async void TripsLoaded(object sender, RoutedEventArgs e)
{
var list = (ListViewBase)sender;
var item = TripData.FromId(defaultId);
if (item != null)
{
// Perform a connected animation to make the page transition smoother.
list.ScrollIntoView(item);
var animation = ConnectedAnimationService.GetForCurrentView().GetAnimation("drillout");
if (animation != null)
{
await list.TryStartConnectedAnimationAsync(animation, item, "MainTile");
}
}
}
protected override async void OnNavigatedTo(NavigationEventArgs e)
{
// Handle the events from the Back button, but do not show it.
systemNavigationManager = SystemNavigationManager.GetForCurrentView();
systemNavigationManager.BackRequested += OnBackRequested;
// Parse the URI query parameters. They tell us what to load.
var decoder = new WwwFormUrlDecoder((string)e.Parameter);
Trip = TripData.FromId(GetDecoderField(decoder, "id"));
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("Trip"));
if (Trip == null)
{
// Invalid trip.
return;
}
if (!int.TryParse(GetDecoderField(decoder, "todo"), out previousSelectedIndex))
{
previousSelectedIndex = -1;
}
// If applicable, perform a connected animation to make the page transition smoother.
var animationService = ConnectedAnimationService.GetForCurrentView();
var animation = animationService.GetAnimation("drillin");
if (animation != null)
{
animation.TryStart(HeroGrid);
}
// Update the title of the view to match the trip the user is looking at.
ApplicationView.GetForCurrentView().Title = Trip.Title;
// Generate a UserActivity that says that the user is looking at this trip.
var channel = UserActivityChannel.GetDefault();
string activityId = $"trip?id={Trip.Id}";
var activity = await channel.GetOrCreateUserActivityAsync(activityId);
// The system uses this URI to resume the activity.
activity.ActivationUri = new Uri($"{App.ProtocolScheme}:{activityId}");
// Describe the activity.
activity.VisualElements.DisplayText = Trip.Title;
activity.VisualElements.Description = Trip.Description;
// Build the adaptive card JSON with the helper classes in the NuGet package.
// You are welcome to generate your JSON using any library you like.
var card = new AdaptiveCard();
card.BackgroundImage = Trip.ImageSourceUri;
card.Body.Add(new AdaptiveTextBlock(Trip.Title)
{
Size = AdaptiveTextSize.Large, Weight = AdaptiveTextWeight.Bolder
});
card.Body.Add(new AdaptiveTextBlock(Trip.Description));
var adaptiveCardJson = card.ToJson();
// Turn the JSON into an adaptive card and set it on the activity.
activity.VisualElements.Content = AdaptiveCardBuilder.CreateAdaptiveCardFromJson(adaptiveCardJson);
// Save it to the activity feed.
await activity.SaveAsync();
// Start a session. This tels the system know that the user is engaged in the activity right now.
this.activitySession = activity.CreateSession();
// Subscribe to the UserActivityRequested event if the system supports it.
if (ApiInformation.IsEventPresent(typeof(UserActivityRequestManager).FullName, "UserActivityRequested"))
{
activityRequestManager = UserActivityRequestManager.GetForCurrentView();
activityRequestManager.UserActivityRequested += OnUserActivityRequested;
}
}