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Android simple location service
package com.my.package.services;
import android.app.Service;
import android.content.Intent;
import android.location.Location;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesClient.ConnectionCallbacks;
import com.google.android.gms.common.GooglePlayServicesClient.OnConnectionFailedListener;
import com.google.android.gms.location.LocationClient;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
public class LocationService extends Service implements LocationListener, ConnectionCallbacks, OnConnectionFailedListener {
private static final String TAG = LocationService.class.getSimpleName();
public static final String BROADCAST_ACTION = "com.my.package.LOCATION_UPDATE";
// Milliseconds per second
private static final int MILLISECONDS_PER_SECOND = 1000;
// Update frequency in seconds
public static final int UPDATE_INTERVAL_IN_SECONDS = 60;
// 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 = 40;
// A fast frequency ceiling in milliseconds
private static final long FASTEST_INTERVAL = MILLISECONDS_PER_SECOND * FASTEST_INTERVAL_IN_SECONDS;
private LocationClient locationClient;
@Override
public void onCreate() {
super.onCreate();
Log.d(TAG, "Location service created…");
locationClient = new LocationClient(this, this, this);
locationClient.connect();
}
private void clearLocationData() {
locationClient.disconnect();
if (locationClient.isConnected()) {
locationClient.removeLocationUpdates(this);
}
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onDestroy() {
super.onDestroy();
Log.d(TAG, "Location service destroyed…");
clearLocationData();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.d(TAG, "Calling command…");
return START_STICKY;
}
@Override
public void onConnected(Bundle bundle) {
Log.d(TAG, "Location Callback. onConnected");
Location currentLocation = locationClient.getLastLocation();
// Create the LocationRequest object
LocationRequest locationRequest = LocationRequest.create();
// Use high accuracy
locationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
// Set the update interval to 5 seconds
locationRequest.setInterval(UPDATE_INTERVAL);
// Set the fastest update interval to 1 second
locationRequest.setFastestInterval(FASTEST_INTERVAL);
locationClient.requestLocationUpdates(locationRequest, this);
onLocationChanged(currentLocation);
}
@Override
public void onLocationChanged(Location location) {
Log.d(TAG, "onLocationChanged");
Log.d(TAG, "LOCATION: " + location.getLatitude() + ":" + location.getLongitude());
Intent broadcast = new Intent();
broadcast.setAction(BROADCAST_ACTION);
broadcast.putExtra("latitude", location.getLatitude());
broadcast.putExtra("longitude", location.getLongitude());
sendBroadcast(broadcast);
}
@Override
public void onDisconnected() {
Log.d(TAG, "Location Callback. onDisconnected");
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
Log.d(TAG, "Location Callback. onConnectionFailed");
}
}
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