ViewPager无限自动轮播

package com.bwie.view;

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

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;

public class MainActivity extends Activity {
	List<View> views=new ArrayList<View>();
	private ViewPager vp;
	private LinearLayout ll_dot;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		vp = (ViewPager) findViewById(R.id.vp);
		ll_dot=(LinearLayout)findViewById(R.id.ll_dot);
		init();
		loaddot();
		vp.setAdapter(adapter);
		vp.setCurrentItem(views.size()*100000);
		sendmesg();
		vp.setOnPageChangeListener(listener);
	}
	Handler handler=new Handler(){
		public void handleMessage(android.os.Message msg) {
			int item=vp.getCurrentItem();
			item++;
			vp.setCurrentItem(item);
			sendEmptyMessageDelayed(0, 2000);
		}
	};
	private void sendmesg() {
		handler.sendEmptyMessageDelayed(0, 2000);
	}
	OnPageChangeListener listener=new OnPageChangeListener() {
		@Override
		public void onPageSelected(int arg0) {
			for (int i = 0; i < imgs.size(); i++) {
				if(arg0%imgs.size()==i){
					imgs.get(i).setImageResource(R.drawable.dot_fouces);
				}else{
					imgs.get(i).setImageResource(R.drawable.dot_normal);
				}
			}
		}
		@Override
		public void onPageScrolled(int arg0, float arg1, int arg2) {
		}
		@Override
		public void onPageScrollStateChanged(int arg0) {
		}
	};
	public void init(){
		View v1=View.inflate(this, R.layout.v1, null);
		View v2=View.inflate(this, R.layout.v2, null);
		View v3=View.inflate(this, R.layout.v3, null);
		View v4=View.inflate(this, R.layout.v4, null);
		View v5=View.inflate(this, R.layout.v5, null);
		views.add(v1);
		views.add(v2);
		views.add(v3);
		views.add(v4);
		views.add(v5);
	}
	public void loaddot(){
		imgs = new ArrayList<ImageView>();
		imgs.clear();
		for (int i = 0; i < views.size(); i++) {
			ImageView iView=new ImageView(this);
			if(i==0){
				iView.setImageResource(R.drawable.dot_fouces);
			}else{
				iView.setImageResource(R.drawable.dot_normal);
			}
			LayoutParams params=new LayoutParams(20, 20);
			params.setMargins(5, 0, 5, 0);
			ll_dot.addView(iView, params);
			imgs.add(iView);
		}
	}
	PagerAdapter adapter=new PagerAdapter() {
		@Override
		public boolean isViewFromObject(View arg0, Object arg1) {
			return arg0==arg1;
		}
		
		@Override
		public int getCount() {
			return Integer.MAX_VALUE;
		}
		@Override
		public Object instantiateItem(ViewGroup container, int position) {
			View view= views.get(position%views.size());
			view.setOnTouchListener(new OnTouchListener() {
				
				@Override
				public boolean onTouch(View v, MotionEvent event) {
					switch (event.getAction()) {
					case MotionEvent.ACTION_DOWN:
						handler.removeCallbacksAndMessages(null);
						break;
					case MotionEvent.ACTION_UP:
						handler.sendEmptyMessageDelayed(0, 2000);
						break;
					case MotionEvent.ACTION_CANCEL:
						handler.sendEmptyMessageDelayed(0, 2000);
						break;
					default:
						break;
					}
					return true;
				}
			});
			container.addView(view);
			return views.get(position%views.size());
		}
		@Override
		public void destroyItem(ViewGroup container, int position, Object object) {
			container.removeView((View) object);
		}
	};
	private List<ImageView> imgs;
}

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
	<corners android:radius="8dp"></corners>
	<solid android:color="#fff"></solid>
</shape>

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
	<corners android:radius="8dp"></corners>
	<solid android:color="#88000000"></solid>
</shape>