private void getCarsFromCache() {
File directory;
try {
directory = Util.resolveExternalStorageBaseFolder();
File f = new File(directory, CarManager.CAR_CACHE_FILE_NAME);
if (f.isFile()) {
BufferedReader bufferedReader = new BufferedReader(new FileReader(f));
String content = "";
String line = "";
while ((line = bufferedReader.readLine()) != null) {
content = content.concat(line);
}
bufferedReader.close();
JSONArray cars = new JSONArray(content);
addSensorsToList(cars);
}
} catch (IOException e) {
logger.warn(e.getMessage(), e);
} catch (JSONException e) {
logger.warn(e.getMessage(), e);
}
}
/**
* Returns the length of a track in kilometers
*
* @return
*/
public double getLengthOfTrack() {
List<Measurement> measurements = this.getMeasurements();
double distance = 0.0;
if (measurements.size() > 1) {
for (int i = 0; i < measurements.size() - 1; i++) {
distance =
distance
+ Util.getDistance(
measurements.get(i).getLatitude(),
measurements.get(i).getLongitude(),
measurements.get(i + 1).getLatitude(),
measurements.get(i + 1).getLongitude());
}
}
return distance;
}