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/*
* Copyright (C) 2010 Herbert von Broeuschmeul
* Copyright (C) 2010 BluetoothGPS4Droid Project
*
* This file is part of BluetoothGPS4Droid.
*
* BluetoothGPS4Droid 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.
*
* BluetoothGPS4Droid 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 BluetoothGPS4Droid. If not, see <http://www.gnu.org/licenses/>.
*/
/**
*
*/
package org.broeuschmeul.android.gps.bluetooth.provider;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
import android.app.Notification;
import android.app.PendingIntent;
import android.app.Service;
import android.bluetooth.BluetoothAdapter;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.location.GpsStatus.NmeaListener;
import android.os.Bundle;
import android.os.IBinder;
import android.preference.PreferenceManager;
import android.util.Config;
import android.util.Log;
import android.widget.Toast;
/**
* A Service used to replace Android internal GPS with a bluetooth GPS and/or write GPS NMEA data in a File.
*
* @author Herbert von Broeuschmeul
*
*/
public class BluetoothGpsProviderService extends Service implements NmeaListener, LocationListener {
public static final String ACTION_START_TRACK_RECORDING = "org.broeuschmeul.android.gps.bluetooth.tracker.nmea.intent.action.START_TRACK_RECORDING";
public static final String ACTION_STOP_TRACK_RECORDING = "org.broeuschmeul.android.gps.bluetooth.tracker.nmea.intent.action.STOP_TRACK_RECORDING";
public static final String ACTION_START_GPS_PROVIDER = "org.broeuschmeul.android.gps.bluetooth.provider.nmea.intent.action.START_GPS_PROVIDER";
public static final String ACTION_STOP_GPS_PROVIDER = "org.broeuschmeul.android.gps.bluetooth.provider.nmea.intent.action.STOP_GPS_PROVIDER";
public static final String PREF_START_GPS_PROVIDER = "startGps";
public static final String PREF_TRACK_RECORDING = "trackRecording";
public static final String PREF_TRACK_MIN_DISTANCE = "trackMinDistance";
public static final String PREF_TRACK_MIN_TIME = "trackMinTime";
public static final String PREF_TRACK_FILE_DIR = "trackFileDirectory";
public static final String PREF_TRACK_FILE_PREFIX = "trackFilePrefix";
public static final String PREF_BLUETOOTH_DEVICE = "bluetoothDevice";
private LocationManager lm;
private BlueetoothGpsManager gpsManager = null;
private PrintWriter writer;
private File trackFile;
private boolean preludeWritten = false;
private Toast toast ;
@Override
public void onCreate() {
super.onCreate();
toast = Toast.makeText(getApplicationContext(), "NMEA track recording... on", Toast.LENGTH_SHORT);
lm = (LocationManager)this.getSystemService(Context.LOCATION_SERVICE);
}
@Override
public void onStart(Intent intent, int startId) {
// super.onStart(intent, startId);
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
SharedPreferences.Editor edit = sharedPreferences.edit();
String deviceAddress = sharedPreferences.getString(PREF_BLUETOOTH_DEVICE, null);
if (Config.LOGD){
Log.d(BluetoothGpsProviderService.class.getName(), "prefs device addr: "+deviceAddress);
}
if (ACTION_START_GPS_PROVIDER.equals(intent.getAction())){
if (gpsManager == null){
if (BluetoothAdapter.checkBluetoothAddress(deviceAddress)){
gpsManager = new BlueetoothGpsManager(this, deviceAddress);
gpsManager.enable();
if (gpsManager.isEnabled()){
gpsManager.enableMockLocationProvider(LocationManager.GPS_PROVIDER);
if (! sharedPreferences.getBoolean(PREF_START_GPS_PROVIDER, false)){
edit.putBoolean(PREF_START_GPS_PROVIDER,true);
edit.commit();
}
Notification notification = new Notification(R.drawable.icon, this.getString(R.string.foreground_gps_provider_started_notification), System.currentTimeMillis());
Intent myIntent = new Intent(this, BluetoothGpsActivity.class);
PendingIntent myPendingIntent = PendingIntent.getActivity(this, 0, myIntent, PendingIntent.FLAG_CANCEL_CURRENT);
notification.setLatestEventInfo(getApplicationContext(), this.getString(R.string.foreground_service_started_notification_title), this.getString(R.string.foreground_gps_provider_started_notification), myPendingIntent);
startForeground(R.string.foreground_gps_provider_started_notification, notification);
toast.setText(this.getString(R.string.msg_gps_provider_started));
toast.show();
} else {
stopSelf();
}
} else {
// if (! sharedPreferences.getBoolean(PREF_START_GPS_PROVIDER, true)){
// edit.putBoolean(PREF_START_GPS_PROVIDER,false);
// edit.commit();
// }
// toast.setText(this.getString(R.string.msg_invalid_device));
// toast.show();
stopSelf();
}
} else {
toast.setText(this.getString(R.string.msg_gps_provider_already_started));
toast.show();
}
} else if (ACTION_START_TRACK_RECORDING.equals(intent.getAction())){
if (trackFile == null){
if (gpsManager != null){
beginTrack();
gpsManager.addNmeaListener(this);
