private static void saveTrackingData(TrackingData td) {
String s = Jsons.toJson(td);
Writer r = null;
try {
log.info("ADD: " + s);
File file = new File(getTrackingFile(Calendar.getInstance()));
r = new OutputStreamWriter(new FileOutputStream(file, true), Charsets.UTF_8);
r.append(s);
r.append(Streams.LINE_SEPARATOR);
} catch (IOException e) {
log.error("Failed to save " + s, e);
} finally {
Streams.safeClose(r);
}
}
public static void loadTrackings(Calendar c) {
trackings.clear();
File file = new File(getTrackingFile(c));
if (!file.exists()) {
log.warn(file + "does not exist");
return;
}
log.info("Loading " + file);
float[] results = new float[1];
LineIterator li = null;
try {
li = Files.lineIterator(file);
while (li.hasNext()) {
String line = li.next();
if (Strings.isEmpty(line)) {
continue;
}
TrackingData td = Jsons.fromJson(line, TrackingData.class);
TrackingData ltd = getLastLocation();
if (ltd != null) {
Location.distanceBetween(
ltd.getLatitude(), ltd.getLongitude(), td.getLatitude(), td.getLongitude(), results);
td.setDistance(results[0]);
td.setSpeed(td.getDistance() / DateTimes.subSeconds(td.getDate(), ltd.getDate()));
}
trackings.add(td);
}
} catch (IOException e) {
log.error(e);
} finally {
Streams.safeClose(li);
}
}
public static boolean addLocation(Location location, Geocoder geocoder) {
TrackingData ltd = getLastLocation();
float distance = 0.0f;
float speed = 0.0f;
if (ltd != null) {
float[] results = new float[1];
Location.distanceBetween(
ltd.getLatitude(),
ltd.getLongitude(),
location.getLatitude(),
location.getLongitude(),
results);
distance = results[0];
if (distance < 100) {
log.debug("SKIP SAME " + location + ": " + distance);
return false;
}
long delta = DateTimes.subSeconds(new Date(location.getTime()), ltd.getDate());
// less than 30 minutes
if (delta < 30 * 60) {
speed = distance / delta;
// if (lastState == DetectedActivity.STILL) {
//
// }
// great than 120km/h
if (speed >= 33) {
log.debug("SKIP FAST " + location + ": " + distance);
return false;
}
}
}
String address = "";
try {
List<Address> addresses =
geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 1);
if (Collections.isNotEmpty(addresses)) {
Address a = addresses.get(0);
address = toAddress(a);
}
// if (ltd != null && Strings.isNotEmpty(address)) {
// if (ltd.getAddress().equals(address)) {
// log.debug("Skip (" + location + "): " + address);
// return;
// }
// }
} catch (Exception e) {
// Catch network or other I/O problems.
log.error(
"Failed to get address of (" + location.getLatitude() + ", " + location.getLongitude(),
e);
}
TrackingData td = new TrackingData();
td.setDate(new Date(location.getTime()));
td.setState(getBestState());
td.setLatitude(location.getLatitude());
td.setLongitude(location.getLongitude());
td.setAddress(address);
if (ltd != null) {
float[] results = new float[1];
Location.distanceBetween(
ltd.getLatitude(), ltd.getLongitude(), td.getLatitude(), td.getLongitude(), results);
td.setDistance(results[0]);
td.setSpeed(td.getDistance() / DateTimes.subSeconds(td.getDate(), ltd.getDate()));
}
trackings.add(td);
saveTrackingData(td);
return true;
}