如何添加搜索？

Question

如何在我的 Android 应用中添加搜索功能？我有一个列表视图，我想在其中添加搜索功能。我有代码，但我不知道如何将它与我的应用程序正确集成。代码如下：

private ListView listView;
List<Dog> dogs = new ArrayList<>();
int dataSize;
String[]breed;
public Dog listDog = new Dog();
private SearchView searchView;
ArrayAdapter<String>adapter = null;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    searchView = (SearchView)findViewById(R.id.search);
    initInstances();
    setupSearchView();
}

private void initInstances() {

    prepareData();

    ListAdapter adapter = new ListAdapter(MainActivity.this, listDog);
    listView = (ListView) findViewById(R.id.list_item);
    listView.setAdapter(adapter);
    listView.setOnItemClickListener(listViewClickListener);
}

private void setupSearchView() {
    searchView.setIconifiedByDefault(false);
    searchView.setOnQueryTextListener(this);
    searchView.setSubmitButtonEnabled(true);
    searchView.setQueryHint("Искать кота");
}

private void prepareData() {

    int resId[] = {R.drawable.german_shepherd, R.drawable.labrador_retriever, R.drawable.blue_dog, R.drawable.beagle
            , R.drawable.boxer, R.drawable.golden_retriever, R.drawable.poodle, R.drawable.pug, R.drawable.siberian_husky,
            R.drawable.great_dane, R.drawable.german_shepherd, R.drawable.labrador_retriever, R.drawable.blue_dog, R.drawable.beagle
            , R.drawable.boxer, R.drawable.golden_retriever, R.drawable.poodle, R.drawable.pug, R.drawable.siberian_husky,
            R.drawable.great_dane, R.drawable.german_shepherd, R.drawable.labrador_retriever, R.drawable.blue_dog, R.drawable.beagle
            , R.drawable.boxer, R.drawable.golden_retriever, R.drawable.poodle, R.drawable.pug, R.drawable.siberian_husky,
            R.drawable.great_dane, R.drawable.german_shepherd, R.drawable.labrador_retriever, R.drawable.blue_dog, R.drawable.beagle
            , R.drawable.boxer, R.drawable.golden_retriever, R.drawable.poodle, R.drawable.pug, R.drawable.siberian_husky,
            R.drawable.great_dane};

    breed = new String [] {"German shepherd", "Labrador retriever", "Bull dog", "Beagle",
            "Boxer", "Golden retriever", "Poodle", "Pug", "Siberian husky",
            "Great dane", "German shepherd", "Labrador retriever", "Bull dog", "Beagle",
            "Boxer", "Golden retriever", "Poodle", "Pug", "Siberian husky",
            "Great dane", "German shepherd", "Labrador retriever", "Bull dog", "Beagle",
            "Boxer", "Golden retriever", "Poodle", "Pug", "Siberian husky",
            "Great dane", "German shepherd", "Labrador retriever", "Bull dog", "Beagle",
            "Boxer", "Golden retriever", "Poodle", "Pug", "Siberian husky",
            "Great dane"};


    String description[] = {getString(R.string.Юлмарт), getString(R.string.ЮлияСадовая), getString(R.string.Ювелирныймагазин585), getString(R.string.Альфа)
            , getString(R.string.Электромонтаж), getString(R.string.АгрокомплексКарла93), getString(R.string.АгрокомплексКарла363), getString(R.string.ДобрыеСемена), getString(R.string.АгрокомплексКрасная93)
            , getString(R.string.Глобус), getString(R.string.ПланетаДетства), getString(R.string.АгрокомплексКрасная152), getString(R.string.Золушка), getString(R.string.Офискласс118)
            , getString(R.string.СалонцветовLadyFlower), getString(R.string.ДекорЮг), getString(R.string.Глобус), getString(R.string.АгрокомплексКрасная25), getString(R.string.ОфисКласс106)
            , getString(R.string.ПятёрочкаБувальцева26), getString(R.string.БаронДиваноффКрасная1), getString(R.string.Рынок), getString(R.string.Новинтех), getString(R.string.ГлорияДжинс)
            , getString(R.string.ЦифровойсупермаркетDNS), getString(R.string.Евроремонт), getString(R.string.Гейзер), getString(R.string.Нива), getString(R.string.ДвериАдамКомунистическая20)
            , getString(R.string.ЦветыДоставка), getString(R.string.БытКубани), getString(R.string.РынокКореновскоеРАЙПО), getString(R.string.Золушка), getString(R.string.ДинскиеКолбасы)
            , getString(R.string.Цветы), getString(R.string.Тимур), getString(R.string.АгрокомплексКомунистическая20), getString(R.string.АгрокомплексКарла363), getString(R.string.МебельныймагазинРз59)
            , getString(R.string.Изумруд),};
    dataSize = resId.length;
    adapter = new ArrayAdapter<String>(this, R.layout.list_item,breed);

    Log.d("khem", "dataSize " + resId.length);
    Log.d("khem", "breed " + resId.length);
    Log.d("khem", "description " + resId.length);



    for (int i = 0; i < dataSize; i++) {
        Log.d("khem", " " + i);
        Dog dog = new Dog(resId[i], breed[i], description[i]);
        dogs.add(dog);
    }

    listDog.setDogs(dogs);

    //Log.d("khem",listDog);
}

public boolean onQueryTextSubmit(String query) {
    return false;
}


public boolean onQueryTextChange(String newText) {
    if (TextUtils.isEmpty(newText)) {
        listView.clearTextFilter();
    } else {
        listView.setFilterText(newText.toString());
    }
    return true;
}

/*************************
 * Listener
 ***************************/

AdapterView.OnItemClickListener listViewClickListener = new AdapterView.OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        Toast.makeText(MainActivity.this, "POSITION:= " + position,
                Toast.LENGTH_SHORT).show();

        Intent intent = new Intent(MainActivity.this,ShowDetailActivity.class);
        intent.putExtra("resId",listDog.getDogs().get(position).getResId());
        intent.putExtra("breed",listDog.getDogs().get(position).getBreed());
        intent.putExtra("desc",listDog.getDogs().get(position).getDescription());

        startActivity(intent);
    }

};
}

Answer 1

1- 将 ListAdapter 更改为 SimpleAdapter

2- 使适配器成为全局变量，

那么你可以使用getFilter方法

注意：我从 editText 获取我想要在数组中搜索的单词，并在使用 TextChanged 侦听器编写单词时执行搜索

EditText grabResults;
grabResults.addTextChangedListener(new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {


                adapter.getFilter().filter(s);

        }

        @Override
        public void afterTextChanged(Editable s) {

        }
    });   

你可以放在任何你想要的地方:)

adapter.getFilter().filter(s);