void OnUserActivityRequested(UserActivityRequestManager sender, UserActivityRequestedEventArgs e)
{
using (e.GetDeferral())
{
// Generate a user activity that remembers the scroll position.
var scrollViewer = FindScrollViewer(ReaderElement);
var scrollProgress = scrollViewer.ScrollableHeight > 0 ? scrollViewer.ContentVerticalOffset / scrollViewer.ScrollableHeight : 0.0;
// Create user activity session for this window.
var activityId = FormattableString.Invariant($"book?id={BookId}&pos={scrollProgress}");
var activity = new UserActivity(activityId);
activity.ActivationUri = new Uri($"{App.ProtocolScheme}:{activityId}");
activity.VisualElements.DisplayText = Book.Title;
activity.VisualElements.Description = $"{(int)(scrollProgress * 100)}% complete";
var card = new AdaptiveCard();
card.BackgroundImage = Book.ImageUri;
card.Body.Add(new AdaptiveTextBlock(Book.Title)
{
Size = AdaptiveTextSize.Large, Weight = AdaptiveTextWeight.Bolder
});
activity.VisualElements.Content = AdaptiveCardBuilder.CreateAdaptiveCardFromJson(card.ToJson());
e.Request.SetUserActivity(activity);
}
}
void OnUserActivityRequested(UserActivityRequestManager sender, UserActivityRequestedEventArgs e)
{
// The system raises the UserActivityRequested event to request that the
// app generate an activity that describes what the user is doing right now.
// This activity is used to restore the app as part of a Set.
using (e.GetDeferral())
{
// Determine which trip and to-do item the user is currently working on.
var description = Trip.Description;
var index = ToDoListView.SelectedIndex;
if (index >= 0)
{
description = ToDoListView.SelectedItem.ToString();
}
// Generate a UserActivity that says that the user is looking at
// a particular to-do item on this trip.
string activityId = $"trip?id={Trip.Id}&todo={index}";
var activity = new UserActivity(activityId);
// The system uses this URI to resume the activity.
activity.ActivationUri = new Uri($"{App.ProtocolScheme}:{activityId}");
// Describe the activity.
activity.VisualElements.DisplayText = Trip.Title;
activity.VisualElements.Description = 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(description));
var adaptiveCardJson = card.ToJson();
// Turn the JSON into an adaptive card and set it on the activity.
activity.VisualElements.Content = AdaptiveCardBuilder.CreateAdaptiveCardFromJson(adaptiveCardJson);
// Respond to the request.
e.Request.SetUserActivity(activity);
}
}
