android用ViewPager实现欢迎界面

package com.mytest.huilife;

import java.util.List;

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

public class WelcomePagerAdapter extends PagerAdapter {

private List<View> pageList;

public WelcomePagerAdapter(List<View> pageList) {
this.pageList = pageList;
}

@Override
public void destroyItem(View arg0, int arg1, Object arg2) {
ViewGroup vg = (ViewGroup) arg0;
vg.removeView(pageList.get(arg1));

}

@Override
public void finishUpdate(View arg0) {

}

@Override
public int getCount() {
return pageList.size();
}

@Override
public Object instantiateItem(View arg0, int arg1) {
ViewGroup vg = (ViewGroup) arg0;
vg.addView(pageList.get(arg1));
return pageList.get(arg1);
}

@Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0 == arg1;
}

@Override
public void restoreState(Parcelable arg0, ClassLoader arg1) {

}

@Override
public Parcelable saveState() {

return null;
}

@Override
public void startUpdate(View arg0) {

}

}