Android Open Source - unicef_gis_mobile Location Service

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License

The source code is released under:

MIT License

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Java Source Code

package org.unicef.gis.infrastructure;
//w  w w  . j  a v  a 2  s .c  om
import android.content.Context;
import android.location.Location;

import com.google.android.gms.location.LocationClient;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;

public class LocationService implements LocationListener {
  // Milliseconds per second
    private static final int MILLISECONDS_PER_SECOND = 1000;
    // Update frequency in seconds
    public static final int UPDATE_INTERVAL_IN_SECONDS = 5;
    // Update frequency in milliseconds
    private static final long UPDATE_INTERVAL = MILLISECONDS_PER_SECOND * UPDATE_INTERVAL_IN_SECONDS;
    // The fastest update frequency, in seconds
    private static final int FASTEST_INTERVAL_IN_SECONDS = 1;
    // A fast frequency ceiling in milliseconds
    private static final long FASTEST_INTERVAL = MILLISECONDS_PER_SECOND * FASTEST_INTERVAL_IN_SECONDS;
    
    private LocationClient locationClient;
    private LocationRequest locationRequest;
    
    private final ILocationServiceConsumer consumer;
    
    public LocationService(Context context, ILocationServiceConsumer consumer) {      
      this.consumer = consumer;
      
      locationRequest = LocationRequest.create();
    locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
    locationRequest.setInterval(UPDATE_INTERVAL);
    locationRequest.setFastestInterval(FASTEST_INTERVAL);

    locationClient = new LocationClient(context, consumer, consumer);
    }

  public void start() {
    locationClient.connect();
  }

  public void stop() {
    if (locationClient.isConnected())
      locationClient.removeLocationUpdates(this);
    
    locationClient.disconnect();
  }

  @Override
  public void onLocationChanged(Location location) {
    consumer.onLocationChanged(location);
  }

  public void playServicesConnected() {
    locationClient.requestLocationUpdates(locationRequest, this);
  }

  public void playServicesDisconnected() {
    locationClient.connect();
  }
}

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