我的代码过滤了从服务器（PHP和MySQL）加载的数据，并在自动完成视图中显示了它们对SearchView的搜索建议，但是我想在AutoCompleteTextView中而不是SearchView中实现它。
我经验不足，不知道如何做。我遵循了本教程http://androidcss.com/android/android-autocomplete-search-suggestions/，但是在我的项目中，我需要在AutoCompleteTextView中实现建议。
MyActivity.java
package com.androidcss.searchexample;
import android.app.ProgressDialog;
import android.app.SearchManager;
import android.content.Context;
import android.content.Intent;
import android.database.MatrixCursor;
import android.os.AsyncTask;
import android.provider.BaseColumns;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.SearchView;
import android.view.Menu;
import android.view.MenuItem;
import android.support.v4.widget.CursorAdapter;
import android.support.v4.widget.SimpleCursorAdapter;
import android.widget.Toast;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import android.database.Cursor;
public class MainActivity extends AppCompatActivity {
// CONNECTION_TIMEOUT and READ_TIMEOUT are in milliseconds
public static final int CONNECTION_TIMEOUT = 10000;
public static final int READ_TIMEOUT = 15000;
private SimpleCursorAdapter myAdapter;
SearchView searchView = null;
private String[] strArrData = {"No Suggestions"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final String[] from = new String[] {"fishName"};
final int[] to = new int[] {android.R.id.text1};
// setup SimpleCursorAdapter
myAdapter = new SimpleCursorAdapter(MainActivity.this, android.R.layout.simple_spinner_dropdown_item, null, from, to, CursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER);
// Fetch data from mysql table using AsyncTask
new AsyncFetch().execute();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// adds item to action bar
getMenuInflater().inflate(R.menu.search_main, menu);
// Get Search item from action bar and Get Search service
MenuItem searchItem = menu.findItem(R.id.action_search);
SearchManager searchManager = (SearchManager) MainActivity.this.getSystemService(Context.SEARCH_SERVICE);
if (searchItem != null) {
searchView = (SearchView) searchItem.getActionView();
}
if (searchView != null) {
searchView.setSearchableInfo(searchManager.getSearchableInfo(MainActivity.this.getComponentName()));
searchView.setIconified(false);
searchView.setSuggestionsAdapter(myAdapter);
// Getting selected (clicked) item suggestion
searchView.setOnSuggestionListener(new SearchView.OnSuggestionListener() {
@Override
public boolean onSuggestionClick(int position) {
// Add clicked text to search box
CursorAdapter ca = searchView.getSuggestionsAdapter();
Cursor cursor = ca.getCursor();
cursor.moveToPosition(position);
searchView.setQuery(cursor.getString(cursor.getColumnIndex("fishName")),false);
return true;
}
@Override
public boolean onSuggestionSelect(int position) {
return true;
}
});
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String s) {
return false;
}
@Override
public boolean onQueryTextChange(String s) {
// Filter data
final MatrixCursor mc = new MatrixCursor(new String[]{ BaseColumns._ID, "fishName" });
for (int i=0; i<strArrData.length; i++) {
if (strArrData[i].toLowerCase().startsWith(s.toLowerCase()))
mc.addRow(new Object[] {i, strArrData[i]});
}
myAdapter.changeCursor(mc);
return false;
}
});
}
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
return super.onOptionsItemSelected(item);
}
// Every time when you press search button on keypad an Activity is recreated which in turn calls this function
@Override
protected void onNewIntent(Intent intent) {
if (Intent.ACTION_SEARCH.equals(intent.getAction())) {
String query = intent.getStringExtra(SearchManager.QUERY);
if (searchView != null) {
searchView.clearFocus();
}
// User entered text and pressed search button. Perform task ex: fetching data from database and display
}
}
// Create class AsyncFetch
private class AsyncFetch extends AsyncTask<String, String, String> {
ProgressDialog pdLoading = new ProgressDialog(MainActivity.this);
HttpURLConnection conn;
URL url = null;
@Override
protected void onPreExecute() {
super.onPreExecute();
//this method will be running on UI thread
pdLoading.setMessage("\tLoading...");
pdLoading.setCancelable(false);
pdLoading.show();
}
@Override
protected String doInBackground(String... params) {
try {
// Enter URL address where your php file resides or your JSON file address
url = new URL("http://10.0.2.2/cadjobel/public/autocomplete-app.php");
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return e.toString();
}
try {
// Setup HttpURLConnection class to send and receive data from php and mysql
conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(READ_TIMEOUT);
conn.setConnectTimeout(CONNECTION_TIMEOUT);
conn.setRequestMethod("GET");
// setDoOutput to true as we receive data
conn.setDoOutput(true);
conn.connect();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
return e1.toString();
}
try {
int response_code = conn.getResponseCode();
// Check if successful connection made
if (response_code == HttpURLConnection.HTTP_OK) {
// Read data sent from server
InputStream input = conn.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(input));
StringBuilder result = new StringBuilder();
String line;
while ((line = reader.readLine()) != null) {
result.append(line);
}
// Pass data to onPostExecute method
return (result.toString());
} else {
return("Connection error");
}
} catch (IOException e) {
e.printStackTrace();
return e.toString();
} finally {
conn.disconnect();
}
}
@Override
protected void onPostExecute(String result) {
//this method will be running on UI thread
ArrayList<String> dataList = new ArrayList<String>();
pdLoading.dismiss();
if(result.equals("no rows")) {
// Do some action if no data from database
}else{
try {
JSONArray jArray = new JSONArray(result);
// Extract data from json and store into ArrayList
for (int i = 0; i < jArray.length(); i++) {
JSONObject json_data = jArray.getJSONObject(i);
dataList.add(json_data.getString("produto_nome"));
}
strArrData = dataList.toArray(new String[dataList.size()]);
} catch (JSONException e) {
// You to understand what actually error is and handle it appropriately
Toast.makeText(MainActivity.this, e.toString(), Toast.LENGTH_LONG).show();
Toast.makeText(MainActivity.this, result.toString(), Toast.LENGTH_LONG).show();
}
}
}
}
}