详解android视频图片混合轮播实现

for (int i = 0 ;i imgUrl = new ArrayList<>();
        int position = 0;
        for (int j = 0 ;j

public class BannerAdapter extends PagerAdapter {

  private List viewList;
  private int size;
  private final int cacheCount = 3;

  public BannerAdapter(List viewList) {
    this.viewList = viewList;
    size = viewList.size();
  }

  @Override
  public void destroyItem(ViewGroup container, int position, Object object) {
    if (viewList.size() > cacheCount){
      container.removeView(viewList.get(position%size));
    }
  }

  @Override
  public Object instantiateItem(ViewGroup container, int position) {
    ViewGroup parent = (ViewGroup) viewList.get(position%size).getParent();
    if (parent != null) {
      parent.removeView(viewList.get(position%size));
    }
    container.addView(viewList.get(position%size));
    return viewList.get(position%size);
  }

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

  @Override
  public boolean isViewFromObject(View view, Object object) {
    return view == object;
  }