该列表将加载所有字符串,并在匹配时显示匹配的项目。但是,我希望该列表仅在输入搜索时才显示,而列表仅包含搜索的项目。如何在打字时仅显示匹配项目的列表视图,而不是一次显示所有项目(不匹配项目)?
package com.example.searchlistview;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONObject;
import android.app.Activity;
import android.os.Bundle;
import android.os.StrictMode;
import android.os.StrictMode.ThreadPolicy;
import android.text.TextUtils;
import android.view.View;
import android.view.Window;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.SearchView;
import android.widget.Toast;
public class MainActivity extends Activity implements SearchView.OnQueryTextListener {
private static final String TAG = "SearchViewFilterMode";
private SearchView mSearchView;
String data,temp,users;
private ListView mListView;
private ArrayAdapter<String> mAdapter;
private final ArrayList<String> mstrings_arr=new ArrayList<String>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().requestFeature(Window.FEATURE_ACTION_BAR);
setContentView(R.layout.activity_main);
mSearchView = (SearchView) findViewById(R.id.search_view);
mListView = (ListView) findViewById(R.id.list_view);
try
{
ThreadPolicy policy = new ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
HttpClient client=new DefaultHttpClient();
HttpPost post=new HttpPost("http://192.162.1.126:1234/www/search_reg_users.php");
HttpResponse res=client.execute(post);
InputStream inp=res.getEntity().getContent();
BufferedReader bf=new BufferedReader(new InputStreamReader(inp));
//since this much code of Buffered reader alone wont get , complete data , therefore , we add the below code
data="";
temp="";
while((temp=bf.readLine())!=null)
{
data=data+temp;
}
JSONArray array=new JSONArray(data);
for(int i=0;i<array.length();i++)
{
JSONObject object=array.getJSONObject(i);
users=object.getString("username");
mstrings_arr.add(users);
Toast.makeText(getApplicationContext(),users+" added to list",Toast.LENGTH_SHORT).show();
}
}
catch(Exception e)
{
e.printStackTrace();
}
mListView.setAdapter(mAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1,
mstrings_arr));
mListView.setTextFilterEnabled(true);
setupSearchView();
}
private void setupSearchView() {
mSearchView.setIconifiedByDefault(false);
mSearchView.setOnQueryTextListener(this);
mSearchView.setSubmitButtonEnabled(false);
mSearchView.setQueryHint(getString(R.string.cheese_hunt_hint));
}
public boolean onQueryTextChange(String newText) {
if (TextUtils.isEmpty(newText)) {
mListView.clearTextFilter();
}
上面的代码后,我试图,设置列表视图的可见性时发现匹配到仅看得到是。它仅适用于一个搜索实例,如果找到匹配项,则返回整个列表。
什么是我希望得到的,如下:
- 在搜索框中
- 输入搜索如果搜索列表中的项目
- 才任何项目相匹配, 列表显示但只有匹配项目
其他{
mListView.setFilterText(newText.toString());
mListView.setVisibility(View.VISIBLE);
}
return true;
}
public boolean onQueryTextSubmit(String query) {
return false;
}
}
提示:在列表中搜索更改数据并通知。 –