Search through RecyclerView using Searchview

android, android-recyclerview, searchview

Solution

I solved my problem

Make my class RecyclerViewAdapter `implements Filterable`

Add line `private List<BaseOfCards> orig;`

Add method `getFilter` in RecyclerViewAdapter

public Filter getFilter() {
return new Filter() {
    @Override
    protected FilterResults performFiltering(CharSequence constraint) {
        final FilterResults oReturn = new FilterResults();
        final List<BaseOfCards> results = new ArrayList<BaseOfCards>();
        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<BaseOfCards>)results.values;
        notifyDataSetChanged();

    }
};

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;
}

Problem

I want to search through `RecyclerView`, I have `List<BaseOfCards>` (BaseOfCards is my getter&setter class) My RecyclerViewAdapter : ``` public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.MyViewHolder> { private LayoutInflater inflater; private List<BaseOfCards> items; //private int itemLayout; //String cardvalue; private Activity mActivity; public RecyclerViewAdapter(Activity mActivity, Context context, List<BaseOfCards> items) { this.mActivity = mActivity; inflater = LayoutInflater.from(context); this.items = items; //this.itemLayout = itemLayout; } @Override public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { View view = inflater.inflate(R.layout.custom_row, parent, false); MyViewHolder holder = new MyViewHolder(view, mActivity); return holder; } @Override public void onBindViewHolder(MyViewHolder holder, int position) { BaseOfCards item = items.get(position); holder.title.setTag(item); holder.title.setText(item.getCardName()); } @Override public int getItemCount() { return items.size(); } public static class MyViewHolder extends RecyclerView.ViewHolder { private Activity mActivity; TextView title; ImageView titileImageView; public MyViewHolder(View itemView, Activity mActivity) { super(itemView); titileImageView = (ImageView) itemView.findViewById(R.id.image_country); title = (TextView) itemView.findViewById(R.id.listText); this.mActivity = mActivity; } } } ``` I add SearchView to my menu and initialize it in MainActivity: ``` MenuItem menuItem = menu.findItem(R.id.action_search1); searchView = (SearchView) MenuItemCompat.getActionView(menuItem); SearchManager manager = (SearchManager) getSystemService(Context.SEARCH_SERVICE); searchView.setIconifiedByDefault(true); ``` What do I need to do next? Make my RecyclerViewAdapter `implement Filterable` or what? Or just make class `filter` in *RecyclerViewAdapter** and just call it from my MainActivity ?

Original source