Android基础应用之 ViewPager

/**
 * this is a sample show how to  use  ViewPager
 * edited by Kwanvin
 */

//Layout  xml  
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:id="@+id/multiview_layout"
    android:background="#555555">

    <android.support.v4.view.ViewPager  
        android:id="@+id/pager"  
        android:layout_width="fill_parent"  
        android:layout_height="fill_parent"  
    />  
</LinearLayout>



//import   we need to use   android.support.v4
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;

//define viewpager
private ViewPager mViewPager;  
private ArrayList<View> mViewsList;

//data init
mViewPager = (ViewPager)findViewById(R.id.pager);  

mViewsList = new ArrayList<View>();
mViewsList.add(getLayoutInflater().inflate(R.layout.activity_dvd,null));
mViewsList.add(getLayoutInflater().inflate(R.layout.activity_tv,null));
mViewsList.add(getLayoutInflater().inflate(R.layout.activity_light,null));

//setAdapter
mViewPager.setAdapter(new MyPagerAdapter());
//setPageChangeListerner
mViewPager.setOnPageChangeListener(new MyPagerOnPageChangeListener());

private class MyPagerAdapter extends PagerAdapter{  
        
        @Override  
        public void destroyItem(View v, int position, Object obj) {  
            // TODO Auto-generated method stub  
            ((ViewPager)v).removeView(mViewsList.get(position));  
        }  

        @Override  
        public void finishUpdate(View arg0) {  
            // TODO Auto-generated method stub  
              
        }  

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

        @Override  
        public Object instantiateItem(View v, int position) {  
            ((ViewPager)v).addView(mViewsList.get(position));  
            return mViewsList.get(position);  
        }  

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

        @Override  
        public void restoreState(Parcelable arg0, ClassLoader arg1) {  
            // TODO Auto-generated method stub  
              
        }  

        @Override  
        public Parcelable saveState() {  
            // TODO Auto-generated method stub  
            return null;  
        }  

        @Override  
        public void startUpdate(View arg0) {  
            // TODO Auto-generated method stub  
        }  
    }  
    
    
    private class MyPagerOnPageChangeListener implements OnPageChangeListener{  
          
        @Override  
        public void onPageScrollStateChanged(int arg0) {  
            // TODO Auto-generated method stub  
              
        }  
 
        @Override  
        public void onPageScrolled(int arg0, float arg1, int arg2) {  
            // TODO Auto-generated method stub  
              
        }  

        @Override  
        public void onPageSelected(int position) {  
            // TODO Auto-generated method stub  
            Log.d(TAG, "PageSelected="+position);  
        }  
    }