/**
* 文 件 名: SuggestionService.java
* 描 述：
* 版 权： Copyright (c)20010-2011 motone All Rights Reserved.
* 公 司: 摩通科技
* 作 者： 黄悦
* 版 本: 1.0
* 创建时间: 2010-12-15
*
* 修改历史：
* 时间 作者 版本 描述
* ------------------------------------------------------------------
* 2010-12-15 黄悦 1.0 1.0 Version
*/
package com.mogoo.launcher2;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.HttpParams;
import org.apache.http.util.EntityUtils;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.res.Resources;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.Uri;
import android.os.Binder;
import android.os.IBinder;
import android.text.TextUtils;
import android.util.Log;
import com.mogoo.launcher.R;
import com.mogoo.launcher2.search.AppsSource;
import com.mogoo.launcher2.search.Source;
import com.mogoo.launcher2.search.WebSource;
import com.mogoo.launcher2.utils.Mogoo_BitmapCache;
public class Mogoo_SuggestionService extends Service {
private SuggestionBinder mBinder = new SuggestionBinder();
private static final boolean DBG = false;
private static final String LOG_TAG = "GoogleSearch";
private static final String USER_AGENT = "Android/1.0";
private static final int HTTP_TIMEOUT_MS = 1000;
// TODO: this should be defined somewhere
private static final String HTTP_TIMEOUT = "http.connection-manager.timeout";
private DefaultHttpClient mHttpClient;
private String mSuggestUri;
public static final int WEB_CURSOR_TYPE = 1;
public static final int DEFAULT_CURSOR_TYPE = 0;
public static final String KEYWORD_KEY = "query";
public static final String CURSOR_TYPE_KEY = "cursor_type";
private LauncherModel mLauncherModel;
private Resources mRes;
@Override
public IBinder onBind(Intent intent) {
int cursorType = intent.getIntExtra(CURSOR_TYPE_KEY, DEFAULT_CURSOR_TYPE);
String keyword = intent.getStringExtra(KEYWORD_KEY);
ArrayList<Source> sources = null;
sources = queryApps(keyword);
if (cursorType == WEB_CURSOR_TYPE) {
ArrayList<Source> temp = queryWeb(keyword);
if(temp != null){
sources.addAll(temp);
temp.clear();
temp = null;
}
}
if(mBinder.sources != null){
mBinder.sources.clear();
}
mBinder.sources = null;
mBinder.sources = sources;
return mBinder;
}
@Override
public void onCreate() {
super.onCreate();
mHttpClient = new DefaultHttpClient();
HttpParams params = mHttpClient.getParams();
params.setLongParameter(HTTP_TIMEOUT, HTTP_TIMEOUT_MS);
// NOTE: Do not look up the resource here; Localization changes may not
// have completed
// yet (e.g. we may still be reading the SIM card).
mSuggestUri = null;
}
@Override
public boolean onUnbind(Intent intent) {
mHttpClient.clearResponseInterceptors();
mHttpClient.clearRequestInterceptors();
mHttpClient = null;
mBinder = null;
return super.onUnbind(intent);
}
public class SuggestionBinder extends Binder {
private ArrayList<Source> sources;
public Mogoo_SuggestionService getService() {
return Mogoo_SuggestionService.this;
}
public ArrayList<Source> getSources() {
return sources;
}
}
private ArrayList<Source> queryApps(String query) {
//add by 张永辉 改为从系统中读取
ArrayList<Source> sources = new ArrayList<Source>();
final Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
final PackageManager packageManager = getPackageManager();
List<ResolveInfo> apps = packageManager
.queryIntentActivities(mainIntent, 0);
LauncherApplication application = (LauncherApplication) getApplication();
Mogoo_BitmapCache cache = application.getIconCache();
List<ApplicationInfo> appInfos = new ArrayList<ApplicationInfo>();
if (apps != null) {
for (ResolveInfo ri : apps) {
appInfos.add(new ApplicationInfo(ri, cache));
}
}
for(ApplicationInfo info:appInfos){
if (info.title != null && info.title.toString().toLowerCase().startsWith(query.toLowerCase())) {
Drawable drawable = new BitmapDrawable(info.iconBitmap);
AppsSource source = new AppsSource(info.title.toString(), drawable, info.intent);
sources.add(source);
}
}
return sources;
//end
}
/**
* Queries for a given search term and returns a cursor containing
* suggestions ordered by best match.
