expandablerecyclerview

问题 I am using this library to make a expandable RecyclerView I made my own version of it so I can define the header but It's giving me I think I made something wrong because It's giving me this error. What I want is: a way to make my own header layout. Is there a way to populate the adapter of the RecyclerView so that I don't have to create a new adapter file every time I want to implement the RecyclerView. How to set my one item or more to be expanded as I open the activity. My version of

问题 Recycler view contains two textfields in each row. When we click on one textview it expands an expandable layout.This expandable layout duplicates on scrolling. Here is my adaptor class public class AlbumsAdapter extends RecyclerView.Adapter<AlbumsAdapter.MyViewHolder> { private Context mContext; private List<Album> albumList; RecyclerView rv; public class MyViewHolder extends RecyclerView.ViewHolder { public TextView title, count; public ImageView thumbnail, overflow;