Android：启用飞行模式时的LocationManager

Question

I am testing the location part of my app with various configurations. In AirPlane mode I don't get any message sent to ILocationListener , good or bad, from the following LocationManager on an Android 2.2. In this case the bestProvider is "network".

How can I determine if there simply is no way to get a location so that I can inform the user? When there is a network or GPS it all works fine.

The code I use ( Mono for Android C#) is:

            var cr = new Criteria ();
            cr.Accuracy = Accuracy.Coarse;
            cr.PowerRequirement = Power.Low;
            cr.AltitudeRequired = false;
            cr.BearingRequired = false;
            cr.SpeedRequired = false;
            cr.CostAllowed = true;
            string serviceString = Context.LocationService;
            locationManager = (LocationManager)GetSystemService (serviceString);
            var bestProvider = locationManager.GetBestProvider (cr, false);
            locationManager.RequestLocationUpdates (bestProvider, 5000, 500f, this);

Answer 1

as this is your Location Listener you can see the state in onProviderEnabled (String provider) , onProviderDisabled (String provider) or onStatusChanged (String provider, int status, Bundle extras) . Read this API for further Information, what each state means

Answer 2

You can not use any kind of Communication like GPS,GPRS in AirPlane Mode. Airplane mode is a setting available on most cell phones, smartphones and other electronic devices that, when engaged, suspends many of the device's signal transmitting functions – thereby disabling the device's capacity to place or receive calls or text messages – while still permitting use of other functions that do not require signal transmission (eg, games, built-in camera, MP3 player).