SearchView与自定义ListView和自定义适配器

Question

我想使用SearchView小部件来过滤数据。 过滤器不起作用，因为我切换到Listview的自定义布局。 ListView被我所有的歌曲填充，但是当某些东西被输入到SearchView中时，它不会更新。我只想让SearchView在Custom ListView中工作。如果你有任何有用的链接，请与我分享。

搜索类别：

import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.widget.ListView; 
import android.widget.SearchView; 
import java.util.ArrayList; 
import univie.g02.t06.tmsd.dummydata.DummyAPIData; 
import univie.g02.t06.tmsd.dummydata.DummySong; 
import univie.g02.t06.tmsd.MyAdapter; 

public class Search extends AppCompatActivity { 

    ListView listV; 
    ArrayList<String> listItems = new ArrayList<String>(); 
    ArrayList<String> titles = new ArrayList<String>(); 
    ArrayList<DummySong> listSongs = new ArrayList<DummySong>(); 
    MyAdapter adapter; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_search); 
     listV = (ListView) findViewById(R.id.list_view); 
     SearchView searchView = (SearchView) findViewById(R.id.search_view); 

     listSongs = DummyAPIData.getAllDummySongs(); 
     for (int i = 0; i < listSongs.size(); i++) { 
      listItems.add(listSongs.get(i).getDummyArtistTitle()); 
      titles.add(listSongs.get(i).getDummyTitle()); 
     } 
     adapter = new MyAdapter(this, 
       android.R.layout.simple_list_item_1, 
       listItems); 
     listV.setAdapter(adapter); 

     searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() { 

      @Override 
      public boolean onQueryTextChange(String query) { 

       adapter.getFilter().filter(query); 
       listV.setAdapter(adapter); 

       return true; 

      } 

      @Override 
      public boolean onQueryTextSubmit(String query){ 

       return true; 
      } 

     }); 
    } 

} 

MyAdapter类：

import android.content.Context; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ArrayAdapter; 
import android.widget.Button; 
import android.widget.Filterable; 
import android.widget.TextView; 

import java.util.ArrayList; 
import java.util.List; 


public class MyAdapter extends ArrayAdapter implements Filterable { 
    private List<String> list; 
    ArrayList<String> origData = new ArrayList<String>(); 
    private Context context; 


    public MyAdapter(Context context, int resources, ArrayList<String> list) { 
     super(context, resources, list); 
     this.list = list; 
     this.context = context; 
     this.origData = list; 
    } 

    @Override 
    public int getCount() { 
     return list.size(); 
    } 

    @Override 
    public Object getItem(int pos) { 
     return list.get(pos); 
    } 

    @Override 
    public long getItemId(int pos) { 
     return 0; 
     //just return 0 if your list items do not have an Id variable. 
    } 

    @Override 
    public View getView(final int position, View convertView, ViewGroup parent) { 
     View view = convertView; 
     if (view == null) { 
      LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      view = inflater.inflate(R.layout.customlayout, null); 
     } 

     //Handle TextView and display string from your list 
     TextView listItemText = (TextView)view.findViewById(R.id.list_item_string); 
     listItemText.setText(list.get(position)); 

     //Handle buttons and add onClickListeners 
     Button deleteBtn = (Button)view.findViewById(R.id.delete_btn); 

     deleteBtn.setOnClickListener(new View.OnClickListener(){ 
      @Override 
      public void onClick(View v) { 
       //do something 
       list.remove(position); //or some other task 
       notifyDataSetChanged(); 
      } 
     }); 

     return view; 
    } 
} 

customlayout.xml：

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" android:layout_height="match_parent"> 

    <TextView 
     android:id="@+id/list_item_string" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_centerVertical="true" 
     android:layout_alignParentLeft="true" 
     android:paddingLeft="8dp" 
     android:textSize="18sp" /> 

    <Button 
     android:id="@+id/delete_btn" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentRight="true" 
     android:layout_centerVertical="true" 
     android:layout_marginRight="5dp" 
     android:text="add" /> 
</RelativeLayout> 

activitysearch.xml：

<?xml version="1.0" encoding="utf-8"?> 
<android.support.constraint.ConstraintLayout 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context="univie.g02.t06.tmsd.Search"> 

    <RelativeLayout 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:orientation="horizontal"> 

     <SearchView 
      android:id="@+id/search_view" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:clickable="true" /> 

     <ListView 
      android:id="@+id/list_view" 
      android:layout_width="fill_parent" 
      android:layout_height="wrap_content" 
      android:layout_alignParentEnd="true" 
      android:layout_alignParentStart="true" 
      android:layout_below="@+id/search_view" /> 

    </RelativeLayout> 
</android.support.constraint.ConstraintLayout> 

Answer 1

SearchView searchView =(SearchView) findViewById(R.id.searchView); 
    searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() { 
     @Override 
     public boolean onQueryTextSubmit(String s) { 
      adapterQuote.getFilter().filter(s); 
      listView.setAdapter(adapterQuote); 
      return true; 
     } 

     @Override 
     public boolean onQueryTextChange(String s) { 
      adapterQuote.getFilter().filter(s); 
      return false; 
     } 
    });