public override StartCommandResult OnStartCommand(Intent intent, StartCommandFlags flags, int startId)
{
if (intent.Action.Equals(Constants.ACTION_START_SERVICE))
{
if (isStarted)
{
Log.Info(TAG, "OnStartCommand: The service is already running.");
}
else
{
Log.Info(TAG, "OnStartCommand: The service is starting.");
RegisterForegroundService();
handler.PostDelayed(runnable, Constants.DELAY_BETWEEN_LOG_MESSAGES);
isStarted = true;
}
}
else if (intent.Action.Equals(Constants.ACTION_STOP_SERVICE))
{
Log.Info(TAG, "OnStartCommand: The service is stopping.");
timestamper = null;
StopForeground(true);
StopSelf();
isStarted = false;
}
else if (intent.Action.Equals(Constants.ACTION_RESTART_TIMER))
{
Log.Info(TAG, "OnStartCommand: Restarting the timer.");
timestamper.Restart();
}
// This tells Android not to restart the service if it is killed to reclaim resources.
return(StartCommandResult.Sticky);
}
public override void OnCreate()
{
base.OnCreate();
Log.Info(TAG, "OnCreate: the service is initializing");
timestamper = new UtcTimestamper();
handler = new Handler();
// This Action is only for demonstration purposes.
runnable = new Action(() =>
{
if (timestamper == null)
{
Log.Wtf(TAG, "Something is wrong with the timestamper");
}
else
{
string msg = timestamper.GetFormattedTimestamp();
Log.Debug(TAG, msg);
Intent i = new Intent(Constants.NOTIFICATION_BROADCAST_ACTION);
i.PutExtra(Constants.BROADCAST_MESSAGE_KEY, msg);
Android.Support.V4.Content.LocalBroadcastManager.GetInstance(this).SendBroadcast(i);
handler.PostDelayed(runnable, Constants.DELAY_BETWEEN_LOG_MESSAGES);
}
});
}
public override void OnDestroy()
{
// We need to shut things down.
Log.Debug(TAG, GetFormattedTimestamp() ?? "The TimeStamper has been disposed.");
Log.Info(TAG, "OnDestroy: The started service is shutting down.");
// Stop the handler.
handler.RemoveCallbacks(runnable);
// Remove the notification from the status bar.
var notificationManager = (NotificationManager)GetSystemService(NotificationService);
notificationManager.Cancel(Constants.SERVICE_RUNNING_NOTIFICATION_ID);
timestamper = null;
isStarted = false;
base.OnDestroy();
}
