我试图隐藏ListView，直到在SearchView中输入字符串为止。

我对Java还是很陌生，但是我尝试了文本侦听器，甚至使用on click方法妥协，但是我似乎无法使其正常工作。

package com.example.searchfunction;

    import androidx.appcompat.app.AppCompatactivity;
    import android.os.Bundle;
    import android.widget.ListView;
    import android.widget.SearchView;
    import java.util.ArrayList;
    import android.os.Bundle;

public class Mainactivity extends AppCompatactivity implements SearchView.OnQueryTextListener {

    // Declare Variables
    ListView list;
    ListViewAdapter adapter;
    SearchView editsearch;
    String[] animalNameList;
    ArrayList<AnimalNames> arraylist = new ArrayList<AnimalNames>();

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Generate sample data
        animalNameList = new String[]{"Lion","Tiger","Dog","Cat","Tortoise","Rat","Elephant","Fox","Cow","Donkey","Monkey"};

        // Locate the ListView in listview_main.xml
        list = findViewById(R.id.listview);

        for (int i = 0; i < animalNameList.length; i++) {
            AnimalNames animalNames = new AnimalNames(animalNameList[i]);
            // Binds all strings into an array
            arraylist.add(animalNames);
        }

        // Pass results to ListViewAdapter Class
        adapter = new ListViewAdapter(this,arraylist);

        // Binds the Adapter to the ListView
        list.setadapter(adapter);

        // Locate the EditText in listview_main.xml
        editsearch = (SearchView) findViewById(R.id.search);
        editsearch.setOnQueryTextListener(this);
    }

    @Override
    public boolean onQueryTextSubmit(String query) {

        return false;
    }

    @Override
    public boolean onQueryTextChange(String newText) {
        String text = newText;
        adapter.filter(text);
        return false;
    }
}