Viewparge(无限轮播)

package com.example.day7viewpager3;

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

import android.os.Bundle;
import android.os.Handler;
import android.app.Activity;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

public class MainActivity extends Activity {
    int miao = 0;
    Handler handler = new Handler(){
        public void handleMessage(android.os.Message msg) {
            miao++;
            sendEmptyMessageDelayed(0, 1000);
            vp.setCurrentItem(miao);
        };
    };



    ViewPager vp;
    List<View> list;

    int[] array = { R.drawable.guide1, R.drawable.guide2, R.drawable.guide3, R.drawable.ic_launcher };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

      /*
       * 1 2 3 4
       */
        vp = (ViewPager) findViewById(R.id.vp);
        initData();
        MyPagerAdapter adapter = new MyPagerAdapter();
        vp.setAdapter(adapter);
        handler.sendEmptyMessage(0);


    }

    private void initData() {
        list = new ArrayList<View>();
        for (int i = 0; i < array.length; i++) {
            View view = View.inflate(MainActivity.this, R.layout.vp_item, null);
            ImageView iv = (ImageView) view.findViewById(R.id.iv);
            TextView tv = (TextView) view.findViewById(R.id.tv);
            iv.setImageResource(array[i]);
            tv.setText("我是第" + i + "张图片");
            list.add(view);
        }
    }

    class MyPagerAdapter extends PagerAdapter {

        @Override
        public int getCount() {
//       if (list != null) {
//          return list.size();
//       }
            return Integer.MAX_VALUE;
        }

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

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

        @Override
        public Object instantiateItem(ViewGroup container, int position) {
            // TODO Auto-generated method stub
            //如果给getCount方法返回的值是  最大值  那么position这个索引  会一直增长
            int index = position % list.size();
            container.addView(list.get(index));
            return list.get(index);
        }

    }

}