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Contributor
Posts: 17
Registered: ‎08-06-2012
My Device: Curve 9320
My Carrier: Vodaphone

Location info Not displaying in device

Hi,

 

I was testing the Blackberry sample application. The GPS app. It works in simulation. But in device (Blackberry curve 9320, Bold 9900) the same app doesn't show the latitude and longitude info.

 

I have checked the Location settings to 'On' in device.

 

Please help.

 

Regards,

Sanghamitra Pati

Developer
Posts: 17,025
Registered: ‎07-29-2008
My Device: Z10 LE, Z30, Passport
My Carrier: O2 Germany

Re: Location info Not displaying in device

Did your device get a gps fix? It won't if it is indoors, try it on a window maybe.

Otherwise this should cover the basics:
http://supportforums.blackberry.com/t5/Java-Development/Location-APIs-Start-to-finish/ta-p/571949
----------------------------------------------------------
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please mark posts as solved if you found a solution.
@SimonHain on twitter
Super Contributor
Posts: 278
Registered: ‎11-04-2010
My Device: 4.5 and above
My Carrier: none

Re: Location info Not displaying in device

Hi,

 

Please check this,

 

 
import javax.microedition.location.LocationProvider;
import javax.microedition.location.LocationListener;
import javax.microedition.location.Location;
import javax.microedition.location.LocationException;
import javax.microedition.location.Criteria;
 

public class GetLocationDetails {
    private ListnerInterface callback;
    private LocationProvider provider,_locationProvider;
    private double longitude=0.0,lattitude=0.0;
    private Criteria criteria;  
    private float Altitude = 0;
    private float Speed  = 0;
    private float Accuracy = 0;
    
    public GetLocationDetails(ListnerInterface callback) {  
        this.callback = callback; 
        startLocationUpdate();
    }
    
    public class LocationListenerImpl implements LocationListener {
            public void locationUpdated(LocationProvider provider, final Location location) {
                //System.out.println("---Location Updated-----");
                if (location.isValid()) {
                    //System.out.println("---Location Valid----");
                    longitude = location.getQualifiedCoordinates().getLongitude();
                    lattitude = location.getQualifiedCoordinates().getLatitude();
                    Altitude = location.getQualifiedCoordinates().getAltitude();
                    Speed  = location.getSpeed();
                    Accuracy = location.getQualifiedCoordinates().getHorizontalAccuracy();
                    //System.out.println("Lattitude :-=============================="+lattitude);
                    //System.out.println("Longitude :-=============================="+longitude);
                    _locationProvider.setLocationListener(null, 0, 0, 0);
                    callback.ListnerNotify(Double.toString(lattitude), Double.toString(longitude), Float.toString(Altitude), Float.toString(Speed), Float.toString(Accuracy), LBF_Constants.SUCCESS);
                }else{
                    //System.out.println("else NOT valid--Cellsite valide=-----");
                    setupCriteria();
                    setupProvider();
                    //System.out.println("---Location Not Valid----");
                    //callback.ListnerNotify(null, null, null, null, null, LBF_Constants.FAILURE);
                }
            }
            public void providerStateChanged(LocationProvider provider, int newState) {
            }
        }
        
        private void setupCriteria() {
            criteria = new Criteria();
            criteria.setCostAllowed(true);
            criteria.setHorizontalAccuracy(Criteria.NO_REQUIREMENT);
            criteria.setVerticalAccuracy(Criteria.NO_REQUIREMENT);
            criteria.setPreferredPowerConsumption(Criteria.POWER_USAGE_LOW);
        }
        
        private void setupProvider() {
            try {
                try {
                    Thread.sleep(5000);
                } catch (Throwable e) {
                System.out.println(e.toString());
                }
                provider = LocationProvider.getInstance(criteria);
                provider.setLocationListener(
                        new LocationListenerImpl(), 1, 1, 1);
            } catch (Throwable t) {
                callback.ListnerNotify(null, null, null, null, null, LBF_Constants.FAILURE);
                System.out.println(t.toString());
            }
        }
        public void startLocationUpdate()  {
            try{
                _locationProvider = LocationProvider.getInstance(null);
                if (_locationProvider != null) {
                    _locationProvider.setLocationListener(
                            new LocationListenerImpl(), 1, 1, 1);
                }else {
                    String msg = "GPS does not support. You won't receive notifications on this device.";
                    System.out.println(msg);
                    callback.ListnerNotify(null, null, null, null, null, msg);
                } 
            }catch(LocationException le) {
                System.out.println("----Exception Of Location--"+le);
                callback.ListnerNotify(null, null, null, null, null, LBF_Constants.FAILURE);
            }
        }
} 

 callback.listnerNotify is for sending the result to place where you want..

 

Regards,

pp

Highlighted
Developer
Posts: 19,636
Registered: ‎07-14-2008
My Device: Not Specified

Re: Location info Not displaying in device

Rather than just pasting in code, I recommend that you review the KB article Simon has pointed you at.

 

If you do want to paste in code, then I recommend this:

http://supportforums.blackberry.com/t5/Java-Development/Simple-Location-API/ta-p/1145951