RecyclerView (a)

RecyclerView mRvMain;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_linear_recycler_view);
    mRvMain= findViewById(R.id.rv_main);
    LinearLayoutManager manager =  new LinearLayoutManager(LinearRecyclerViewActivity.this);
    mRvMain.setLayoutManager(manager);
    mRvMain.setAdapter(new LinearAdapter());
}

Two Adapter

public  class LinearAdapter the extends RecyclerView.Adapter < LinearAdapter.LinearViewHolder > {// This is the holder behind their definition 
    @NonNull 
    @Override 
    // because the return value is RecyclerView.ViewHolder ( because LinearViewHolder ViewHolder subclass, it is used directly linearviewholder ) we should a new ViewHolder as the return value, because it is not a new class of all LinearViewHolder, and creates an object 
    public  LinearAdapter.LinearViewHolder onCreateViewHolder (@NonNull the ViewGroup parent, int viewType) { 

            View View = LayoutInflater.from (parent.getContext ()). the inflate (R.layout.layout_linear_item, parent, to false );
             return  new new LinearViewHolder (view); // LinearViewHolder class constructor requires a view object must pass View objects, and so the use of pump displayed item, inflate to convert the XML document into a View object 
    } 

    @Override 
    public  void onBindViewHolder ( LinearAdapter.LinearViewHolder Holder , int position) { 
        holder.mtv.setText ( "Hello" + position); 
    } 

    @Override 
    public  int getItemCount () {
         return 20 is ; 
    } //////// own definition Holder ////// /////
     


class  LinearViewHolder  the extends RecyclerView.ViewHolder 
    { 

        PrivateMTV the TextView;
         public LinearViewHolder (@NonNull View ItemView) {    // ItemView value is the value at the beginning of the outgoing onCreateViewHolder 
            Super (ItemView); 
            MTV = itemView.findViewById (R.id.tv_tile); 
        } 
    } 
}