protected override async void OnLaunched(LaunchActivatedEventArgs e) { ApplicationView.PreferredLaunchWindowingMode = ApplicationViewWindowingMode.PreferredLaunchViewSize; ApplicationView.PreferredLaunchViewSize = new Size { Width = 1056, Height = 790 }; await BitmapCache.ClearCacheAsync(TimeSpan.FromHours(24)); await PhotosDataSource.Load(); await FeaturedControlsDataSource.Load(); var shell = Window.Current.Content as AppShell; if (shell == null) { shell = new AppShell() { Language = Windows.Globalization.ApplicationLanguages.Languages[0] }; NavigationService.Initialize(typeof(App), shell.AppFrame); shell.AppFrame.NavigationFailed += OnNavigationFailed; if (e.PreviousExecutionState == ApplicationExecutionState.Terminated) { //TODO: Load state from previously suspended application } } Window.Current.Content = shell; if (shell.AppFrame.Content == null) { // When the navigation stack isn't restored, navigate to the first page suppressing the initial entrance animation. shell.AppFrame.Navigate(typeof(MainPage), e.Arguments, new SuppressNavigationTransitionInfo()); } Window.Current.Activate(); }