How do you implement “follow me” using the MyLocationOverlay class?

问题

I made an application which shows the current location of the user using the MyLocationOverlay class. However, when the user changes his location, the marker is not recentered. How do I implement the "follow me" feature?

I am thinking of making the LocationManager to update as frequently as possible and then calling the animateTo method inside the onLocationChanged method but it seems to be a bad solution. Is there any way of doing it?

回答1:

What I do is extend MyLocationOverlay as an inner class of my MapActivity. Then, I override onLocationChanged and use animateTo on my MapController in that method.

@Override
public synchronized void onLocationChanged(Location location) {
    if (location != null) {
        mapController.animateTo(
                new GeoPoint((int) (location.getLatitude()*1e6),
                             (int) (location.getLongitude()*1e6));
    }
    super.onLocationChanged(location);
}

来源：https://stackoverflow.com/questions/8394867/how-do-you-implement-follow-me-using-the-mylocationoverlay-class