UCDService.java

package edu.ucdavis.earlybird;

import android.app.AlarmManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.location.Location;
import android.location.LocationManager;
import android.os.IBinder;

/**
 * Request location ONCE per WAKE_PERIOD_IN_MILLI.
 */
public class UCDService extends Service {

	public static final long LOCATION_PERIOD_IN_MILLI = 15 * 60 * 1000;
	public static final String ACTION_GET_LOCATION = "edu.ucdavis.earlybird.GET_LOCATION";
	private LocationManager mLocationManager;
	private AlarmManager mAlarmManager;
	private LocationUpdateReceiver mAlarmReceiver;
	private PendingIntent locationIntent;
	private PendingIntent uploadIntent;

	@Override
	public IBinder onBind(final Intent intent) {
		throw new IllegalStateException("Not implemented.");
	}

	@Override
	public void onCreate() {
		super.onCreate();

		ProfilingUtil.log(this, "onCreate");
		mLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
		mAlarmManager = (AlarmManager) getSystemService(Service.ALARM_SERVICE);

		mAlarmReceiver = new LocationUpdateReceiver();
		final IntentFilter filter = new IntentFilter();
		filter.addAction(ACTION_GET_LOCATION);
		registerReceiver(mAlarmReceiver, filter);

		final Intent intent = new Intent(ACTION_GET_LOCATION);
		locationIntent = PendingIntent.getBroadcast(this, 0, intent, 0);
		mAlarmManager.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(), LOCATION_PERIOD_IN_MILLI,
				locationIntent);

		// Upload Service
		final Intent i = new Intent(UploadReceiver.ACTION_UPLOAD_PROFILE);
		uploadIntent = PendingIntent.getBroadcast(this, 0, i, 0);
		mAlarmManager.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(), 12 * 60 * 60 * 1000,
				uploadIntent);
	}

	@Override
	public void onDestroy() {
		mAlarmManager.cancel(locationIntent);
		unregisterReceiver(mAlarmReceiver);
		super.onDestroy();
	}

	private final class LocationUpdateReceiver extends BroadcastReceiver {

		@Override
		public void onReceive(final Context context, final Intent intent) {
			if (mLocationManager == null) return;
			ProfilingUtil.log(context, "AlarmReceiver");
			final String provider = LocationManager.NETWORK_PROVIDER;
			if (mLocationManager.isProviderEnabled(provider)) {
				final Location location = mLocationManager.getLastKnownLocation(provider);
				if (location != null) {
					ProfilingUtil.profile(UCDService.this, ProfilingUtil.FILE_NAME_LOCATION, location.getTime() + ","
							+ location.getLatitude() + "," + location.getLongitude() + "," + location.getProvider());
					ProfilingUtil.log(context,
							location.getTime() + "," + location.getLatitude() + "," + location.getLongitude() + ","
									+ location.getProvider());
				}
			}
		}
	}

}