How to filter a RecyclerView with a SearchView

Question

I am trying to implement the SearchView from the support library. I want the user to be to use the SearchView to filter a List of movi

Answer 1

All you need to do is to add filter method in RecyclerView.Adapter:

public void filter(String text) {
    items.clear();
    if(text.isEmpty()){
        items.addAll(itemsCopy);
    } else{
        text = text.toLowerCase();
        for(PhoneBookItem item: itemsCopy){
            if(item.name.toLowerCase().contains(text) || item.phone.toLowerCase().contains(text)){
                items.add(item);
            }
        }
    }
    notifyDataSetChanged();
}

itemsCopy is initialized in adapter's constructor like itemsCopy.addAll(items).

If you do so, just call filter from OnQueryTextListener:

searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
    @Override
    public boolean onQueryTextSubmit(String query) {
        adapter.filter(query);
        return true;
    }

    @Override
    public boolean onQueryTextChange(String newText) {
        adapter.filter(newText);
        return true;
    }
});

It's an example from filtering my phonebook by name and phone number.