Question

i am getting data from gps provider using mylocation class. code is this:

MyLocation.LocationResult locationResult = new MyLocation.LocationResult() {
        @Override
        public void gotLocation(Location location) {
            //Got the location!

            // for phone
            //currentLocation = new GeoPoint((int) (location.getLatitude() * 1000000),
            //   (int) (location.getLongitude() * 1000000));

            // for emulator
            currentLocation = new GeoPoint((int) (location.getLatitude()),
                    (int) (location.getLongitude()));

            doSomething();

        }
    };
    MyLocation myLocation = new MyLocation();
    myLocation.getLocation(this, locationResult);

when i use the app in emulator(2.3.3) it shows the correct location without multiplying anything.

but when i use it in a device(4.0) lat and lon need to multiplied with 1000000. i couldn’t find why. i don’t think its because of the version of android. anyone have any idea?

Answer 1

Because the MapView uses microdegress for its units so you need to multiply by 1e6. Otherwise you show up off the coast of Africa – basically lat long of approximately 0,0

From the documentation on GeoPoint:

An immutable class representing a pair of latitude and longitude, stored as integer numbers of microdegrees.

Don’t know why the emulator is working – it shouldn’t.