/// <summary>
/// Called periodically to get the next departure time
/// </summary>
private void PerformUpdate()
{
// Make sure a non-cached set of TrainTrips is used
TrainTrips.Reset();
trainJourneyRetrieval.GetJourneys(TrainTrips.SelectedTrip);
// The update is now in progress, so report this
Application.Context.SendBroadcast(new Intent(AppWidget.UpdateInProgress));
}
/// <summary>
/// Renders the visual contents of a specific widget contents into a RemoteViews object
/// </summary>
/// <param name="widgetContext">Widget context.</param>
/// <param name="widgetId">Widget identifier.</param>
private RemoteViews RenderWidgetContents(Context context, int widgetId)
{
// Initialise the persistent storage
PersistentStorage.StorageMechanism = new StorageMechanism(context);
PersistentStorage.UseCache = false;
// Create a RemoteView for the widget
RemoteViews widgetView = new RemoteViews(context.PackageName, Resource.Layout.widget);
// Extract the current trip details and display them.
// The trip details and selected trip can be changed independently by the main app so a new set of train trip details need to be read
TrainTrips.Reset();
TrainTrip selectedTrip = TrainTrips.SelectedTrip;
if (selectedTrip != null)
{
widgetView.SetTextViewText(Resource.Id.widgetTrip, string.Format("{0}:{1}", selectedTrip.FromCode, selectedTrip.ToCode));
}
// Extract the next departure time and display it
DateTime departureTime = NextDeparture.DepartureTime;
widgetView.SetTextViewText(Resource.Id.widgetDeparture, departureTime.ToString("HH:mm"));
// Register pending intents for clicking on the displayed fields
RegisterClicks(context, widgetView);
// Show the correct image for the running state of the update service
if (PersistentStorage.GetBoolItem(UpdateInProgressName, false) == true)
{
// An update is actually in progress, so show the progress indicator and hide
// the service status flags
widgetView.SetViewVisibility(Resource.Id.layoutProgressBar, Android.Views.ViewStates.Visible);
widgetView.SetViewVisibility(Resource.Id.imageStart, Android.Views.ViewStates.Gone);
widgetView.SetViewVisibility(Resource.Id.imageStop, Android.Views.ViewStates.Gone);
}
else
{
// Hide the progress indicator and show the servide state
widgetView.SetViewVisibility(Resource.Id.layoutProgressBar, Android.Views.ViewStates.Gone);
if (PersistentStorage.GetBoolItem(UpdateServiceRunningName, false) == true)
{
widgetView.SetViewVisibility(Resource.Id.imageStart, Android.Views.ViewStates.Gone);
widgetView.SetViewVisibility(Resource.Id.imageStop, Android.Views.ViewStates.Visible);
}
else
{
widgetView.SetViewVisibility(Resource.Id.imageStart, Android.Views.ViewStates.Visible);
widgetView.SetViewVisibility(Resource.Id.imageStop, Android.Views.ViewStates.Gone);
}
}
return(widgetView);
}
public override StartCommandResult OnStartCommand(Intent intent, [GeneratedEnum] StartCommandFlags flags, int startId)
{
// Make sure a non-cached set of TrainTrips is used
TrainTrips.Reset();
trainJourneyRetrieval.GetJourneys(TrainTrips.SelectedTrip);
// The update is now in progress, so report this
Application.Context.SendBroadcast(new Intent(AppWidget.UpdateInProgress));
return(StartCommandResult.NotSticky);
}
