2 * Copyright © 2012 Mike Beattie <mike@ethernal.org>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
18 package org.altusmetrum.AltosDroid;
20 import java.lang.ref.WeakReference;
21 import java.util.ArrayList;
22 import java.util.concurrent.LinkedBlockingQueue;
24 import android.app.Notification;
25 //import android.app.NotificationManager;
26 import android.app.PendingIntent;
27 import android.app.Service;
28 import android.bluetooth.BluetoothDevice;
29 import android.content.Intent;
30 import android.os.IBinder;
31 import android.os.Handler;
32 import android.os.Message;
33 import android.os.Messenger;
34 import android.util.Log;
35 import android.widget.Toast;
37 // Need the following import to get access to the app resources, since this
38 // class is in a sub-package.
39 //import org.altusmetrum.AltosDroid.R;
41 import org.altusmetrum.AltosLib.*;
43 public class TelemetryService extends Service {
45 private static final String TAG = "TelemetryService";
46 private static final boolean D = true;
48 static final int MSG_REGISTER_CLIENT = 1;
49 static final int MSG_UNREGISTER_CLIENT = 2;
50 static final int MSG_CONNECT = 3;
51 static final int MSG_CONNECTED = 4;
53 public static final int STATE_NONE = 0;
54 public static final int STATE_READY = 1;
55 public static final int STATE_CONNECTING = 2;
56 public static final int STATE_CONNECTED = 3;
58 // Unique Identification Number for the Notification.
59 // We use it on Notification start, and to cancel it.
60 private int NOTIFICATION = R.string.telemetry_service_label;
61 //private NotificationManager mNM;
63 ArrayList<Messenger> mClients = new ArrayList<Messenger>(); // Keeps track of all current registered clients.
64 final Messenger mMessenger = new Messenger(new IncomingHandler()); // Target we publish for clients to send messages to IncomingHandler.
66 // Name of the connected device
67 private String mConnectedDeviceName = null;
68 private AltosBluetooth mAltosBluetooth = null;
69 private int state = STATE_NONE;
70 LinkedBlockingQueue<AltosLine> telem;
72 // Handler of incoming messages from clients.
73 static class IncomingHandler extends Handler {
74 private final WeakReference<TelemetryService> service;
75 IncomingHandler(TelemetryService s) { service = new WeakReference<TelemetryService>(s); }
78 public void handleMessage(Message msg) {
79 TelemetryService s = service.get();
81 case MSG_REGISTER_CLIENT:
82 s.mClients.add(msg.replyTo);
83 if (D) Log.d(TAG, "Client bound to service");
85 case MSG_UNREGISTER_CLIENT:
86 s.mClients.remove(msg.replyTo);
87 if (D) Log.d(TAG, "Client unbound from service");
90 if (D) Log.d(TAG, "Connect command received");
91 s.startAltosBluetooth((BluetoothDevice) msg.obj);
94 if (D) Log.d(TAG, "Connected to device");
95 s.setState(STATE_CONNECTED);
98 super.handleMessage(msg);
103 private void stopAltosBluetooth() {
104 setState(STATE_READY);
105 if (mAltosBluetooth != null) {
106 mAltosBluetooth.close();
107 mAltosBluetooth = null;
112 private void startAltosBluetooth(BluetoothDevice d) {
113 mAltosBluetooth = new AltosBluetooth(d);
114 mAltosBluetooth.add_monitor(telem);
115 setState(STATE_CONNECTING);
118 private synchronized void setState(int s) {
119 if (D) Log.d(TAG, "setState() " + state + " -> " + s);
122 sendMessageToClients(Message.obtain(null, AltosDroid.MSG_STATE_CHANGE, state, -1));
126 public void onCreate() {
127 // Create a reference to the NotificationManager so that we can update our notifcation text later
128 //mNM = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
130 telem = new LinkedBlockingQueue<AltosLine>();
131 setState(STATE_READY);
135 public int onStartCommand(Intent intent, int flags, int startId) {
136 Log.i("TelemetryService", "Received start id " + startId + ": " + intent);
138 CharSequence text = getText(R.string.telemetry_service_started);
140 // Create notification to be displayed while the service runs
141 Notification notification = new Notification(R.drawable.am_status_c, text, 0);
143 // The PendingIntent to launch our activity if the user selects this notification
144 PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
145 new Intent(this, AltosDroid.class), 0);
147 // Set the info for the views that show in the notification panel.
148 notification.setLatestEventInfo(this, getText(R.string.telemetry_service_label), text, contentIntent);
150 // Set the notification to be in the "Ongoing" section.
151 notification.flags |= Notification.FLAG_ONGOING_EVENT;
153 // Move us into the foreground.
154 startForeground(NOTIFICATION, notification);
156 // We want this service to continue running until it is explicitly
157 // stopped, so return sticky.
162 public void onDestroy() {
164 // Stop the bluetooth Comms threads
165 stopAltosBluetooth();
167 // Demote us from the foreground, and cancel the persistent notification.
168 stopForeground(true);
170 // Tell the user we stopped.
171 Toast.makeText(this, R.string.telemetry_service_stopped, Toast.LENGTH_SHORT).show();
175 public IBinder onBind(Intent intent) {
176 return mMessenger.getBinder();