/// <summary>
/// Invoked when the application is launched normally by the end user. Other entry points
/// will be used such as when the application is launched to open a specific file.
/// </summary>
/// <param name="e">Details about the launch request and process.</param>
protected override async void OnLaunched(LaunchActivatedEventArgs e)
{
#if DEBUG
if (System.Diagnostics.Debugger.IsAttached)
{
this.DebugSettings.EnableFrameRateCounter = true;
}
#endif
AppShell shell = Window.Current.Content as AppShell;
// Do not repeat app initialization when the Window already has content,
// just ensure that the window is active
if (shell == null)
{
// Create a AppShell to act as the navigation context and navigate to the first page
shell = new AppShell();
// Set the default language
shell.Language = Windows.Globalization.ApplicationLanguages.Languages[0];
shell.AppFrame.NavigationFailed += OnNavigationFailed;
if (e.PreviousExecutionState == ApplicationExecutionState.Terminated)
{
//TODO: Load state from previously suspended application
}
}
// Place our app shell in the current Window
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.
var settings = SimpleIoc.Default.GetInstance<ISettingsService>();
var access_token = await settings.ReadItemAsync<string>("access_token");
if (string.IsNullOrEmpty(access_token))
shell.AppFrame.Navigate(typeof(Views.LoginPage), e.Arguments, new Windows.UI.Xaml.Media.Animation.SuppressNavigationTransitionInfo());
else
shell.AppFrame.Navigate(typeof(Views.FriendsPage), e.Arguments, new Windows.UI.Xaml.Media.Animation.SuppressNavigationTransitionInfo());
}
// Ensure the current window is active
Window.Current.Activate();
DispatcherHelper.Initialize();
}
/// <summary>
/// Initializes a new instance of the AppShell, sets the static 'Current' reference,
/// adds callbacks for Back requests and changes in the SplitView's DisplayMode, and
/// provide the nav menu list with the data to display.
/// </summary>
public AppShell()
{
this.InitializeComponent();
this.Loaded += (sender, args) =>
{
Current = this;
this.TogglePaneButton.Focus(FocusState.Programmatic);
};
SystemNavigationManager.GetForCurrentView().BackRequested += SystemNavigationManager_BackRequested;
// If on a phone device that has hardware buttons then we hide the app's back button.
if (ApiInformation.IsTypePresent("Windows.Phone.UI.Input.HardwareButtons"))
{
this.BackButton.Visibility = Visibility.Collapsed;
}
NavMenuList.ItemsSource = navlist;
Messenger.Default.Register<NavigationMessage>(this, message => this.NavigateTo(message));
}
