/// <summary>
/// Initializes the singleton application object. This is the first line of authored code
/// executed, and as such is the logical equivalent of main() or WinMain().
/// </summary>
public App()
{
AgentSync.Init(this);
this.Suspending += OnSuspending;
this.UnhandledException += App_UnhandledException;
if (Windows.Foundation.Metadata.ApiInformation.IsTypePresent(nameof(Windows.UI.Xaml.ApplicationRequiresPointerMode)))
{
this.RequiresPointerMode = ApplicationRequiresPointerMode.WhenRequested;
}
}
/// <summary>
/// Initializes the singleton application object. This is the first line of authored code
/// executed, and as such is the logical equivalent of main() or WinMain().
/// </summary>
public App()
{
AgentSync.Init(this);
this.InitializeComponent();
this.RequiresPointerMode = Windows.UI.Xaml.ApplicationRequiresPointerMode.WhenRequested;
this.Suspending += OnSuspending;
this.UnhandledException += App_UnhandledException;
// Initalize the platform object which is the singleton instance to access various services
Platform.Current.Navigation = new NavigationManager();
//Platform.Current.Analytics = new FlurryAnalyticsService("M76D4BWBDRTWTVJZZ27P");
Platform.Current.Logger.CurrentLevel = LogLevels.Information;
this.RequestedTheme = ApplicationTheme.Dark;
// TODO Microsoft.HockeyApp.HockeyClient.Current.Configure("Your-App-ID");
}
public async void Run(IBackgroundTaskInstance taskInstance)
{
#if !DEBUG
// Check if the app is alread in the foreground and if so, don't run the agent
if (AgentSync.IsApplicationLaunched())
{
return;
}
#endif
// Get a deferral, to prevent the task from closing prematurely
// while asynchronous code is still running.
BackgroundTaskDeferral deferral = taskInstance.GetDeferral();
// Initialize the app
await Platform.Current.AppInitializingAsync(InitializationModes.Background);
Platform.Current.Logger.Log(LogLevels.Information, "Starting background task '{0}'...", taskInstance.Task.Name);
CancellationTokenSource cts = new CancellationTokenSource();
taskInstance.Canceled += (sender, reason) =>
{
Platform.Current.Logger.Log(LogLevels.Warning, "Background task '{0}' is being cancelled due to '{1}'...", taskInstance.Task.Name, reason);
// Store info on why this task was cancelled
_info.CancelReason = reason.ToString();
_info.EndTime = DateTime.UtcNow;
// Cancel/dispose the token
cts?.Cancel();
cts?.Dispose();
};
try
{
// Execute the background work
_info.StartTime = DateTime.UtcNow;
await Platform.Current.TimedBackgroundWorkAsync(BackgroundWorkCost.CurrentBackgroundWorkCost, cts.Token);
// Task ran without error
_info.RunSuccessfully = true;
Platform.Current.Logger.Log(LogLevels.Information, "Completed execution of background task '{0}'!", taskInstance.Task.Name);
}
catch (OperationCanceledException)
{
// Task was aborted via the cancelation token
Platform.Current.Logger.Log(LogLevels.Warning, "Background task '{0}' had an OperationCanceledException with reason '{1}'.", taskInstance.Task.Name, _info.CancelReason);
}
catch (Exception ex)
{
// Task threw an exception, store/log the error details
_info.ExceptionDetails = ex.ToString();
Platform.Current.Logger.LogErrorFatal(ex, "Background task '{0}' failed with exception to run to completion: {1}", taskInstance.Task.Name, ex.Message);
}
finally
{
_info.EndTime = DateTime.UtcNow;
// Store the task status information
Platform.Current.Storage.SaveSetting("TASK_" + taskInstance.Task.Name, _info, Windows.Storage.ApplicationData.Current.LocalSettings);
// Shutdown the task
Platform.Current.AppSuspending();
deferral.Complete();
}
}