I want to access the device's current location in multiple activities. Currently I'm using Google FusedLocationProvider in one Activity. I'm looking on how to use util/helper class which fetches device's current location to use in different activities. I found one helper classes, but not sure how to use it from an Activity. Please help me in the right direction.
Locator.java
public class Locator implements LocationListener {
static private final String LOG_TAG = "locator";
static private final int TIME_INTERVAL = 100; // minimum time between updates in milliseconds
static private final int DISTANCE_INTERVAL = 1; // minimum distance between updates in meters
static public enum Method {
NETWORK,
GPS,
NETWORK_THEN_GPS
}
private Context context;
private LocationManager locationManager;
private Locator.Method method;
private Locator.Listener callback;
public Locator(Context context) {
super();
this.context = context;
this.locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
}
public void getLocation(Locator.Method method, Locator.Listener callback) {
this.method = method;
this.callback = callback;
switch (this.method) {
case NETWORK:
case NETWORK_THEN_GPS:
Location networkLocation = this.locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (networkLocation != null) {
Log.d(LOG_TAG, "Last known location found for network provider : " + networkLocation.toString());
this.callback.onLocationFound(networkLocation);
} else {
Log.d(LOG_TAG, "Request updates from network provider.");
this.requestUpdates(LocationManager.NETWORK_PROVIDER);
}
break;
case GPS:
Location gpsLocation = this.locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (gpsLocation != null) {
Log.d(LOG_TAG, "Last known location found for GPS provider : " + gpsLocation.toString());
this.callback.onLocationFound(gpsLocation);
} else {
Log.d(LOG_TAG, "Request updates from GPS provider.");
this.requestUpdates(LocationManager.GPS_PROVIDER);
}
break;
}
}
private void requestUpdates(String provider) {
if (this.locationManager.isProviderEnabled(provider)) {
if (provider.contentEquals(LocationManager.NETWORK_PROVIDER)
&& Connectivity.isConnected(this.context)) {
Log.d(LOG_TAG, "Network connected, start listening : " + provider);
this.locationManager.requestLocationUpdates(provider, TIME_INTERVAL, DISTANCE_INTERVAL, this);
} else if (provider.contentEquals(LocationManager.GPS_PROVIDER)
&& Connectivity.isConnectedMobile(this.context)) {
Log.d(LOG_TAG, "Mobile network connected, start listening : " + provider);
this.locationManager.requestLocationUpdates(provider, TIME_INTERVAL, DISTANCE_INTERVAL, this);
} else {
Log.d(LOG_TAG, "Proper network not connected for provider : " + provider);
this.onProviderDisabled(provider);
}
} else {
this.onProviderDisabled(provider);
}
}
public void cancel() {
Log.d(LOG_TAG, "Locating canceled.");
this.locationManager.removeUpdates(this);
}
@Override
public void onLocationChanged(Location location) {
Log.d(LOG_TAG, "Location found : " + location.getLatitude() + ", " + location.getLongitude() + (location.hasAccuracy() ? " : +- " + location.getAccuracy() + " meters" : ""));
this.locationManager.removeUpdates(this);
this.callback.onLocationFound(location);
}
@Override
public void onProviderDisabled(String provider) {
Log.d(LOG_TAG, "Provider disabled : " + provider);
if (this.method == Locator.Method.NETWORK_THEN_GPS
&& provider.contentEquals(LocationManager.NETWORK_PROVIDER)) {
// Network provider disabled, try GPS
Log.d(LOG_TAG, "Requesst updates from GPS provider, network provider disabled.");
this.requestUpdates(LocationManager.GPS_PROVIDER);
} else {
this.locationManager.removeUpdates(this);
this.callback.onLocationNotFound();
}
}
@Override
public void onProviderEnabled(String provider) {
Log.d(LOG_TAG, "Provider enabled : " + provider);
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
Log.d(LOG_TAG, "Provided status changed : " + provider + " : status : " + status);
}
public interface Listener {
void onLocationFound(Location location);
void onLocationNotFound();
}
}
