Question

I’m busy writing a Program that Transmits GPS Coordinates to a Server from a mobile phone where the coordinates are then used for calculations. But I’m constantly hitting a wall with blackberry. I have built the Android App and it works great but can’t seem to contact the server on a real blackberry device. I have tested the application in a simulator and it works perfectly but when I install it on a real phone I get no request the phone.

I have read quite a bit about the secret strings to append at the end of the url so I adapted some demo code to get me the first available transport but still nothing …

The Application is Signed and I normally then either install it by debugging through eclipse or directly on the device from the .jad file and allow the application the required permissions.

The current code was adapted from the HTTP Connection Demo in the Blackberry SDK.

Could you have a look and give me some direction. I’m losing too much hair here …

The Backend Service that keeps running:

public void run() {

        System.out.println("Starting Loop");

        Criteria cr = new Criteria();
        cr.setHorizontalAccuracy(Criteria.NO_REQUIREMENT);
        cr.setVerticalAccuracy(Criteria.NO_REQUIREMENT);
        cr.setCostAllowed(false);
        cr.setPreferredPowerConsumption(Criteria.NO_REQUIREMENT);
        cr.setPreferredResponseTime(1000);
        LocationProvider lp = null;
        try {
            lp = LocationProvider.getInstance(cr);
        } catch (LocationException e) {
            System.out.println("*****************Exception" + e);
        }
        if (lp == null) {
            UiApplication.getUiApplication().invokeLater(new Runnable() {
                public void run() {
                    Dialog.alert("GPS not supported!");
                    return;
                }
            });
        } else {

            System.out
                    .println(lp.getState() + "-" + LocationProvider.AVAILABLE);

            switch (lp.getState()) {
            case LocationProvider.AVAILABLE:
                // System.out.println("Provider is AVAILABLE");
                while (true) {
                    Location l = null;
                    int timeout = 120;
                    try {
                        l = lp.getLocation(timeout);
                        final Location fi = l;

                        System.out.println("Got a Coordinate "
                                + l.getQualifiedCoordinates().getLatitude()
                                + ", "
                                + l.getQualifiedCoordinates().getLongitude());

                        System.out.println("http://" + Constants.website_base
                                + "/apis/location?device_uid=" + Constants.uid
                                + "&lat="
                                + l.getQualifiedCoordinates().getLatitude()
                                + "&lng="
                                + l.getQualifiedCoordinates().getLongitude());

                        if (!_connectionThread.isStarted()) {
                            fetchPage("http://"
                                    + Constants.website_base
                                    + "/apis/location?device_uid="
                                    + Constants.uid
                                    + "&lat="
                                    + l.getQualifiedCoordinates().getLatitude()
                                    + "&lng="
                                    + l.getQualifiedCoordinates()
                                            .getLongitude());
                        } else {
                            createNewFetch("http://"
                                    + Constants.website_base
                                    + "/apis/location?device_uid="
                                    + Constants.uid
                                    + "&lat="
                                    + l.getQualifiedCoordinates().getLatitude()
                                    + "&lng="
                                    + l.getQualifiedCoordinates()
                                            .getLongitude());
                        }

                        Thread.sleep(1000 * 60);

                    } catch (LocationException e) {
                        System.out.println("Location timeout");
                    } catch (InterruptedException e) {
                        System.out.println("InterruptedException"
                                + e.getMessage());
                    } catch (Exception ex) {
                        System.err.println(ex.getMessage());
                        ex.printStackTrace();
                    }
                }
            }
    }

My Connection is Made with:

ConnectionFactory connFact = new ConnectionFactory();
ConnectionDescriptor connDesc = connFact.getConnection(getUrl());

// Open the connection and extract the data.
try {
    // StreamConnection s = null;
    // s = (StreamConnection) Connector.open(getUrl());
    HttpConnection httpConn = (HttpConnection) connDesc.getConnection();
    /* Data is Read here with a Input Stream */

Any Ideas ?

Answer 1

Figured it out!

Using a function I found online to determine which ; extension to use when connecting by using numerous Try / Catch. Then had to set the Internet APN settings. I’m in South-Africa using Vodacom so the APN is “Internet” with no Password.

Barely have hair left ….