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);
}
}