IllegalStateException错误 about rollviewpager HOT 3 CLOSED

public RollPagerAdapter(RollPagerView viewPager, Context context, List<String> imageList) {
    super(viewPager);
    this.context = context;
    this.imageList = imageList;
}

public void setDate(List<String> imageList) {
    if (this.imageList != null) {
        this.imageList = imageList;
        this.notifyDataSetChanged();
    } else {
        Toast.makeText(context, "加载数据错误", Toast.LENGTH_SHORT).show();
    }
}

@Override
public View getView(ViewGroup container, int position) {
    View view = View.inflate(context, R.layout.item_rollviewpager, null);
    Holder holder = new Holder();
    holder.rollPagerView_sim = (SimpleDraweeView) view.findViewById(R.id.rollPagerView_sim);
    holder.rollPagerView_sim.setImageURI(imageList.get(position));
    return view;
}

@Override
public int getRealCount() {
    return imageList.size();
}

private class Holder {
    SimpleDraweeView rollPagerView_sim;
}