RecycleView刷新数据时保持焦点不变

Posted 2022-08-26 peak wang

1. adapter重写getItemId方法;

    @Override
    public long getItemId(int position) 
        return position;
    

2. adapter执行setHasStableIds(true);

mListAdapter.setHasStableIds(true);

3. 新增set数据的方法,更新数据时调用此方法,并调用notifyDataSetChanged();

    public void resetDatas(List<JsonConfiguration.FeaturedApp> list)
    
        mList = list;
        notifyDataSetChanged();