Search through RecyclerView using Searchview

Question

I want to search through RecyclerView, I have List (BaseOfCards is my getter&setter class) My RecyclerViewAdapter<

Answer 1

I solved my problem

1. Make my class RecyclerViewAdapter implements Filterable

2. Add line private List orig;

3. Add method getFilter in RecyclerViewAdapter

   public Filter getFilter() {
   return new Filter() {
       @Override
       protected FilterResults performFiltering(CharSequence constraint) {
           final FilterResults oReturn = new FilterResults();
           final List results = new ArrayList();
           if (orig == null)
               orig  = items;
               if (constraint != null){
                   if(orig !=null & orig.size()>0 ){
                       for ( final BaseOfCards g :orig) {
                           if (g.getCardName().toLowerCase().contains(constraint.toString()))results.add(g);
                       }
                   }
                   oReturn.values = results;
               }
               return oReturn;
           }
   
   @Override
       protected void publishResults(CharSequence constraint, FilterResults results) {
           items = (ArrayList)results.values;
           notifyDataSetChanged();
   
       }
   }; 
   

4. Make MainActivity implements SearchView.OnQueryTextListener and change method onQueryTextChange :

   @Override
   public boolean onQueryTextChange(String newText) {
       if ( TextUtils.isEmpty ( newText ) ) {
           adapter.getFilter().filter("");
       } else {
           adapter.getFilter().filter(newText.toString());
       }
       return true;
   }