Android中viewpager轮播图小点儿

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//使用handler实现图片的无限轮播
   Handler handler=new Handler(){
       public void handleMessage(android.os.Message msg) {
           if(msg.what==0){
               int currentItem = pager2.getCurrentItem();
               currentItem++;
               pager2.setCurrentItem(currentItem);
               //图片延迟两秒发送
               handler.sendEmptyMessageDelayed(0, 3000);
           }
       };

};

//设置适配器

class MyComicAdapter extends PagerAdapter{



       private ArrayList<Integer> mangelist;
       public MyComicAdapter(ArrayList<Integer> mangelist) {
           this.mangelist=mangelist;
       }

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

       @Override
       public boolean isViewFromObject(View arg0, Object arg1) {
           // TODO Auto-generated method stub
           return arg0==arg1;
       }
       @SuppressLint("NewApi")
       @Override
       public Object instantiateItem(ViewGroup container, int position) {
           View view2 = View.inflate(getActivity(),R.layout.image , null);
           ImageView page_image=(ImageView) view2.findViewById(R.id.page_image);
   //   page_image.setImageResource(mangelist.get(position%mangelist.size()));
          page_image.setBackground(getActivity().getResources().getDrawable(mangelist.get(position%mangelist.size())));
           container.addView(view2);
           return view2;
       }
       @Override
       public void destroyItem(ViewGroup container, int position, Object object) {
           // TODO Auto-generated method stub
       //   super.destroyItem(container, position, object);
           container.removeView((View) object);
       }

//viewpager设置改变监听事件分为选中和未选中的两种状态

    pager2.setOnPageChangeListener(new OnPageChangeListener() {

           @Override
           public void onPageSelected(int position) {
               for(int i=0;i<dotslist.size();i++){
                   if(position%mangelist.size()==i){
                       dotslist.get(i).setImageDrawable(getResources().getDrawable(R.drawable.foused));
                   }else{
                       dotslist.get(i).setImageDrawable(getResources().getDrawable(R.drawable.normal));

                   }
               }
           }

           @Override
           public void onPageScrolled(int arg0, float arg1, int arg2) {
               // TODO Auto-generated method stub

           }

           @Override
           public void onPageScrollStateChanged(int arg0) {
               // TODO Auto-generated method stub

           }
       });

       return view;
   }
   //小圆点儿的代码配合xml文件的绘制
   private void initView() {
       dotslist = new ArrayList<ImageView>();
       laydian.removeAllViews();
       dotslist.clear();
       for(int i=0;i<mangelist.size();i++){
           ImageView imageView=new ImageView(getActivity());
           //判断加小店
           if(i==0){
               imageView.setImageDrawable(getResources().getDrawable(R.drawable.foused));
           }else{
               imageView.setImageDrawable(getResources().getDrawable(R.drawable.normal));

           }
           //设置小点儿的宽高
       LayoutParams params=new LayoutParams(20,20);
       params.setMargins(5, 0, 5, 0);
       //给布局添加imageview
       laydian.addView(imageView, params);
       dotslist.add(imageView);
       }


   }

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