Android PagerAdapter 不刷新、未刷新，索引超出、视图重叠问题解决

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1、第一个问题，一开始调用 notifyDataSetChanged 视图没有刷新，
查资料说是要重写 getItemPosition return POSITION_NONE。

2、第二个问题 destroyItem 方法销毁时候的代码一开始写成

     View view = mList.get(position);
        container.removeView(view);

会出现索引超出或者视图重叠等问题，于是改成

 View view = (View) object;
            container.removeView(view);

详见：

public class BasePagerAdapter<T extends View> extends PagerAdapter {
    private List<T> mList = new ArrayList<>();

    @Override
    public int getItemPosition(@NonNull Object object) {
        //解决无法刷新的问题
//        return super.getItemPosition(object);
        return POSITION_NONE;
    }

    @Override
    public int getCount() {
        return mList.size();
    }

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

    @NonNull
    @Override
    public Object instantiateItem(@NonNull ViewGroup container, int position) {
//        return super.instantiateItem(container, position);
        View view = mList.get(position);
        container.addView(view);
        return view;
    }

    @Override
    public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
//        super.destroyItem(container, position, object);
       /* refreshData时候 有 bug，mList变动了，destroyItem 异步运行，导致部分视图无法 remove 掉
        View view = mList.get(position);
        container.removeView(view);*/
        if (object instanceof View) {
            View view = (View) object;
            container.removeView(view);
        }
    }


    public void refreshData(List<T> dataList) {
        mList.clear();
        mList.addAll(dataList);
        notifyDataSetChanged();
    }


    public void addDataList(List<T> dataList) {
        mList.addAll(dataList);
        notifyDataSetChanged();
    }

  
    public void addData(T data) {
        mList.add(data);
        notifyDataSetChanged();
    }
}