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import android.location.LocationListener; |
import android.location.LocationListener; |
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import android.location.LocationManager; |
import android.location.LocationManager; |
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import android.os.Bundle; |
import android.os.Bundle; |
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import android.os.Handler; |
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import android.os.Message; |
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import android.util.Log; |
import android.util.Log; |
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public class LocationLookup implements LocationListener, GpsStatus.Listener { |
public class LocationLookup implements LocationListener, GpsStatus.Listener { |
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public enum LookupStates { |
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GOTLOCATION, |
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NOPROVIDER, |
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STARTED, |
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IDLE |
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} |
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LocationManager locManager; |
private LocationManager locManager; |
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Context cntx; |
private Context cntx; |
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Handler hndl; |
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Location lastKnownLocation = null; |
private Location savedLocation = null; |
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Location savedLocation = null; |
private int satCount; |
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private boolean hasGps; |
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private LookupStates state; |
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boolean isSearching = false; |
private long startTime; |
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boolean hasGps; |
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public LocationLookup(Context c, Handler h) { |
public LocationLookup(Context c) { |
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state = LookupStates.IDLE; |
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cntx = c; |
cntx = c; |
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hndl = h; |
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} |
} |
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return savedLocation; |
return savedLocation; |
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} |
} |
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public Location getLastKnownLocation() { |
public boolean hasGps() { |
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return lastKnownLocation; |
return hasGps; |
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} |
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public int getSatCount() { |
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return satCount; |
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} |
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public LookupStates getState() { |
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return state; |
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} |
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public long elapsedTime() { |
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long now = android.os.SystemClock.elapsedRealtime(); |
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return now - startTime; |
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} |
} |
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public void locateStations() { |
public void locateStations() { |
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isSearching = true; |
state = LookupStates.STARTED; |
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hasGps = false; |
hasGps = false; |
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locManager = (LocationManager) cntx.getSystemService(Context.LOCATION_SERVICE); |
locManager = (LocationManager) cntx.getSystemService(Context.LOCATION_SERVICE); |
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satCount = 0; |
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startTime = android.os.SystemClock.elapsedRealtime(); |
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List<String> providers = locManager.getProviders(true); |
List<String> providers = locManager.getProviders(true); |
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if (providers.size() > 0) { |
boolean hasProvider = false; |
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for(String provider : providers) { |
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Log.i("Provider", ""+provider); |
for(String provider : providers) { |
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if (provider.equalsIgnoreCase("gps")) { |
if (provider.equals( LocationManager.PASSIVE_PROVIDER)) { |
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locManager.addGpsStatusListener(this); |
continue; |
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hasGps = true; |
} |
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} |
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Log.i("Provider", ""+provider); |
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locManager.requestLocationUpdates(provider, 0, 0, this); |
hasProvider = true; |
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Location tmpLastKnown = locManager.getLastKnownLocation(provider); |
if (provider.equalsIgnoreCase("gps")) { |
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if (tmpLastKnown != null) { |
locManager.addGpsStatusListener(this); |
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saveLastKnownLocation(tmpLastKnown); |
hasGps = true; |
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} |
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} |
} |
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} else { |
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locManager.requestLocationUpdates(provider, 0, 0, this); |
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} |
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if (hasProvider == false) { |
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// message that no suitable provider was found |
// message that no suitable provider was found |
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//hndl.sendEmptyMessage(StationList.NOPROVIDER); |
//hndl.sendEmptyMessage(StationList.NOPROVIDER); |
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hndl.sendEmptyMessage(StationList.LookupStates.NOPROVIDER.ordinal()); |
state = LookupStates.NOPROVIDER; |
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} |
} |
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} |
} |
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@Override |
@Override |
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public void onLocationChanged(Location location) { |
public void onLocationChanged(Location location) { |
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if (isSearching == false) |
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return; |
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Log.i("Location", "Got location fix " + location.getLatitude() + ", " + location.getLongitude() + " accuracy=" + location.getAccuracy() + " provider=" +location.getProvider()); |
Log.i("Location", "Got location fix " + location.getLatitude() + ", " + location.getLongitude() + " accuracy=" + location.getAccuracy() + " provider=" +location.getProvider()); |
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} |
} |
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stopSearch(); |
stopSearch(); |
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hndl.sendEmptyMessage(StationList.LookupStates.GOTLOCATION.ordinal()); |
state = LookupStates.GOTLOCATION; |
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} |
} |
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private void saveLastKnownLocation(Location loc) { |
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if (lastKnownLocation == null) { |
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lastKnownLocation = loc; |
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} else { |
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if (loc.getTime() > lastKnownLocation.getTime()) {//if loc is more recent than saved |
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lastKnownLocation = loc; |
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} |
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} |
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} |
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public void stopSearch() |
public void stopSearch() |
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{ |
{ |
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if (isSearching) { |
if (state == LookupStates.STARTED) { |
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isSearching = false; |
state = LookupStates.IDLE; |
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locManager.removeGpsStatusListener(this); |
locManager.removeGpsStatusListener(this); |
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locManager.removeUpdates(this); |
locManager.removeUpdates(this); |
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} |
} |
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GpsStatus status = locManager.getGpsStatus(null); |
GpsStatus status = locManager.getGpsStatus(null); |
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for (GpsSatellite sat : status.getSatellites()) { |
for (GpsSatellite sat : status.getSatellites()) { |
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count ++; |
count ++; |
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} |
} |
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Message msg = new Message(); |
satCount = count; |
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msg.what = StationList.LookupStates.GPS_SAT_COUNT.ordinal(); |
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msg.arg1 = count; |
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hndl.sendMessage(msg); |
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} |
} |
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} |
} |