Example.java

public class KamusAdapter extends RecyclerView.Adapter<KamusAdapter.KamusHolder>{
 
    private ArrayList<KamusModel> dataKamus;
    private Context context;
    private LayoutInflater mInflater;
 
    public KamusAdapter(Context context, ArrayList<KamusModel> dataKamus){
        this.context = context;
        this.dataKamus = dataKamus;
        mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }
 
    private ArrayList<KamusModel> getKamusModels (){
        return dataKamus;
    }
 
    void setKamusModels(ArrayList<KamusModel> dataKamus){
        this.dataKamus = new ArrayList<>();
        this.dataKamus.addAll(dataKamus);
        notifyDataSetChanged();
    }
 
    public KamusModel getItem(int position){
        return kamusModelList.get(position);
    }
 
    @NonNull
    @Override
    public KamusHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_kata_row, parent, false);
        return new KamusHolder(view);
    }
 
    public void addItem(ArrayList<KamusModel> dataKamus){
        this.dataKamus = dataKamus;
        notifyDataSetChanged();
    }
 
    public void clear() {
        this.dataKamus.clear();
        notifyDataSetChanged();
    }
    @Override
    public void onBindViewHolder(@NonNull KamusHolder kamusHolder, int position) {
        final KamusModel kamusModel = getKamusModels().get(position);
 
        kamusHolder.tvKata.setText(kamusModel.getKata());
      //  kamusHolder.tvArti.setText(kamusModel.getArti());
        kamusHolder.tvKata.setOnClickListener(new CustomOnItemClickListener(position, new CustomOnItemClickListener.OnItemClickCallback() {
            @Override
            public void onItemClicked(View view, int position) {
                MainActivity myActivity = (MainActivity)context;
                Fragment fragment = new FragmentDetail();
                Bundle bundle =new Bundle();
                bundle.putString(FragmentDetail.EXTRA_KATA, kamusModel.getKata());
                bundle.putString(FragmentDetail.EXTRA_ARTI, kamusModel.getArti());
                fragment.setArguments(bundle);
 
                if (fragment != null) {
                    myActivity.getSupportFragmentManager()
                            .beginTransaction()
                            .replace(R.id.content_main, fragment)
                            .addToBackStack(null)
                            .commit();
                }
            }
        }));
    }
 
    @Override
    public int getItemViewType(int position) {
        return 0;
    }
    @Override
    public long getItemId(int position) {
        return position;
    }
 
    @Override
    public int getItemCount() {
        return dataKamus.size();
    }
 
    public static class KamusHolder extends RecyclerView.ViewHolder{
        private TextView tvKata, tvArti;
        public KamusHolder(View itemView){
            super(itemView);
 
            tvKata = (TextView)itemView.findViewById(R.id.txt_kata);
      //      tvArti = (TextView)itemView.findViewById(R.id.txt_arti);
        }
    }
 
    public void filter(String charText){
        charText = charText.toLowerCase(Locale.getDefault());
        dataKamus = new ArrayList<>():
        if (charText.length()==0){
            dataKamus = new ArrayList<>();
        }else {
            for (KamusModel wp : kamusModels){
                if (wp.getKata().toLowerCase(Locale.getDefault()).contains(charText)){
                    dataKamus.add(wp);
                }
            }
        }
        notifyDataSetChanged();
    }
}