Java tutorial
/* * Copyright (C) 2013 Open Whisper Systems * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package com.mindprotectionkit.freephone.monitor; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.net.http.AndroidHttpClient; import android.util.Log; import com.google.thoughtcrimegson.Gson; import org.apache.http.HttpResponse; import org.apache.http.client.methods.HttpGet; import com.mindprotectionkit.freephone.Release; import com.mindprotectionkit.freephone.ui.ApplicationPreferencesActivity; import com.mindprotectionkit.freephone.util.PeriodicActionUtils; import java.io.IOException; import java.io.InputStreamReader; /** * A broadcast receiver that is responsible for scheduling and handling notifications * for periodic monitor config update events. * * @author Stuart O. Anderson */ public class MonitorConfigUpdateReceiver extends BroadcastReceiver { private static final Gson gson = new Gson(); @Override public void onReceive(Context context, Intent intent) { Log.w("MonitorConfigUpdateReceiver", "Initiating scheduled monitor config update..."); Intent serviceIntent = new Intent(context, MonitorConfigUpdateService.class); context.startService(serviceIntent); } public static void maybeUpdateConfig(Context context) { Log.d("MonitorConfigUpdateReceiver", "Updating config now"); AndroidHttpClient client = AndroidHttpClient.newInstance("RedPhone"); try { String uri = String.format("https://%s/collector/call_quality_questions", Release.DATA_COLLECTION_SERVER_HOST); HttpGet getRequest = new HttpGet(uri); HttpResponse response = client.execute(getRequest); InputStreamReader jsonReader = new InputStreamReader(response.getEntity().getContent()); CallQualityConfig config = gson.fromJson(jsonReader, CallQualityConfig.class); ApplicationPreferencesActivity.setCallQualityConfig(context, config); } catch (IOException e) { Log.d("MonitorConfigUpdateReceiver", "update failed", e); } catch (Exception e) { Log.e("MonitorConfigUpdateReceiver", "update error", e); } finally { client.close(); } PeriodicActionUtils.scheduleUpdate(context, MonitorConfigUpdateReceiver.class); } }