[ANDROID] RealmRecyclerViewAdapter에서 필터링 구현하는 방법

RealmRecyclerViewAdapter에서 필터링 구현하는 방법

해결법

1. ---

   1.publishResults에 필터링을 이동하고 새로운 결과를 평가하기 위해 UI 스레드 영역의 쿼리를 사용합니다.

   publishResults에 필터링을 이동하고 새로운 결과를 평가하기 위해 UI 스레드 영역의 쿼리를 사용합니다.

   private class AirportAdapter
           extends RealmRecyclerViewAdapter<AirportR, RecyclerView.ViewHolder>
           implements Filterable {
       Realm realm;
   
       public AirportAdapter(Context context, Realm realm, OrderedRealmCollection<AirportR> airports) {
           super(context, airports, true);
           this.realm = realm;
       }
   
       @Override
       public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
           View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.airport_show, parent, false);
           AirportClass holder = new AirportClass(view);
           return holder;
       }
   
       @Override
       public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
           AirportR airportR = getData().get(position);
   
           AirportClass mHolder = (AirportClass) holder;
           mHolder.bind(airportR);
       }
   
       public void filterResults(String text) {
           text = text == null ? null : text.toLowerCase().trim();
           RealmQuery<AirportR> query = realm.where(AirportR.class);
           if(!(text == null || "".equals(text))) {
               query.contains("fieldToQueryBy", text, Case.INSENSITIVE) // TODO: change field
           }
           updateData(query.findAllAsync());
       }
   
       public Filter getFilter() {
           AirportFilter filter = new AirportFilter(this);
           return filter;
       }
   
       private class AirportFilter
               extends Filter {
           private final AirportAdapter adapter;
   
           private AirportFilter(AirportAdapter adapter) {
               super();
               this.adapter = adapter;
           }
   
           @Override
           protected FilterResults performFiltering(CharSequence constraint) {
               return new FilterResults();
           }
   
           @Override
           protected void publishResults(CharSequence constraint, FilterResults results) {
               adapter.filterResults(constraint.toString());
           }
       }
   
       private class AirportClass
               extends RecyclerView.ViewHolder {
           TextView name, country;
           ImageView image;
   
           public AirportClass(View itemView) {
               super(itemView);
   
               name = (TextView) itemView.findViewById(R.id.name);
               country = (TextView) itemView.findViewById(R.id.country);
               image = (ImageView) itemView.findViewById(R.id.imageView);
           }
   
           public void bind(AirportR airportR) {            
               country.setText(airportR.getIsoCountry());
               name.setText(airportR.getName());
           }
       }
   }
   

2. ---

   2.어댑터가이 추가에 당신을 도울 수 있습니다

   어댑터가이 추가에 당신을 도울 수 있습니다

   fun filterResults(text: String?, realm: Realm) {
       var text = text
       text = text?.toLowerCase()?.trim { it <= ' ' }
       val query = realm.where(YourObject::class.java)
       if (!(text == null || "" == text)) {
           query.contains("username", text, Case.INSENSITIVE).or().contains("username2", text, Case.INSENSITIVE)
       }
       updateData(query.findAllAsync()) // or findAll()
   }
   

from https://stackoverflow.com/questions/40630322/how-to-implement-filterable-in-realmrecyclerviewadapter by cc-by-sa and MIT license