*/
private ArrayList<Source> queryWeb(String query) {
if (TextUtils.isEmpty(query)) {
return null;
}
if (!isNetworkConnected()) {
Log.i(LOG_TAG, "Not connected to network.");
return null;
}
try {
query = URLEncoder.encode(query, "UTF-8");
// NOTE: This code uses resources to optionally select the search
// Uri, based on the
// MCC value from the SIM. iThe default string will most likely be
// fine. It is
// paramerterized to accept info from the Locale, the language code
// is the first
// parameter (%1$s) and the country code is the second (%2$s). This
// code *must*
// function in the same way as a similar lookup in
// com.android.browser.BrowserActivity#onCreate(). If you change
// either of these functions, change them both. (The same is true
// for the underlying
// resource strings, which are stored in mcc-specific xml files.)
if (mSuggestUri == null) {
Locale l = Locale.US;
String language = "en";
String country = "us";
// Chinese and Portuguese have two langauge variants.
mSuggestUri = getBaseContext().getResources().getString(
R.string.google_suggest_base, language, country)
+ "&q=";
}
String suggestUri = mSuggestUri + query;
if (DBG)
Log.d(LOG_TAG, "Sending request: " + suggestUri);
HttpGet method = new HttpGet(suggestUri);
HttpResponse response = mHttpClient.execute(method);
if (response.getStatusLine().getStatusCode() == 200) {
/*
* Goto http://www.google.com/complete/search?json=true&q=foo to
* see what the data format looks like. It's basically a json
* array containing 4 other arrays. We only care about the
* middle 2 which contain the suggestions and their popularity.
*/
JSONObject resultJson = new JSONObject(EntityUtils.toString(response.getEntity()));
ArrayList<Source> sources = getWebContent(resultJson);
resultJson = null;
// JSONArray results = new
// JSONArray(resultJson.getJSONArray("responseData").);
// JSONArray suggestions = results.getJSONArray(1);
// JSONArray popularity = results.getJSONArray(2);
if (DBG)
Log.d(LOG_TAG, "Got " + sources.size() + " results");
return sources;// new WebCursor(suggestions, popularity);
} else {
if (DBG)
Log.d(LOG_TAG, "Request failed " + response.getStatusLine());
}
response.getEntity().consumeContent();
response = null;
method = null;
} catch (UnsupportedEncodingException e) {
Log.w(LOG_TAG, "Error", e);
} catch (IOException e) {
Log.w(LOG_TAG, "Error", e);
} catch (JSONException e) {
Log.w(LOG_TAG, "Error", e);
}
return null;
}
private ArrayList<Source> getWebContent(JSONObject resultJson) throws JSONException {
int resultCode = resultJson.getInt("responseStatus");
/*
* {"content":"<b>Q<\/b> Magazine the UK's biggest music magazines,
* music news, reviews and world exclusives with the most important
* bands on the planet.","GsearchResultClass":"GwebSearch
* ","titleNoFormatting":"Q Magazine | Music news & reviews, music
* videos, band pictures ...","title":"<b>Q<\/b> Magazine | Music news
* & reviews, music videos, band pictures <b>...
* <\/b>","cacheUrl":"http:\/\/www.google.com\/search?q=cache
* :3aIeKl4cbKAJ :www.qthemusic.com","unescapedUrl":"http:\/\/www.
* qthemusic.com \/","url":"http:\/\/www.qthemusic.com\/","visibleUrl
* ":"www.qthemusic.com"}
*/
if (resultCode == 200) {
ArrayList<Source> sources = new ArrayList<Source>();
JSONObject responseData = resultJson.getJSONObject("responseData");
JSONArray list = responseData.getJSONArray("results");
JSONObject item = null;
Uri sourceIconUri = null;
for (int i = 0; i < list.length(); i++) {
item = list.getJSONObject(i);
sourceIconUri = Uri.parse(item.getString("url"));
WebSource source = WebSource.create(sourceIconUri, item.getString("title"), item.getString("content"), null, null);
sources.add(source);
}
item = null;
sourceIconUri = null;
list = null;
responseData = null;
return sources;
}
return null;
}
private boolean isNetworkConnected() {
NetworkInfo networkInfo = getActiveNetworkInfo();
return networkInfo != null && networkInfo.isConnected();
}
private NetworkInfo getActiveNetworkInfo() {
try {
ConnectivityManager connectivity = (ConnectivityManager) getApplicationContext()
.getSystemService(Context.CONNECTIVITY_SERVICE);
if (connectivity == null) {
return null;
}
return connectivity.getActiveNetworkInfo();
} catch (Exception e) {
Log.w(LOG_TAG, e);
}
return null;
}
}