在项目中搜索/过滤

字段搜索示例。您在 recyclerview 所在的活动（片段）中使用它

 sv= (SearchView) view.findViewById(R.id.mSearch);

        sv.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String query) {
                return false;
            }
            @Override
            public boolean onQueryTextChange(String query) {
                //FILTER AS YOU TYPE
                mAdapter.getFilter().filter(query);
                return false;
            }
        });

在适配器中我添加了一个变量 CustomFilter filter；和方法

//RETURN FILTER OBJ
public Filter getFilter() {
    if(filter==null)
    {
        filter = new CustomFilter(mHistory,this);
    }
    return filter;
}

以及我在其中过滤数据的类本身。对我来说很优雅

History 通过语言领域，通过方法getLanguage()

 public class CustomFilter extends Filter {
        Adapter adapter;
        ArrayList<History> filterList;
        public CustomFilter(ArrayList<History> filterList,Adapter adapter)
        {
            this.adapter=adapter;
            this.filterList=filterList;
        }
        //FILTERING OCURS
        @Override
        protected FilterResults performFiltering(CharSequence constraint) {
            FilterResults results=new FilterResults();
            //CHECK CONSTRAINT VALIDITY
            if(constraint != null && constraint.length() > 0)
            {
                //CHANGE TO UPPER
                constraint=constraint.toString().toUpperCase();
                //STORE OUR FILTERED PLAYERS
                ArrayList<History> filteredPlayers=new ArrayList<>();
                for (int i=0;i<filterList.size();i++)
                {
                    //CHECK
                    if(filterList.get(i).getLanguage().toUpperCase().contains(constraint))
                    {
                        //ADD HISTORY TO FILTERED PLAYERS
                        filteredPlayers.add(filterList.get(i));
                    }
                }
                results.count=filteredPlayers.size();
                results.values=filteredPlayers;
            }else
            {
                results.count=filterList.size();
                results.values=filterList;
            }
            return results;
        }
        @Override
        protected void publishResults(CharSequence constraint, FilterResults results) {
            adapter.mHistory= (ArrayList<History>) results.values;
            //REFRESH
            adapter.notifyDataSetChanged();
        }



        public ArrayList<History> getFilterList()
        {
            return filterList;
        }
    }

这是它对我的工作方式的结果。也许它会对你派上用场