Android 带有自定义ListView和自定义适配器的SearchView
我想使用SearchView小部件来过滤数据。 自从我切换到Listview的自定义布局后,筛选就不起作用了。ListView中充满了我拥有的所有歌曲,但当在SearchView中键入内容时不会更新。我只想让SearchView为自定义ListView工作。如果你有任何有用的链接,请与我分享 搜索类别:Android 带有自定义ListView和自定义适配器的SearchView,android,listview,android-adapter,searchview,Android,Listview,Android Adapter,Searchview,我想使用SearchView小部件来过滤数据。 自从我切换到Listview的自定义布局后,筛选就不起作用了。ListView中充满了我拥有的所有歌曲,但当在SearchView中键入内容时不会更新。我只想让SearchView为自定义ListView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.
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;
}
});
}
}
导入android.support.v7.app.app活动;
导入android.os.Bundle;
导入android.widget.ListView;
导入android.widget.SearchView;
导入java.util.ArrayList;
导入univie.g02.t06.tmsd.dummydata.DummyAPIData;
导入univie.g02.t06.tmsd.dummydata.DummySong;
导入univie.g02.t06.tmsd.MyAdapter;
公共类搜索扩展了AppCompatActivity{
ListView-listV;
ArrayList listItems=新的ArrayList();
ArrayList titles=新的ArrayList();
ArrayList listSongs=新的ArrayList();
MyAdapter适配器;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity\u search);
listV=(ListView)findViewById(R.id.list\u视图);
SearchView SearchView=(SearchView)findViewById(R.id.search\u视图);
listSongs=DummyAPIData.getAllDummySongs();
对于(int i=0;i
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;
}
}
导入android.content.Context;
导入android.view.LayoutInflater;
导入android.view.view;
导入android.view.ViewGroup;
导入android.widget.ArrayAdapter;
导入android.widget.Button;
导入android.widget.Filterable;
导入android.widget.TextView;
导入java.util.ArrayList;
导入java.util.List;
公共类MyAdapter扩展ArrayAdapter实现可过滤{
私人名单;
ArrayList origData=新的ArrayList();
私人语境;
公共MyAdapter(上下文上下文、int资源、ArrayList列表){
超级(上下文、资源、列表);
this.list=列表;
this.context=上下文;
this.origData=列表;
}
@凌驾
public int getCount(){
返回list.size();
}
@凌驾
公共对象getItem(int-pos){
返回列表。获取(pos);
}
@凌驾
公共长getItemId(int-pos){
返回0;
//如果列表项没有Id变量,只需返回0。
}
@凌驾
公共视图getView(最终整数位置、视图转换视图、视图组父视图){
视图=转换视图;
如果(视图==null){
LayoutFlater充气器=(LayoutFlater)context.getSystemService(context.LAYOUT\u充气器\u服务);
视图=充气机。充气(R.layout.customlayout,null);
}
//处理列表中的文本视图和显示字符串
TextView listItemText=(TextView)view.findViewById(R.id.list\u item\u string);
listItemText.setText(list.get(position));
//处理按钮并添加onClickListeners
Button deleteBtn=(Button)view.findviewbyd(R.id.delete_btn);
deleteBtn.setOnClickListener(新视图.OnClickListener(){
@凌驾
公共void onClick(视图v){
//做点什么
list.remove(position);//或其他任务
notifyDataSetChanged();
}
});
返回视图;
}
}
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>
不幸的是,SearchView不支持CursorAdapter以外的任何适配器。我建议您创建一个自定义布局和加载,以获得相同的结果。不鼓励只使用代码的答案,因为它们不会为未来的读者提供太多信息。请对您所写的内容提供一些解释。我认为这足以解决此问题。通过某种方式,您可以创建一个带有按钮的EditText,该按钮用于从EditText中搜索和获取文本,并使用list.getyourStringValue.contain(“字符串”)显示它
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;
}
});