BlackBerry Forums Support Community

Closed Thread
LinkBack Thread Tools
Old 11-06-2012, 04:34 PM   #1 (permalink)
New Member
Join Date: Nov 2012
Model: 7100t
Carrier: 3g
Posts: 1
Post Thanks: 0
Thanked 0 Times in 0 Posts
Default Trying to code and posted in the wrong place

Please Login to Remove!

hi any one here help me plz i am beginging in blackberry development i want to calculate distance when i drive my car to stop . my code get latitude , logitude , speed and show map correctly but temporary distance = 0
this is the code
public LocationHandler(LocationMainScreen screen) {
this.screen = screen;

public Coordinates[] getCoordinateHistory() {
Coordinates[] coordinates = new Coordinates[coordinateHistory.size()];
return coordinates;

public void locationUpdated(LocationProvider provider, Location location) {
QualifiedCoordinates qualifiedCoordinates = location.getQualifiedCoordinates();

screen.setLocation(qualifiedCoordinates.getLongitu de(), qualifiedCoordinates.getLatitude());

String message = "Successfully got location at ";
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("HH:mm:ss");
message += simpleDateFormat.format(new Date(location.getTimestamp()));

if (coordinateHistory.size() > 0) {
Coordinates lastCoordinates = (Coordinates)coordinateHistory.lastElement();
message += "\nDistance from last update: " + lastCoordinates.distance(qualifiedCoordinates);

coordinateHistory.addElement(qualifiedCoordinates) ;

public void run() {
Criteria csCriteria = new Criteria();
csCriteria.setHorizontalAccuracy(Criteria.NO_REQUI REMENT);
csCriteria.setVerticalAccuracy(Criteria.NO_REQUIRE MENT);
csCriteria.setPreferredPowerConsumption(Criteria.P OWER_USAGE_LOW);

Criteria criteria = new Criteria();
criteria.setPreferredPowerConsumption(Criteria.POW ER_USAGE_HIGH);

try {
screen.setMessage("Getting location...");
LocationProvider provider = LocationProvider.getInstance(criteria);
Location location = provider.getLocation(-1);

locationUpdated(provider, location);
if (periodicUpdates) {
// Update every 3 minutes
provider.setLocationListener(this, 180, -1, 10);
} catch (LocationException e) {
screen.setMessage("LocationException occurred getting location: " + e.getMessage());
} catch (InterruptedException e) {
screen.setMessage("InterruptedException occurred getting location: " + e.getMessage());
Old 11-06-2012, 08:56 PM   #2 (permalink)
BBF Spam Killer Moderator
daphne's Avatar
Join Date: May 2007
Location: on a sunny beach
Model: Paspt
Carrier: VZW but not for long
Posts: 9,176
Post Thanks: 120
Thanked 147 Times in 116 Posts
Default Re: Trying to code and posted in the wrong place

Hi, I suggest you to check out the BlackBerry developer site. There is lots of info and even sample code.
There are some developers here too that might be able to help.
Report spam text messages to 7726
#BlackBerry by choice

Copyright 2004-2016
The names RIM and BlackBerry are registered Trademarks of BlackBerry Inc.