Trying to code and posted in the wrong place
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()]; coordinateHistory.copyInto(coordinates); 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.setCostAllowed(true); csCriteria.setPreferredPowerConsumption(Criteria.P OWER_USAGE_LOW); Criteria criteria = new Criteria(); criteria.setVerticalAccuracy(50); criteria.setHorizontalAccuracy(50); criteria.setCostAllowed(true); 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()); } } |
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.
https://developer.blackberry.com/ There are some developers here too that might be able to help. |
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