GPS in Nokia 6110 Navigator

[everestdream]

hi sir,

i've tested fined the GPS in nokia 6110 Navigator with some shareware of MIDlet that read Position Informations from build-in GPS. now i'm trying to write a simple MIDlet that performs the same, the code as below and the midlet responsed "Location request timed out". seems like unable to read the information from GPS device, did i missed anything in the code? appreciate any helps. many thanks.


import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.location.*;
import java.util.Date;

public class TestLocation extends MIDlet implements LocationListener{
private Display display;
private Form form;

private LocationProvider locationProvider = null;
private Coordinates oldCoordinates = null, currentCoordinates = null;
private float distance = 0;
private int azimuth = 0;

public TestLocation(){

}

public void startApp() {
display = Display.getDisplay(this);

if (form == null) {
form = new Form("TestLocation");
display.setCurrent(form);
}

try {

// Create a Criteria object for defining desired selection criteria
Criteria cr = new Criteria();

LocationProvider lp = LocationProvider.getInstance(cr);

// get the location, one minute timeout
Location l = lp.getLocation(60);

Coordinates c = l.getQualifiedCoordinates();

if (c != null) {
// use coordinate information
displayMessage(String.valueOf(c.getLatitude()));
}else{displayMessage("Nothing");
}

} catch (Exception e) {
displayMessage(e.getMessage());
// not able to retrive location information
}
}

public void pauseApp() {}

public void destroyApp(boolean unconditional) {
}

public void displayMessage(String s) {
Alert a = new Alert("", s, null, null);
a.setTimeout(Alert.FOREVER);
display.setCurrent(a, form);
}

public void locationUpdated(LocationProvider provider, final Location location) {
}

public void providerStateChanged(LocationProvider provider, int newState) {
}

}

regards
eddie

[everestdream]

i found the caused of problem, everything works fined and can retrieve position information from built-in GPS when the "Buetooth GPS" at nokia phone menu \Settings\Phone Settings\General\Positioning\Positioning Methods is disabled, enabled rest of them, the problem occured when this option is enabled. means the MIDlet will try to connect to the bluetooth GPS when the option is enabled and it will not try the built-in GPS if failed to find the Bluetooth GPS.

so my question here is how can i write a MIDlet to search for available built-in GPS else try to search for the bluetooth GPS?

appreciate any helps...many thanks.

regards
eddie