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.Bundle;
31 import android.os.IBinder;
32 import android.os.Handler;
33 import android.os.Message;
34 import android.os.Messenger;
35 import android.os.RemoteException;
36 import android.util.Log;
37 import android.widget.Toast;
39 import org.altusmetrum.AltosLib.*;
41 public class TelemetryService extends Service {
43 private static final String TAG = "TelemetryService";
44 private static final boolean D = true;
46 static final int MSG_REGISTER_CLIENT = 1;
47 static final int MSG_UNREGISTER_CLIENT = 2;
48 static final int MSG_CONNECT = 3;
49 static final int MSG_CONNECTED = 4;
51 public static final int STATE_NONE = 0;
52 public static final int STATE_READY = 1;
53 public static final int STATE_CONNECTING = 2;
54 public static final int STATE_CONNECTED = 3;
56 // Key names received from the TelemetryService Handler
57 public static final String KEY_DEVNAME = "key_devname";
58 public static final String KEY_TOAST = "key_toast";
60 // Unique Identification Number for the Notification.
61 // We use it on Notification start, and to cancel it.
62 private int NOTIFICATION = R.string.telemetry_service_label;
63 //private NotificationManager mNM;
65 ArrayList<Messenger> mClients = new ArrayList<Messenger>(); // Keeps track of all current registered clients.
66 final Handler mHandler = new IncomingHandler(this);
67 final Messenger mMessenger = new Messenger(mHandler); // Target we publish for clients to send messages to IncomingHandler.
69 // Name of the connected device
70 private BluetoothDevice device = null;
71 private AltosBluetooth mAltosBluetooth = null;
72 private int state = STATE_NONE;
73 LinkedBlockingQueue<AltosLine> telem;
75 // Handler of incoming messages from clients.
76 static class IncomingHandler extends Handler {
77 private final WeakReference<TelemetryService> service;
78 IncomingHandler(TelemetryService s) { service = new WeakReference<TelemetryService>(s); }
81 public void handleMessage(Message msg) {
82 TelemetryService s = service.get();
84 case MSG_REGISTER_CLIENT:
85 s.mClients.add(msg.replyTo);
87 msg.replyTo.send(Message.obtain(null, AltosDroid.MSG_STATE_CHANGE, s.state, -1));
88 } catch (RemoteException e) {
89 s.mClients.remove(msg.replyTo);
91 if (D) Log.d(TAG, "Client bound to service");
93 case MSG_UNREGISTER_CLIENT:
94 s.mClients.remove(msg.replyTo);
95 if (D) Log.d(TAG, "Client unbound from service");
98 if (D) Log.d(TAG, "Connect command received");
99 s.device = (BluetoothDevice) msg.obj;
100 s.startAltosBluetooth();
103 if (D) Log.d(TAG, "Connected to device");
104 s.sendMessageToClients(Message.obtain(null, AltosDroid.MSG_DEVNAME, s.device.getName()));
105 s.setState(STATE_CONNECTED);
106 s.mAltosBluetooth.add_monitor(s.telem);
109 super.handleMessage(msg);
114 private void sendMessageToClients(Message m) {
115 for (int i=mClients.size()-1; i>=0; i--) {
117 mClients.get(i).send(m);
118 } catch (RemoteException e) {
124 private void stopAltosBluetooth() {
125 if (D) Log.i(TAG, "Stopping BT");
126 setState(STATE_READY);
127 if (mAltosBluetooth != null) {
128 if (D) Log.i(TAG, "Closing AltosBluetooth");
129 mAltosBluetooth.close();
130 mAltosBluetooth = null;
136 private void startAltosBluetooth() {
137 if (mAltosBluetooth == null) {
138 if (D) Log.i(TAG, "Connecting to " + device.getName());
139 mAltosBluetooth = new AltosBluetooth(device, mHandler);
140 setState(STATE_CONNECTING);
142 stopAltosBluetooth();
143 mHandler.sendMessageDelayed(Message.obtain(null, MSG_CONNECT, device), 1000);
147 private synchronized void setState(int s) {
148 if (D) Log.d(TAG, "setState() " + state + " -> " + s);
151 sendMessageToClients(Message.obtain(null, AltosDroid.MSG_STATE_CHANGE, state, -1));
155 public void onCreate() {
156 // Create a reference to the NotificationManager so that we can update our notifcation text later
157 //mNM = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
159 telem = new LinkedBlockingQueue<AltosLine>();
160 setState(STATE_READY);
164 public int onStartCommand(Intent intent, int flags, int startId) {
165 Log.i("TelemetryService", "Received start id " + startId + ": " + intent);
167 CharSequence text = getText(R.string.telemetry_service_started);
169 // Create notification to be displayed while the service runs
170 Notification notification = new Notification(R.drawable.am_status_c, text, 0);
172 // The PendingIntent to launch our activity if the user selects this notification
173 PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
174 new Intent(this, AltosDroid.class), 0);
176 // Set the info for the views that show in the notification panel.
177 notification.setLatestEventInfo(this, getText(R.string.telemetry_service_label), text, contentIntent);
179 // Set the notification to be in the "Ongoing" section.
180 notification.flags |= Notification.FLAG_ONGOING_EVENT;
182 // Move us into the foreground.
183 startForeground(NOTIFICATION, notification);
185 // We want this service to continue running until it is explicitly
186 // stopped, so return sticky.
191 public void onDestroy() {
193 // Stop the bluetooth Comms threads
194 stopAltosBluetooth();
196 // Demote us from the foreground, and cancel the persistent notification.
197 stopForeground(true);
199 // Tell the user we stopped.
200 Toast.makeText(this, R.string.telemetry_service_stopped, Toast.LENGTH_SHORT).show();
204 public IBinder onBind(Intent intent) {
205 return mMessenger.getBinder();