开始（我稍后会解释这个问题）这是我的代码：
在我的MainActivity中，我有一个listview，这就是我能够搜索它的方式。
MainActivity：
adapter2 = new RelationShipAdapter(MainActivity.this,
usersInfo, usersInfo1);
url = getIntent().getStringExtra("userInfo");
url22 = getIntent().getStringExtra("userInfo22");
urlTwo = getIntent().getStringExtra("userInfoTwo");
sv=(SearchView) findViewById(R.id.search);
Log.d("OkHttpNList", String.valueOf(usersInfo));
sv.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String text) {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean onQueryTextChange(String text) {
Log.d("OkHttpNList", "here.1");
adapter2.getFilter().filter(text);
return false;
}
});
lvRelationShipAllUser = (ListView) findViewById(R.id.lvRelationShip);
lvRelationShipAllUser.setAdapter(adapter2);
setListViewHeightBasedOnChildren(lvRelationShipAllUser);
这是我个人适配器的所有代码：
package com.tag.instagramdemo.example;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import android.util.Log;
import android.widget.Filter;
import android.widget.Filterable;
import android.widget.ListView;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import com.tag.instagramdemo.R;
import com.tag.instagramdemo.lazyload.ImageLoader;
public class RelationShipAdapter extends BaseAdapter implements Filterable {
private InstagramApp mApp;
private ListView lvRelationShipAllUser;
public ArrayList<HashMap<String, String>> usersInfo;
private ArrayList<HashMap<String, String>> usersInfo1;
private List<String> originalData = null;
private ArrayList<HashMap<String, String>> filteredData= null;
private LayoutInflater mInflater;
private ItemFilter mFilter = new ItemFilter();
private LayoutInflater inflater;
private LayoutInflater inflater1;
//lvRelationShipAllUser = (ListView) findViewById(R.id.lvRelationShip);
private ImageLoader imageLoader;
Context context;
public RelationShipAdapter(Context context,
ArrayList<HashMap<String, String>> usersInfo,ArrayList<HashMap<String, String>> usersInfo1) {
inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater1 = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
Log.d("OkHttp","debug4");
this.usersInfo = usersInfo;
this.usersInfo1 = usersInfo1;
getFilter();
this.imageLoader = new ImageLoader(context);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = inflater.inflate(R.layout.relationship_inflater, null);
View view1 = inflater1.inflate(R.layout.relationship_inflater_nothing, null);
Log.d("usersInfo", "ImHere");
Holder holder = new Holder();
//holder.tvFullName1 = (TextView) view1.findViewById(R.id.tvFullName);
holder.ivPhoto = (ImageView) view.findViewById(R.id.ivImage);
holder.tvFullName = (TextView) view.findViewById(R.id.tvFullName);
holder.tvFullName.setText(usersInfo.get(position).get(
Relationship.TAG_USERNAME));
Log.d("tvFullNameTestIng",usersInfo.get(position).get(
Relationship.TAG_USERNAME));
imageLoader.DisplayImage(
usersInfo.get(position).get(Relationship.TAG_PROFILE_PICTURE),
holder.ivPhoto);
return view;
}
@Override
public Filter getFilter() {
Log.d("OkHttpNList", "here");
return mFilter;
}
private class Holder {
private ImageView ivPhoto;
private TextView tvFullName;
private TextView tvFullName1;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return usersInfo.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
private class ItemFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
Log.d("OkHttpNList", "here1");
String filterString = constraint.toString().toLowerCase();
FilterResults results = new FilterResults();
ArrayList<HashMap<String, String>> list = usersInfo;
int count = list.size();
final ArrayList<String> nlist = new ArrayList<>(count);
String filterableString;
Log.d("OkHttpNList", String.valueOf(list));
for (int i = 0; i < count; i++) {
filterableString = list.get(i).get("username");
Log.d("OkHttpNList", String.valueOf(filterableString));
if (filterableString.toLowerCase().contains(filterString)) {
nlist.add(String.valueOf(list.get(i)));
}
}
Log.d("OkHttpNList", String.valueOf(nlist));
results.values = nlist;
return results;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
usersInfo = (ArrayList<HashMap<String, String>>) results.values;
Log.d("OkHttpNList", String.valueOf(usersInfo));
notifyDataSetChanged();
}
}
}
当我使用SearchView来搜索＆＃34;搜索＆＃34;我的列表视图，正如我从
中看到的那样Log.d（＆＃34; OkHttpNList＆＃34;，String.valueOf（usersInfo））;
用户信息正在被更改，一切都应按计划运行，但列表中没有任何变化。
+++++++++++++++++
此外，正如您可以从
中看到的那样Log.d（＆＃34; usersInfo＆＃34;，＆＃34; ImHere＆＃34;）：在getView中
视图getView仅在我点击搜索视图时更新，而不是在我编辑时更新，因此上面的信息无用。
+++++++++++++++++
我想我的问题是为什么我的文字发生变化时我的getView没有更新？
编辑： 如果您需要更多信息，请通知我：）
提前谢谢。 （问题仍然没有解决！）
编辑： 我认为问题是notifyDataSetChanged（）; 没有重置getView！
答案 0 :(得分：1)
这是因为您的适配器的主列表属于HashMap<String, String>>类型，但在您的performFilter中，您要将值添加到类型ArrayList<String>的列表中。
所以为了避免冲突在你的performFilter中使用它： -
ArrayList<HashMap<String, String>> nlist = new ArrayList<>;然后将值添加到此nList。
更新过滤器中的代码如下： -
ArrayList<HashMap<String, String>> nlist = new ArrayList<>;
for (int i = 0; i < count; i++) {
filterableString = list.get(i).get("username");
Log.d("OkHttpNList", String.valueOf(filterableString));
if (filterableString.toLowerCase().contains(filterString)) {
nlist.add(list.get(i));
}
}