How to implement getFilter on a BaseAdapter?

Question

I am trying to implement a getFilter() on a base adapter to filter out search results on a List. Is there any example of how to implement a getFilter()?

MainActivity

Answer 1

in your adapter put this class to use it in getfilter method

//this is a simple class that filtering the ArrayList of strings used in adapter

public class filter_here extends Filter{

        @Override
        protected FilterResults performFiltering(CharSequence constraint) {
            // TODO Auto-generated method stub

            FilterResults Result = new FilterResults();
            // if constraint is empty return the original names
            if(constraint.length() == 0 ){
                Result.values = Original_Names;
                Result.count = Original_Names.size();
                return Result;
            }

            ArrayList Filtered_Names = new ArrayList();
            String filterString = constraint.toString().toLowerCase();
            String filterableString;

            for(int i = 0; i) results.values;
            notifyDataSetChanged();
        }

    }

return instance from it in getfilter

@Override
    public Filter getFilter() {
        // TODO Auto-generated method stub
        return filter;
    }

full example