/// <summary>
/// Versucht Login, ohne einen entsprechenden Dialog zu zu zeigen.
/// </summary>
/// <returns>Ein MobileServiceUser, der awaited werden kann oder null bei Misserfolg.</returns>
internal static async Task<MobileServiceUser> AuthenticateSilent(MobileServiceClient mobileService)
{
LiveAuthClient liveAuthClient = new LiveAuthClient(APIKeys.LiveClientId);
session = (await liveAuthClient.InitializeAsync()).Session;
return await mobileService.LoginWithMicrosoftAccountAsync(session.AuthenticationToken);
}
/// <summary>
/// Login mit einem entsprechenden Dialog.
/// </summary>
/// <returns>Ein MobileServiceUser, der awaited werden kann oder null bei Misserfolg.</returns>
internal async static Task<MobileServiceUser> Authenticate(MobileServiceClient mobileService)
{
LiveAuthClient liveAuthClient = new LiveAuthClient(APIKeys.LiveClientId);
var source = new TaskCompletionSource<MobileServiceUser>();
liveAuthClient.Logout();
var scopes = new string[] { "wl.basic", "wl.offline_access", "wl.signin" };
App.Current.RootVisual.Visibility = System.Windows.Visibility.Collapsed;
try
{
session = (await liveAuthClient.LoginAsync(scopes)).Session;
}
finally
{
App.Current.RootVisual.Visibility = System.Windows.Visibility.Visible;
}
return await mobileService.LoginWithMicrosoftAccountAsync(session.AuthenticationToken);
}