle(int position) {
// TODO Auto-generated method stub
return titleList.get(position);
}
}

MainActivity:

package com.wyl.veiwpager;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.os.Bundle;
import android.support.v4.view.ViewPager;
import android.view.View;

public class MainActivity extends Activity {
private List<View> viewlist;
private ViewPager pager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//初始化viewlist
viewlist = new ArrayList<View>();
/*
* 第二个参数为：布局文件的layoutId
* 第三个参数：    父组件，一般写为null就可以了
*/
View view01 = View.inflate(this, R.layout.view01, null);
View view02 = View.inflate(this, R.layout.view02, null);
View view03 = View.inflate(this, R.layout.view03, null);
View view04 = View.inflate(this, R.layout.view04, null);
/*
* 通过view对象作为ViewPager的数据源
*/
viewlist.add(view01);
viewlist.add(view02);
viewlist.add(view03);
viewlist.add(view04);

//1 初始化ViewPager
pager= (ViewPager) findViewById(R.id.pager);
//2 创建PagerAdapter的适配器
MyPagerAdapter adapter = new MyPagerAdapter(viewlist);
//3 ViewPager加载适配器
pager.setAdapter(adapter);

}

}

　　效果图如下，