public static Task <bool> InsertNotificationAsync( GattCharacteristic characteristic, UserNotification userNotification, ApplicationPreference application) { if (userNotification?.AppInfo == null) { return(Task.FromResult(false)); } if (application != null && application.Muted) { return(Task.FromResult(true)); } var xmlNotification = AsteroidHelper.CreateInsertNotificationCommandXml( packageName: userNotification.AppInfo.PackageFamilyName, id: userNotification.Id.ToString(), applicationName: userNotification.AppInfo.DisplayInfo.DisplayName, applicationIcon: (application?.Icon ?? default(ApplicationIcon)).GetId(), summary: userNotification.GetTitle(), body: userNotification.GetBody(), vibrationLevel: application?.Vibration ?? VibrationLevel.None); if (string.IsNullOrWhiteSpace(xmlNotification)) { return(Task.FromResult(false)); } return(characteristic.WriteByteArrayToCharacteristicAsync(Encoding.UTF8.GetBytes(xmlNotification))); }