onLocationChanged does not get called??

by hc » Sat, 07 Mar 2009 13:25:26 GMT


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 Hi,

I have been struggling to get onLocationChanged called, but I'm not
sure it does not.
Here're my code

                criteria = new Criteria();
                criteria.setAccuracy(Criteria.ACCURACY_FINE);
                criteria.setPowerRequirement(Criteria.POWER_LOW);
                criteria.setAltitudeRequired(false);
                criteria.setBearingRequired(false);
                criteria.setSpeedRequired(false);
                criteria.setCostAllowed(true);

                String locationContext = Context.LOCATION_SERVICE;
                locationManager = (LocationManager)context.getSystemService
(locationContext);

                String provider = locationManager.getBestProvider(criteria, 
true);

                Location location = 
locationManager.getLastKnownLocation(provider);
                locationManager.requestLocationUpdates(provider,0 ,
100.0f,locationListener);

and ..... in the methods below, only onStatusChanged is being called,
and not onLocationChanged

     private final LocationListener locationListener = new
LocationListener(){
        public void onLocationChanged(Location location)
        {
                Log.d("onLocationChanged","update now");
        }

        public void onProviderDisabled(String provider)
        {
                Log.d("onProviderDisabled",provider.toString());
        }

        public void onProviderEnabled(String provider){
                Log.d("onProviderEnabled",provider.toString());
        }
        public void onStatusChanged(String provider, int status, Bundle
extras){
                Log.d("Provider status changed", provider.toString());
        }
    };

here are permissions from my manifest

    <uses-permission
android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission
android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission
android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission
android:name="android.permission.ACCESS_MOCK_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_GPS" />
    <uses-permission
android:name="android.permission.READ_PHONE_STATE"/>
    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.CAMERA" />


and I missing something ?
I have tried to add this line below requestLocationUpdate

Location location = locationManager.getLastKnownLocation(provider);
because I thought this might get me the last location just requested
from the requestLocationUpdate in the line before it, but it does not
help to retrieve the current location. It still retrieves the previous
location
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onLocationChanged does not get called??

by hc » Sat, 07 Mar 2009 14:09:37 GMT


 an someone correct me if I'm wrong,

I checked the status in onStatusChanged. It shows
TEMPORARILY_UNAVAILABLE for my GPS.
Makes sense since I'm indoor. But if I'm indoor, I want it to change
the provider to network.

So here's how I'm doing it.
1) When I try to location myself, I will use GPS as my provider.
2) if GPS signal is available, onLocationChanged will be called, and
that's done!
3) if onLocationChanged is not called, but onStatusChanged is called,
I check the status or my provider
4) if status of my GPS provider showed in onStatusChanged is
TEMPORARILY_UNAVAILABLE, then I'll change my provider to network
5) to change my provider from GPS to NETWORK, I add the following line
inside onStatusChanged

location.removeUpdates(locationListener)
location.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,0 ,
100.0f,locationListener);

This seems to be working for me now.. finally.
But I'm wondering if this is the best way to do it. Feels a bit hacky

On Mar 7, 1:25pm, hc <honch...@gmail.com> wrote:
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