1/* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.bordeaux.services; 18 19import android.app.Activity; 20import android.app.Notification; 21import android.app.NotificationManager; 22import android.app.PendingIntent; 23import android.app.Service; 24import android.content.ComponentName; 25import android.content.Context; 26import android.content.Intent; 27import android.content.pm.PackageManager; 28import android.content.ServiceConnection; 29import android.os.Bundle; 30import android.os.Handler; 31import android.os.IBinder; 32import android.os.Message; 33import android.os.Process; 34import android.os.RemoteCallbackList; 35import android.os.RemoteException; 36import android.view.View; 37import android.view.View.OnClickListener; 38import android.widget.Button; 39import android.widget.TextView; 40import android.widget.Toast; 41 42import android.bordeaux.R; 43import android.util.Log; 44 45import java.io.*; 46 47/** 48 * Machine Learning service that runs in a remote process. 49 * The application doesn't use this class directly. 50 * 51 */ 52public class BordeauxService extends Service { 53 private final String TAG = "BordeauxService"; 54 /** 55 * This is a list of callbacks that have been registered with the 56 * service. 57 * It's a place holder for future communications with all registered 58 * clients. 59 */ 60 final RemoteCallbackList<IBordeauxServiceCallback> mCallbacks = 61 new RemoteCallbackList<IBordeauxServiceCallback>(); 62 63 int mValue = 0; 64 NotificationManager mNotificationManager; 65 66 BordeauxSessionManager mSessionManager; 67 68 @Override 69 public void onCreate() { 70 Log.i(TAG, "Bordeaux service created."); 71 mNotificationManager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE); 72 mSessionManager = new BordeauxSessionManager(this); 73 74 // Display a notification about us starting. 75 // TODO: don't display the notification after the service is 76 // automatically started by the system, currently it's useful for 77 // debugging. 78 showNotification(); 79 } 80 81 @Override 82 public void onDestroy() { 83 // Save the sessions 84 mSessionManager.saveSessions(); 85 86 // Cancel the persistent notification. 87 mNotificationManager.cancel(R.string.remote_service_started); 88 89 // Tell the user we stopped. 90 Toast.makeText(this, R.string.remote_service_stopped, Toast.LENGTH_SHORT).show(); 91 92 // Unregister all callbacks. 93 mCallbacks.kill(); 94 95 Log.i(TAG, "Bordeaux service stopped."); 96 } 97 98 @Override 99 public IBinder onBind(Intent intent) { 100 // Return the requested interface. 101 if (IBordeauxService.class.getName().equals(intent.getAction())) { 102 return mBinder; 103 } 104 return null; 105 } 106 107 108 // The main interface implemented by the service. 109 private final IBordeauxService.Stub mBinder = new IBordeauxService.Stub() { 110 private IBinder getLearningSession(Class learnerClass, String name) { 111 PackageManager pm = getPackageManager(); 112 String uidname = pm.getNameForUid(getCallingUid()); 113 Log.i(TAG,"Name for uid: " + uidname); 114 BordeauxSessionManager.SessionKey key = 115 mSessionManager.getSessionKey(uidname, learnerClass, name); 116 Log.i(TAG, "request learning session: " + key.value); 117 try { 118 IBinder iLearner = mSessionManager.getSessionBinder(learnerClass, key); 119 return iLearner; 120 } catch (RuntimeException e) { 121 Log.e(TAG, "Error getting learning interface" + e); 122 return null; 123 } 124 } 125 126 public IBinder getClassifier(String name) { 127 return getLearningSession(Learning_MulticlassPA.class, name); 128 } 129 130 public IBinder getRanker(String name) { 131 return getLearningSession(Learning_StochasticLinearRanker.class, name); 132 } 133 134 public void registerCallback(IBordeauxServiceCallback cb) { 135 if (cb != null) mCallbacks.register(cb); 136 } 137 138 public void unregisterCallback(IBordeauxServiceCallback cb) { 139 if (cb != null) mCallbacks.unregister(cb); 140 } 141 }; 142 143 @Override 144 public void onTaskRemoved(Intent rootIntent) { 145 Toast.makeText(this, "Task removed: " + rootIntent, Toast.LENGTH_LONG).show(); 146 } 147 148 /** 149 * Show a notification while this service is running. 150 * TODO: remove the code after production (when service is loaded 151 * automatically by the system). 152 */ 153 private void showNotification() { 154 // In this sample, we'll use the same text for the ticker and the expanded notification 155 CharSequence text = getText(R.string.remote_service_started); 156 157 // The PendingIntent to launch our activity if the user selects this notification 158 PendingIntent contentIntent = 159 PendingIntent.getActivity(this, 0, 160 new Intent("android.bordeaux.DEBUG_CONTROLLER"), 0); 161 162 // // Set the info for the views that show in the notification panel. 163 164 Notification.Builder builder = new Notification.Builder(this); 165 builder.setSmallIcon(R.drawable.ic_bordeaux); 166 builder.setWhen(System.currentTimeMillis()); 167 builder.setTicker(text); 168 builder.setContentTitle(text); 169 builder.setContentIntent(contentIntent); 170 Notification notification = builder.getNotification(); 171 // Send the notification. 172 // We use a string id because it is a unique number. We use it later to cancel. 173 mNotificationManager.notify(R.string.remote_service_started, notification); 174 } 175 176} 177