Android使用viewpager实现自动无限轮播图

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<&＃63;xml version="1.0" encoding="utf-8"&＃63;> 
 
   
   
 

 /** 
   * 初始化数据 
   */ 
  private void initData() { 
    mCOntext= this; 
    int[] i = new int[] { R.drawable.bg_lunbo1, R.drawable.bg_lunbo2, R.drawable.bg_lunbo3, R.drawable.bg_lunbo4 }; 
    al = new ArrayList(); 
    for (int x = 0; x 

class Myadapter extends PagerAdapter { 
    @Override 
    public int getCount() { 
      return Integer.MAX_VALUE; // 要无限轮播 
    } 
    @Override 
    public boolean isViewFromObject(View arg0, Object arg1) { 
      return arg0 == arg1; 
    } 
    @Override 
    public Object instantiateItem(ViewGroup container, int position) { 
        int position1=position % al.size();    
        ImageView imageView = al.get(position1); 
        container.addView(imageView); 
        return imageView; 
    } 
    @Override 
    public void destroyItem(ViewGroup container, int position, Object object) { 
      container.removeView((View)object); 
    } 
  } 

vp_pager.setOnPageChangeListener(this); 

@Override 
public void onPageScrollStateChanged(int arg0) { 
} 
@Override 
public void onPageScrolled(int arg0, float arg1, int arg2) { 
} 
@Override 
public void onPageSelected(int position) { 
   int newPosition = position % al.size();  
   ll_container.getChildAt(newPosition).setBackgroundResource(R.drawable.point_select); 
   ll_container.getChildAt(prePosition).setBackgroundResource(R.drawable.point_normal); 
   prePosition=newPosition; 
} 

/** 
   * 自动轮询 
   */ 
  private void pollint() { 
   pThread = new PollThread(); 
   pThread.start(); 
  } 
class PollThread extends Thread{ 
    @Override 
    public void run() { 
      while (poll){          
                try { 
          Thread.sleep(2000); 
        } catch (InterruptedException e) { 
          e.printStackTrace(); 
        }