我已經(jīng)創(chuàng)建了這個(gè)數(shù)據(jù)庫，在此處輸入圖像描述，并希望顯示專門針對(duì)兒童可用性的列表：“可用”項(xiàng)目。通過這段代碼，我?guī)缀踹_(dá)到了目標(biāo)public class Homeuser extends AppCompatActivity {SharedPreferences preferences;SharedPreferences.Editor editor;ListView lv;FirebaseListAdapter adapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_homeuser);    final Vibrator vibeuser = (Vibrator) Homeuser.this.getSystemService(Context.VIBRATOR_SERVICE);    preferences = PreferenceManager.getDefaultSharedPreferences(this);    editor = preferences.edit();    Query query = FirebaseDatabase.getInstance().getReference().child("food");    lv = findViewById(R.id.list_item);    FirebaseListOptions<food> options = new FirebaseListOptions.Builder<food>()            .setLayout(R.layout.list_items).setLifecycleOwner(Homeuser.this)            .setQuery(query,food.class).build();    adapter = new FirebaseListAdapter(options)    {        @Override        protected void populateView(View v, Object model, int position) {            TextView itemname, itemprice, avail;            itemname = v.findViewById(R.id.itemname);            itemprice = v.findViewById(R.id.itemprice);            avail = v.findViewById(R.id.avail);            food itemFood = (food) model;            if(itemFood.getAvailability().toString().equals("Available")){            itemname.setText(itemFood.getFooditemname().toString());            itemprice.setText(itemFood.getFooditemprice().toString());            avail.setText(itemFood.getAvailability().toString());}        }    };}}但是面臨這樣的問題：在此處輸入圖片描述如何擺脫這個(gè)？謝謝。