// build.gradle(Project:)
allprojects {
    repositories {
        ...
            maven { url 'https://www.jitpack.io' }
    }
}

 private InfiniteScrollAdapter infiniteAdapter;

      itemPicker.setOrientation(DSVOrientation.HORIZONTAL);

       infiniteAdapter = InfiniteScrollAdapter.wrap(new CardAdapter(CardBean.getData()));
       itemPicker.setAdapter(infiniteAdapter);
       itemPicker.setItemTransitionTimeMillis(150);//设置滑动时长
       itemPicker.setItemTransformer(new ScaleTransformer.Builder()
               .setMinScale(0.8f)
               .build());
       itemPicker.addOnItemChangedListener(new HorizontalView.OnItemChangedListener<RecyclerView.ViewHolder>() {
           @Override
           public void onCurrentItemChanged(@Nullable RecyclerView.ViewHolder viewHolder, int position) {
               int positionInDataSet = infiniteAdapter.getRealPosition(position);
               onItemChanged(CardBean.getData().get(positionInDataSet));
           }
       });

scrollView.setOrientation(DSVOrientation o);  //设置视图
scrollView.setOffscreenItems(count); //Reserve extra space equal to (childSize * count) on each side of the view
scrollView.setOverScrollEnabled(enabled); //Can also be set using android:overScrollMode xml attribute

scrollView.getCurrentItem();  //返回当前所选项目的适配器位置；如果适配器为空，则返回-1。
scrollView.scrollToPosition(int position); //初始位置
scrollView.smoothScrollToPosition(int position); //通过动画滚动到指定位置
scrollView.setItemTransitionTimeMillis(int millis); //同股票滚动所需时间


scrollView.setItemTransformer(new ScaleTransformer.Builder()
  .setMaxScale(1.05f)
  .setMinScale(0.8f)
  .setPivotX(Pivot.X.CENTER) // CENTER is a default one
  .setPivotY(Pivot.Y.BOTTOM) // CENTER is a default one
  .build());

scrollView.setSlideOnFling(true);

scrollView.setSlideOnFlingThreshold(value);

InfiniteScrollAdapter wrapper = InfiniteScrollAdapter.wrap(yourAdapter);
scrollView.setAdapter(wrapper);

int getRealItemCount();

int getRealCurrentPosition();

int getRealPosition(int position);

/*
 * 在以下用例中，您可能需要此方法：
 * int targetAdapterPosition = wrapper.getClosestPosition(targetPosition);
 * scrollView.smoothScrollTo(targetAdapterPosition);
 * 滚动数据集以达到目标位置所需的最少数量
 */
int getClosestPosition(int position); 

scrollView.addScrollStateChangeListener(listener);
scrollView.removeScrollStateChangeListener(listener);

public interface ScrollStateChangeListener<T extends ViewHolder> {

  void onScrollStart(T currentItemHolder, int adapterPosition); //滚动时调用
  
  void onScrollEnd(T currentItemHolder, int adapterPosition); //滚动结束时调用
  /**
   * 滚动进行时调用
   * @param scrollPosition是间隔[-1f..1f]内的一个值，它对应于currentSelectedView的位置。
   * In idle state:
   * |view1|  |currentlySelectedView|  |view2|
   * -view1 is on position -1;
   * -currentlySelectedView is on position 0;
   * -view2 is on position 1.
   * @param currentIndex-当前视图的索引
   * @param newIndex-成为新的当前视图的视图的索引
   * @param currentHolder-当前视图的ViewHolder
   * @paramnewCurrent-成为新当前视图的视图的ViewHolder
   */
  void onScroll(float scrollPosition, int currentIndex, int newIndex, @Nullable T currentHolder, @Nullable T newCurrentHolder); 
}

scrollView.addScrollListener(listener);
scrollView.removeScrollListener(listener);

public interface ScrollListener<T extends ViewHolder> {
  //The same as ScrollStateChangeListener, but for the cases when you are interested only in onScroll()
  void onScroll(float scrollPosition, int currentIndex, int newIndex, @Nullable T currentHolder, @Nullable T newCurrentHolder);
}

scrollView.addOnItemChangedListener(listener);
scrollView.removeOnItemChangedListener(listener);

public interface OnItemChangedListener<T extends ViewHolder> {
  /**
    *如果数据集为空，viewHolder将为null
   */
  void onCurrentItemChanged(@Nullable T viewHolder, int adapterPosition); 
}