public class MainActivity extends Activity {

  private ViewPager viewPager;
  private LinearLayout ll_dot;
   private String[] imageUrls = new String[] {
  "http://pic8.nipic.com/20100701/5290458_114840036316_2.jpg",
   "http://pic2.nipic.com/20090424/1468853_230119053_2.jpg",
   "http://img3.3lian.com/2013/s1/20/d/57.jpg",
  "http://pic39.nipic.com/20140226/18071023_164300608000_2.jpg",
  "http://a0.att.hudong.com/15/08/300218769736132194086202411_950.jpg" };

  //private String[] imageUrls = new String[] {
      //"http://192.168.230.1:8080/ab.jpg",
      //"http://192.168.230.1:8080/ae.jpg",
      //"http://192.168.230.1:8080/af.jpg",
      //"http://192.168.230.1:8080/ah.jpg" };

  private ArrayList<ImageView> viewList;
  private ArrayList<ImageView> dotList;
  Handler handler = new Handler() {
    public void handleMessage(android.os.Message msg) {
      // 先去獲取到當前條目索引
      int currentItem = viewPager.getCurrentItem();
      // 條目索引+1
      currentItem++;
      // 重新設(shè)置給viewPager
      viewPager.setCurrentItem(currentItem);
      // 再調(diào)用發(fā)延時消息的方法
      sendDelayMessage();
    };
  };

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    viewPager = (ViewPager) findViewById(R.id.viewPager);
    ll_dot = (LinearLayout) findViewById(R.id.ll_dot);
    // 初始化圖片
    initViewList();
    // 初始化小圓點
    initDots();
    // 設(shè)置數(shù)據(jù)適配器
    viewPager.setAdapter(new MyPagerAdapter(this, viewList, handler));
    // 設(shè)置初始的展示條目
    viewPager.setCurrentItem(viewList.size() * 100000);
    // 設(shè)置延時切換
    sendDelayMessage();

    // 監(jiān)聽viewPager的一個滑動事件
    viewPager.setOnPageChangeListener(new OnPageChangeListener() {
      @Override
      public void onPageSelected(int position) {
        // 遍歷小點的集合
        for (int i = 0; i < dotList.size(); i++) {
          // 如果當前的索引值和i相等
          if (position % dotList.size() == i) {
            // 設(shè)置小點為亮色
            dotList.get(i).setImageResource(R.drawable.dot_focuse);
          } else {
            // 否則暗色
            dotList.get(i).setImageResource(R.drawable.dot_normal);
          }
        }
      }

      @Override
      public void onPageScrolled(int arg0, float arg1, int arg2) {

      }

      @Override
      public void onPageScrollStateChanged(int arg0) {

      }
    });
  }

  /**
   * 發(fā)送延時消息
   */
  private void sendDelayMessage() {
    handler.sendEmptyMessageDelayed(0, 2000);
  }

  private void initDots() {
    // 創(chuàng)建一個裝小點控件的集合
    dotList = new ArrayList<ImageView>();
    dotList.clear();
    for (int i = 0; i < imageUrls.length; i++) {
      ImageView imageView = new ImageView(this);
      if (i == 0) {
        // 如果是第一張，默認給一個亮的小點
        imageView.setImageResource(R.drawable.dot_focuse);
      } else {
        // 如果不是滴一個，默認給一個暗的小點
        imageView.setImageResource(R.drawable.dot_normal);
      }
      // 設(shè)置小點的默認寬高為20dp
      LayoutParams params = new LayoutParams(20, 20);
      // 設(shè)置小點的間距
      params.setMargins(5, 0, 5, 0);
      ll_dot.addView(imageView, params);
      // 往小點集合中添加view
      dotList.add(imageView);
    }
  }

  private void initViewList() {
    // 先使用xutils的工具類
    BitmapUtils bitmapUtils = new BitmapUtils(this);
    viewList = new ArrayList<ImageView>();
    for (int i = 0; i < imageUrls.length; i++) {
      // 創(chuàng)建imageView 并通過工具類將圖片設(shè)置到控件上
      ImageView imageView = new ImageView(this);
      bitmapUtils.display(imageView, imageUrls[i]);
      viewList.add(imageView);
    }
  }
}

public class MyPagerAdapter extends PagerAdapter {
  private List<ImageView> viewList;
  private Context context;
  private Handler handler;

  public MyPagerAdapter(Context context, List<ImageView> viewList,
      Handler handler) {
    this.context = context;
    this.viewList = viewList;
    this.handler = handler;
  }

  @Override
  public int getCount() {
    return Integer.MAX_VALUE;
  }

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

  @Override
  public Object instantiateItem(ViewGroup container, int position) {
    // 通過控件集合獲取imageView 添加到容器中，并作為key 返回
    ImageView imageView = viewList.get(position % viewList.size());
    imageView.setOnTouchListener(new OnTouchListener() {
      @Override
      public boolean onTouch(View v, MotionEvent event) {
        switch (event.getAction()) {
        // 當按下的時候，停止輪播
        case MotionEvent.ACTION_DOWN:
          // 移除所有的回調(diào)和消息
          handler.removeCallbacksAndMessages(null);
          break;
        // 抬起
        case MotionEvent.ACTION_UP:
          handler.sendEmptyMessageDelayed(0, 2000);
          break;
        // 取消的時候，繼續(xù)開始錄播
        case MotionEvent.ACTION_CANCEL:
          handler.sendEmptyMessageDelayed(0, 2000);
          break;
        default:
          break;
        }
        //觸摸事件不被消費，true 消費該觸摸事件
        return true;
      }
    });
    container.addView(imageView);
    return imageView;
  }

  @Override
  public void destroyItem(ViewGroup container, int position, Object object) {
    // super.destroyItem(container, position, object);
    container.removeView((View) object);
  }
}