public async Task ActivateAsync(IActivatedEventArgs activationArgs)
{
bool isLaunch = false;
if (IsInteractive(activationArgs))
{
// Retrieve current user if available
if (activationArgs is IActivatedEventArgsWithUser argsWithUser)
{
CurrentUser = argsWithUser.User;
await ContactHelper.CreateContactFromCurrentUserAsync();
}
// Do not repeat app initialization when the Window already has content,
// just ensure that the window is active
if (Window.Current.Content == null)
{
isLaunch = true;
// Initialize things like registering background task before the app is loaded
await InitializeAsync();
// Create a Frame to act as the navigation context to navigate to the first page
var frame = new Frame();
frame.ContentTransitions = new TransitionCollection();
frame.ContentTransitions.Add(new NavigationThemeTransition());
Window.Current.Content = frame;
NavigationService.MainFrame = frame;
NavigationService.NavigationFailed += OnNavigationFailed;
NavigationService.Navigated += OnNavigated;
if (CurrentView != null)
{
CurrentView.BackRequested += OnBackRequested;
}
}
}
ActivationState activationState = null;
var activationHandler = GetActivationHandlers().FirstOrDefault(h => h.CanHandle(activationArgs));
if (activationHandler != null)
{
activationState = await activationHandler.HandleAsync(activationArgs);
}
activationState = activationState ?? _activationState;
if (IsInteractive(activationArgs))
{
if (isLaunch)
{
NavigationService.Navigate(_view.FullName, activationState, mainFrame: true);
// Ensure the current window is active
Window.Current.Activate();
// Tasks after activation
await StartupAsync();
}
else
{
NavigationService.Navigate(activationState.ViewModel.ToString(), activationState.Parameter);
// Ensure the current window is active
Window.Current.Activate();
}
}
}
public ActivationService(App app, Type view, ActivationState state)
{
_app = app;
_view = view;
_activationState = state;
}