/// <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 void OnLaunched(LaunchActivatedEventArgs e)
{
AppFrame rootFrame = Window.Current.Content as AppFrame;
// Do not repeat app initialization when the Window already has content,
// just ensure that the window is active
if (rootFrame == null)
{
// Create a Frame to act as the navigation context and navigate to the first page
rootFrame = new AppFrame();
rootFrame.NavigationFailed += OnNavigationFailed;
// Place the frame in the current Window
Window.Current.Content = rootFrame;
}
// Always restore state from disk.
// To simplify, I'm going to do a bad thing and block the main thread while the disk read happens.
// Since this happens before Window.Current.Activate is called, the splash screen should stay up and the user won't see any weird UI.
try
{
Task restoreTask = restoreStateFromDisk();
restoreTask.Wait();
}
catch (Exception)
{
// A FileNotFoundException is expected if there is no saved state file.
// Ignore the error because we don't have telemetry hooked up yet to log it and we don't want the whole app launch cancelled.
}
if (e.PrelaunchActivated == false)
{
if (rootFrame.Content == null)
{
Type targetPageType = TimeManager.Instance.HasMultipleModes ? typeof(MainPage) : typeof(ConfigurationPage);
// When the navigation stack isn't restored navigate to the first page,
// configuring the new page by passing required information as a navigation
// parameter
rootFrame.Navigate(targetPageType, e.Arguments);
}
// Ensure the current window is active
Window.Current.Activate();
}
}
public AppFrame()
{
this.InitializeComponent();
_instance = this;
}