[英]How to display a listview with only matched items while typing than all (unmatched)items at once?
該列表加載了所有字符串,並且在匹配時顯示匹配的項目。 但是,我希望該列表僅在輸入搜索時顯示,並且該列表僅包含搜索過的項目。
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();
}
在上面的代碼之后,我嘗試將列表視圖的可見性設置為 VISIBILE 僅在找到匹配項時。 它僅適用於一個搜索實例,如果找到匹配項,則返回整個列表。
我希望得到什么,如下:
別的 {
mListView.setFilterText(newText.toString());
mListView.setVisibility(View.VISIBLE);
}
return true;
}
public boolean onQueryTextSubmit(String query) {
return false;
}
}
您需要在這里使用 addTextChangedListener 來解決您的問題。 我做過類似的事情。
addTextChangedListener(new TextWatcher() {
@Override
public void afterTextChanged(Editable s) {
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start,
int before, int count) {
if (s.length() != 0) {
}
}
});
AutoCompleteTextView 達到了目的,最后
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.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONObject;
import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.os.StrictMode;
import android.os.StrictMode.ThreadPolicy;
import android.text.Layout;
import android.text.TextUtils;
import android.view.View;
import android.view.Window;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.ListView;
import android.widget.SearchView;
import android.widget.Toast;
//public class MainActivity extends Activity implements SearchView.OnQueryTextListener {
public class MainActivity extends Activity{
private static final String TAG = "SearchViewFilterMode";
private SearchView mSearchView;
String data,temp,users;
private ListView mListView;
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);
ArrayAdapter<String> mAdapter=new ArrayAdapter<String>(this, android.R.layout.select_dialog_item,mstrings_arr);
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://192.168.1.16:1234/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();
}
//AutoCompleteSearchView
AutoCompleteTextView actv= (AutoCompleteTextView)findViewById(R.id.autoCompleteTextView1);
actv.setThreshold(1);//will start working from first character
actv.setAdapter(mAdapter);//setting the adapter data into the AutoCompleteTextView
actv.setTextColor(Color.RED);
}
XML ,同樣是:
<AutoCompleteTextView
android:id="@+id/autoCompleteTextView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_marginLeft="36dp"
android:layout_marginTop="17dp"
android:ems="10"
android:text="">
<requestFocus />
</AutoCompleteTextView>
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