if (! sharedPreferences.getBoolean(PREF_TRACK_RECORDING, false)){
edit.putBoolean(PREF_TRACK_RECORDING,true);
edit.commit();
}
toast.setText(this.getString(R.string.msg_nmea_recording_started));
toast.show();
} else {
endTrack();
if ( sharedPreferences.getBoolean(PREF_TRACK_RECORDING, true)){
edit.putBoolean(PREF_TRACK_RECORDING,false);
edit.commit();
}
// toast.setText(this.getString(R.string.msg_device_not_started));
// toast.show();
}
} else {
toast.setText(this.getString(R.string.msg_nmea_recording_already_started));
toast.show();
}
} else if (ACTION_STOP_TRACK_RECORDING.equals(intent.getAction())){
if (gpsManager != null){
gpsManager.removeNmeaListener(this);
endTrack();
toast.setText(this.getString(R.string.msg_nmea_recording_stopped));
toast.show();
}
if (sharedPreferences.getBoolean(PREF_TRACK_RECORDING, true)){
edit.putBoolean(PREF_TRACK_RECORDING,false);
edit.commit();
}
} else if (ACTION_STOP_GPS_PROVIDER.equals(intent.getAction())){
if (sharedPreferences.getBoolean(PREF_START_GPS_PROVIDER, true)){
edit.putBoolean(PREF_START_GPS_PROVIDER,false);
edit.commit();
}
stopSelf();
}
}
/* (non-Javadoc)
* @see android.app.Service#onStartCommand(android.content.Intent, int, int)
*/
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
onStart(intent, startId);
return Service.START_NOT_STICKY;
}
@Override
public void onDestroy() {
BlueetoothGpsManager manager = gpsManager;
gpsManager = null;
if (manager != null){
if (manager.getDisableReason() != 0){
toast.setText(manager.getDisableReason());
toast.show();
} else {
toast.setText(R.string.msg_gps_provider_stopped);
toast.show();
}
manager.removeNmeaListener(this);
manager.disableMockLocationProvider();
manager.disable();
}
endTrack();
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
SharedPreferences.Editor edit = sharedPreferences.edit();
if (sharedPreferences.getBoolean(PREF_TRACK_RECORDING, true)){
edit.putBoolean(PREF_TRACK_RECORDING,false);
edit.commit();
}
if (sharedPreferences.getBoolean(PREF_START_GPS_PROVIDER, true)){
edit.putBoolean(PREF_START_GPS_PROVIDER,false);
edit.commit();
}
super.onDestroy();
}
private void beginTrack(){
SimpleDateFormat fmt = new SimpleDateFormat("_yyyy-MM-dd_HH-mm-ss'.nmea'");
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
String trackDirName = sharedPreferences.getString(PREF_TRACK_FILE_DIR, this.getString(R.string.defaultTrackFileDirectory));
String trackFilePrefix = sharedPreferences.getString(PREF_TRACK_FILE_PREFIX, this.getString(R.string.defaultTrackFilePrefix));
trackFile = new File(trackDirName,trackFilePrefix+fmt.format(new Date()));
Log.i(BluetoothGpsProviderService.class.getName(), "Writing the prelude of the NMEA file: "+trackFile.getAbsolutePath());
File trackDir = trackFile.getParentFile();
try {
if ((! trackDir.mkdirs()) && (! trackDir.isDirectory())){
Log.e(BluetoothGpsProviderService.class.getName(), "Error while creating parent dir of NMEA file: "+trackDir.getAbsolutePath());
}
writer = new PrintWriter(new BufferedWriter(new FileWriter(trackFile)));
preludeWritten = true;
} catch (IOException e) {
Log.e(BluetoothGpsProviderService.class.getName(), "Error while writing the prelude of the NMEA file: "+trackFile.getAbsolutePath(), e);
// there was an error while writing the prelude of the NMEA file, stopping the service...
stopSelf();
// } catch (SecurityException e) {
// Log.e(BluetoothGpsProviderService.class.getName(), "Error while writing the prelude of the NMEA file: "+trackFile.getAbsolutePath(), e);
// // there was an error while writing the prelude of the NMEA file, stopping the service...
// stopSelf();
}
}
private void endTrack(){
if (trackFile != null && writer != null){
Log.i(BluetoothGpsProviderService.class.getName(), "Ending the NMEA file: "+trackFile.getAbsolutePath());
preludeWritten = false;
writer.close();
trackFile = null;
}
}
private void addNMEAString(String data){
if (! preludeWritten){
beginTrack();
}
Log.d(BluetoothGpsProviderService.class.getName(), "Adding data in the NMEA file: "+ data);
if (trackFile != null && writer != null){
writer.print(data);
}
}
/* (non-Javadoc)
* @see android.app.Service#onBind(android.content.Intent)
*/
@Override
public IBinder onBind(Intent intent) {
if (Config.LOGD){
Log.d(BluetoothGpsProviderService.class.getName(), "trying access IBinder");
}
return null;
}
@Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
}
@Override
public void onProviderDisabled(String provider) {
Log.e(BluetoothGpsProviderService.class.getName(), "The GPS has been disabled.....stopping the NMEA tracker service.");
stopSelf();
}
@Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
@Override
public void onNmeaReceived(long timestamp, String data) {
addNMEAString(data);
}
}
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