Problem with RecyclerView on Android

I am trying to implement a list with a RecyclerView whose adapter is powered by a cursor. I do not understand why when executing the app, the list shows only the first element although in the table of the database I have 7 records. I checked everything I could and the only thing I found was that in the layout of the item the TextView had the property layout_height="match_parent" and I changed it to wrap_content but the behavior did not change. Any comment will be welcome. Thanks.

RecyclerView XML

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    >
    <android.support.v7.widget.RecyclerView
        android:id="@+id/lista"
        android:scrollbars="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior"
        />

</LinearLayout>

XML of the Item

<TextView
    android:textSize="30sp"
    android:id="@+id/title"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Hola mundo"
    android:padding="10dp"
    android:textColor="@color/black"
    />

<TextView
    android:textSize="30sp"
    android:id="@+id/listanombre"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:visibility="gone"
    android:padding="10dp"
    />

<View style="@style/Divider"/>

Adapter

public class ListaAdapter extends RecyclerView.Adapter<ListaAdapter.ViewHolder>{

    Context myContext;
    CursorAdapter myCursorAdapter;

    public ListaAdapter(Context context, Cursor cursor){
        myContext=context;

        myCursorAdapter = new CursorAdapter(myContext,cursor,0) {
            @Override
            public View newView(Context context, Cursor cursor, ViewGroup parent) {
                LayoutInflater inflater = LayoutInflater.from(parent.getContext());
                View retView = inflater.inflate(R.layout.item,parent,false);
                return retView;
            }

            @Override
            public void bindView(View view, Context context, Cursor cursor) {
                TextView textView  = (TextView) view.findViewById(R.id.title);
                TextView listanombre = (TextView) view.findViewById(R.id.listanombre);
                textView.setText(cursor.getString(cursor.getColumnIndex(cursor.getColumnName(1))));
                listanombre.setText(cursor.getString(cursor.getColumnIndex(cursor.getColumnName(2))));
            }
        };
    }


    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.item,parent,false);
        ViewHolder viewHolder = new ViewHolder(view);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        myCursorAdapter.getCursor().moveToPosition(position);
        myCursorAdapter.bindView(holder.itemView,myContext,myCursorAdapter.getCursor());
    }

    @Override
    public int getItemCount() {
        return myCursorAdapter.getCount();
    }


    public static class  ViewHolder extends RecyclerView.ViewHolder{
        public TextView textView,listanombre;

        public ViewHolder(View itemView) {
            super(itemView);
            textView = (TextView) itemView.findViewById(R.id.title);
            listanombre = (TextView)itemView.findViewById(R.id.listanombre);
        }
    } 
}