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 // Need the following import to get access to the app resources, since this
40 // class is in a sub-package.
41 //import org.altusmetrum.AltosDroid.R;
43 import org.altusmetrum.AltosLib.*;
45 public class TelemetryService extends Service {
47 private static final String TAG = "TelemetryService";
48 private static final boolean D = true;
50 static final int MSG_REGISTER_CLIENT = 1;
51 static final int MSG_UNREGISTER_CLIENT = 2;
52 static final int MSG_CONNECT = 3;
53 static final int MSG_CONNECTED = 4;
55 public static final int STATE_NONE = 0;
56 public static final int STATE_READY = 1;
57 public static final int STATE_CONNECTING = 2;
58 public static final int STATE_CONNECTED = 3;
60 // Key names received from the TelemetryService Handler
61 public static final String KEY_DEVNAME = "key_devname";
62 public static final String KEY_TOAST = "key_toast";
64 // Unique Identification Number for the Notification.
65 // We use it on Notification start, and to cancel it.
66 private int NOTIFICATION = R.string.telemetry_service_label;
67 //private NotificationManager mNM;
69 ArrayList<Messenger> mClients = new ArrayList<Messenger>(); // Keeps track of all current registered clients.
70 final Handler mHandler = new IncomingHandler(this);
71 final Messenger mMessenger = new Messenger(mHandler); // Target we publish for clients to send messages to IncomingHandler.
73 // Name of the connected device
74 private String mConnectedDeviceName = null;
75 private AltosBluetooth mAltosBluetooth = null;
76 private int state = STATE_NONE;
77 LinkedBlockingQueue<AltosLine> telem;
79 // Handler of incoming messages from clients.
80 static class IncomingHandler extends Handler {
81 private final WeakReference<TelemetryService> service;
82 IncomingHandler(TelemetryService s) { service = new WeakReference<TelemetryService>(s); }
85 public void handleMessage(Message msg) {
86 TelemetryService s = service.get();
88 case MSG_REGISTER_CLIENT:
89 s.mClients.add(msg.replyTo);
91 msg.replyTo.send(Message.obtain(null, AltosDroid.MSG_STATE_CHANGE, s.state, -1));
92 } catch (RemoteException e) {
93 s.mClients.remove(msg.replyTo);
95 if (D) Log.d(TAG, "Client bound to service");
97 case MSG_UNREGISTER_CLIENT:
98 s.mClients.remove(msg.replyTo);
99 if (D) Log.d(TAG, "Client unbound from service");
102 if (D) Log.d(TAG, "Connect command received");
103 s.startAltosBluetooth((BluetoothDevice) msg.obj);
106 if (D) Log.d(TAG, "Connected to device");
107 s.mConnectedDeviceName = msg.getData().getString(KEY_DEVNAME);
108 Message m = Message.obtain(null, AltosDroid.MSG_DEVNAME);
109 Bundle b = new Bundle();
110 b.putString(AltosDroid.KEY_DEVNAME, s.mConnectedDeviceName);
112 s.sendMessageToClients(m);
113 s.setState(STATE_CONNECTED);
114 s.mAltosBluetooth.add_monitor(s.telem);
117 super.handleMessage(msg);
122 private void sendMessageToClients(Message m) {
123 for (int i=mClients.size()-1; i>=0; i--) {
125 mClients.get(i).send(m);
126 } catch (RemoteException e) {
132 private void stopAltosBluetooth() {
133 if (D) Log.i(TAG, "Stopping BT");
134 setState(STATE_READY);
135 if (mAltosBluetooth != null) {
136 if (D) Log.i(TAG, "Closing AltosBluetooth");
137 mAltosBluetooth.close();
138 mAltosBluetooth = null;
143 private void startAltosBluetooth(BluetoothDevice d) {
144 if (D) Log.i(TAG, "Connecting to " + d.getName());
145 mAltosBluetooth = new AltosBluetooth(d, mHandler);
146 setState(STATE_CONNECTING);
149 private synchronized void setState(int s) {
150 if (D) Log.d(TAG, "setState() " + state + " -> " + s);
153 sendMessageToClients(Message.obtain(null, AltosDroid.MSG_STATE_CHANGE, state, -1));
157 public void onCreate() {
158 // Create a reference to the NotificationManager so that we can update our notifcation text later
159 //mNM = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
161 telem = new LinkedBlockingQueue<AltosLine>();
162 setState(STATE_READY);
166 public int onStartCommand(Intent intent, int flags, int startId) {
167 Log.i("TelemetryService", "Received start id " + startId + ": " + intent);
169 CharSequence text = getText(R.string.telemetry_service_started);
171 // Create notification to be displayed while the service runs
172 Notification notification = new Notification(R.drawable.am_status_c, text, 0);
174 // The PendingIntent to launch our activity if the user selects this notification
175 PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
176 new Intent(this, AltosDroid.class), 0);
178 // Set the info for the views that show in the notification panel.
179 notification.setLatestEventInfo(this, getText(R.string.telemetry_service_label), text, contentIntent);
181 // Set the notification to be in the "Ongoing" section.
182 notification.flags |= Notification.FLAG_ONGOING_EVENT;
184 // Move us into the foreground.
185 startForeground(NOTIFICATION, notification);
187 // We want this service to continue running until it is explicitly
188 // stopped, so return sticky.
193 public void onDestroy() {
195 // Stop the bluetooth Comms threads
196 stopAltosBluetooth();
198 // Demote us from the foreground, and cancel the persistent notification.
199 stopForeground(true);
201 // Tell the user we stopped.
202 Toast.makeText(this, R.string.telemetry_service_stopped, Toast.LENGTH_SHORT).show();
206 public IBinder onBind(Intent intent) {
207 return mMessenger.getBinder();