一、新建项目，引入ViewPager控件

ViewPager。它是google SDk中自带的一个附加包的一个类，能够用来实现屏幕间的切换。

2、新建四个LinearLayout，用于滑动切换的视图

3加载代码段将视图加载Viewpager中

import android.R.id;import android.app.Activity;import android.os.Bundle;import android.support.v4.view.PagerAdapter;import android.support.v4.view.PagerTabStrip;import android.support.v4.view.ViewPager;import android.support.v4.view.ViewPager.OnPageChangeListener;import android.util.Log;import android.view.LayoutInflater;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.ViewGroup;public class MainActivity extends Activity {	ViewPager ViewPager = null;	public String TAG = "tag";	ArrayList
     
       viewContainter = new ArrayList
      
       ();    ArrayList
       
         titleContainer = new ArrayList
        
         ();		@SuppressWarnings("deprecation")	@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.activity_main);		ViewPager = (ViewPager)findViewById(R.id.pager);                 View view1 = LayoutInflater.from(this).inflate(R.layout.tab1, null);        View view2 = LayoutInflater.from(this).inflate(R.layout.tab2, null);        View view3 = LayoutInflater.from(this).inflate(R.layout.tab3, null);        View view4 = LayoutInflater.from(this).inflate(R.layout.tab4, null);        //viewpager開始加入view        viewContainter.add(view1);        viewContainter.add(view2);        viewContainter.add(view3);        viewContainter.add(view4);                        ViewPager.setAdapter(new PagerAdapter() {        	             //viewpager中的组件数量            @Override            public int getCount() {                return viewContainter.size();            }          //滑动切换的时候销毁当前的组件            @Override            public void destroyItem(ViewGroup container, int position,                    Object object) {                ((ViewPager) container).removeView(viewContainter.get(position));            }          //每次滑动的时候生成的组件            @Override            public Object instantiateItem(ViewGroup container, int position) {                ((ViewPager) container).addView(viewContainter.get(position));                return viewContainter.get(position);            }             @Override            public boolean isViewFromObject(View arg0, Object arg1) {                return arg0 == arg1;            }             @Override            public int getItemPosition(Object object) {                return super.getItemPosition(object);            }         });         ViewPager.setOnPageChangeListener(new OnPageChangeListener() {            @Override            public void onPageScrollStateChanged(int arg0) {            }             @Override            public void onPageScrolled(int arg0, float arg1, int arg2) {            }             @Override            public void onPageSelected(int arg0) {            }        }); 	}	@Override	public boolean onCreateOptionsMenu(Menu menu) {		// Inflate the menu; this adds items to the action bar if it is present.		getMenuInflater().inflate(R.menu.main, menu);		return true;	}	@Override	public boolean onOptionsItemSelected(MenuItem item) {		// Handle action bar item clicks here. The action bar will		// automatically handle clicks on the Home/Up button, so long		// as you specify a parent activity in AndroidManifest.xml.		int id = item.getItemId();		if (id == R.id.action_settings) {			return true;		}		return super.onOptionsItemSelected(item);	}}

代码具体解释

1.定义一个ViewPager的容器

ViewPager ViewPager = null;ArrayList
     
       viewContainter = new ArrayList
      
       ();

2.初始化换View和ViewPager且加入到View的容器viewContainter中

View view1 = LayoutInflater.from(this).inflate(R.layout.tab1, null);        View view2 = LayoutInflater.from(this).inflate(R.layout.tab2, null);        View view3 = LayoutInflater.from(this).inflate(R.layout.tab3, null);        View view4 = LayoutInflater.from(this).inflate(R.layout.tab4, null);        //viewpager開始加入view        viewContainter.add(view1);        viewContainter.add(view2);        viewContainter.add(view3);        viewContainter.add(view4);

3.加入到PagerAdapter中而且设置监听

ViewPager.setAdapter(new PagerAdapter() {        	             //viewpager中的组件数量            @Override            public int getCount() {                return viewContainter.size();            }          //滑动切换的时候销毁当前的组件            @Override            public void destroyItem(ViewGroup container, int position,                    Object object) {                ((ViewPager) container).removeView(viewContainter.get(position));            }          //每次滑动的时候生成的组件            @Override            public Object instantiateItem(ViewGroup container, int position) {                ((ViewPager) container).addView(viewContainter.get(position));                return viewContainter.get(position);            }             @Override            public boolean isViewFromObject(View arg0, Object arg1) {                return arg0 == arg1;            }             @Override            public int getItemPosition(Object object) {                return super.getItemPosition(object);            }             @Override            public CharSequence getPageTitle(int position) {                return titleContainer.get(position);            }        });         ViewPager.setOnPageChangeListener(new OnPageChangeListener() {            @Override            public void onPageScrollStateChanged(int arg0) {            }             @Override            public void onPageScrolled(int arg0, float arg1, int arg2) {            }             @Override            public void onPageSelected(int arg0) {            }        });

PageAdapter 必须重写的四个函数：

boolean isViewFromObject(View arg0, Object arg1)

int getCount()

void destroyItem(ViewGroup container, int position,Object object)

Object instantiateItem(ViewGroup container, int position)

先看看各个函数，我们上面都做了什么吧：

[java]
 @Override  
 public int getCount() {  
     // TODO Auto-generated method stub  
     return viewList.size();  
 }  

getCount():返回要滑动的VIew的个数

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

destroyItem（）：从当前container中删除指定位置（position）的View;

[java]
 @Override  
 public Object instantiateItem(ViewGroup container, int position) {  
     // TODO Auto-generated method stub  
         container.addView(viewList.get(position));  
           
           
         return viewList.get(position);  
     }  
 };  

instantiateItem()：做了两件事，第一：将当前视图加入到container中，第二：返回当前View

[java]
 @Override  
 public boolean isViewFromObject(View arg0, Object arg1) {  
     // TODO Auto-generated method stub  
     return arg0 == arg1;  
 }  