Android滚动条广告实现代码示例

setInAnimation(Animation inAnimation)
setOutAnimation(Animation outAnimation)

setFactory(ViewFactory factory)

  /* 给viewSwitch添加显示的view，可以自由设置 外部调用   
  * @param layoutId  
  */ 
 public void addView(final int layoutId){   
   setFactory(new ViewFactory(){    
    @Override    
    public View makeView() {      
        return LayoutInflater.from(getContext()).inflate(layoutId,null);   
    }  
  }); 
  }

/**
 * 自由设置view的viewSwitcher
 * Created by Administrator on 2017/5/13.
 */
public class CarouselView extends ViewSwitcher {

  private int mCutItem;
  private int loopTime;//循环时间
  private MyHandler myHandler;
  private ArrayList listString;

  public CarouselView(Context context) {
    this(context, null);
  }

  public CarouselView(Context context, AttributeSet attrs) {
    super(context, attrs);
    initData();
    initAnimation();
  }

  /**
   * 初始化一些变量
   */
  private void initData(){
    listString = new ArrayList<>();
    myHandler = new MyHandler(this);
  }

  /**
   * 给viewSwitch添加显示的view，可以自由设置，外部调用
   * @param layoutId 自定义view的布局id
   */
  public void addView(final int layoutId){
    setFactory(new ViewFactory(){
      @Override
      public View makeView() {
        return LayoutInflater.from(getContext()).inflate(layoutId,null);
      }
    });
  }

  /**
   * 初始化进入和出去动画
   */
  private void initAnimation(){
    setInAnimation(AnimationUtils.loadAnimation(getContext(),R.anim.translate_in));
    setOutAnimation(AnimationUtils.loadAnimation(getContext(), R.anim.translate_out));
  }

  /**
   * 设置数据源并展示view，外部调用
   * @param mList
   * @param time
   */
  public void upDataListAndView(ArrayList mList,int time){
     mCutItem = 0;
    loopTime = time;
    if (null == mList) {
      return;
    }
    listString.clear();
    listString.addAll(mList);
    updataView(mList.get(0),getCurrentView(),mCutItem);
  }

  /**
   *展示下一条广告
   */
  public void showNextView() {
    if (null == listString || listString.size() <2) {
     return;
    }
    mCutItem = mCutItem == listString.size() - 1 &＃63; 0 : mCutItem + 1;
    updataView(listString.get(mCutItem), getNextView(),mCutItem);
    showNext();
  }

  /**
   * 启动轮播
   */
  public void startLooping() {
    if (null == listString || listString.size() <2 ) {
      return;
    }
    myHandler.removeMessages(0);
    myHandler.sendEmptyMessageDelayed(0, loopTime);
  }

  /**
   * 停止轮播
   */
  public void stopLooping(){
    myHandler.removeMessages(0);
  }

  /**
   * 在当前view上设置数据
   * @param text
   * @param view
   */
  private void updataView(String text,View view, final int mCutItem){
    TextView textView = (TextView) view.findViewById(R.id.tv_carouse_text);
    textView.setText(text);
    textView.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        if (null != onClickItemListener) {
          onClickItemListener.onClick(mCutItem);
        }
        //Toast.makeText(getContext(), "你点击了第" + position + "条广告", Toast.LENGTH_SHORT).show();
      }
    });
  }

  /**
   * @description 主线程Handler
   * @note 因为存在定时任务，并且TextSwitcherView持有Activity的引用
   * 所以这里采用弱引用，主要针对内存回收的时候Activity泄露
   **/
  private static class MyHandler extends Handler {

    private WeakReference mRef;
    public MyHandler(CarouselView view){
      mRef = new WeakReference(view);
    }
    @Override
    public void handleMessage(Message msg) {
      super.handleMessage(msg);
      CarouselView mView = this.mRef.get();
      mView.showNextView();//展示下一条广告，会调用shownext方法展示下一条广告
      mView.startLooping();//启动轮播，间隔后展示下一条
    }
  }

  OnClickItemListener onClickItemListener;

  /**
   * 定义一个接口回调，响应广告点击
   */
  interface OnClickItemListener{
    void onClick(int position);
  }

  public void setOnClickListener(OnClickItemListener onClickListener){
    this.OnClickItemListener= onClickListener;
  }
}

  carouselView.addView(R.layout.itemview);  
  carouselView.upDataListAndView(mList, 3000); 
  carouselView.setOnClickListener(new CarouselView.OnClickItemListener() {    
    @Override     
    public void onClick(int position) {    
     Toast.makeText(mContext, "你点击了第" + position + "条广告",Toast.LENGTH_SHORT).show();   
   }  
  });

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