Unable to connect to Microsoft band from Background Task

Question

I'm using MS Band SDK version 1.3.10518, when I try to init the band client from Background Task I got:

BACKGROUNDTASKHOST.EXE' has exited with code 1

The crash happens after the following line of code:

Dim bands = Await Microsoft.Band.BandClientManager.Instance.GetBandsAsync()

I'm able to connect to the band from the main application on windows phone 8.1 developer preview.

Band Build Version: 10.3.3213.0 09 R

Answer 1

I found the solution related to Await in the Sub Run, the solution consists of using : taskInstance.GetDeferral

Public Async Sub Run(taskInstance As Background.IBackgroundTaskInstance) Implements Background.IBackgroundTask.Run
        Dim deferral = taskInstance.GetDeferral
        Dim bands = Await Microsoft.Band.BandClientManager.Instance.GetBandsAsync
          'Other work ...
            End Using
       deferral.Complete()
    End Sub

In addition you need to get user consent from the main application as follow:

bandClient.SensorManager.HeartRate.GetCurrentUserConsent

Thanks for: HttpClient GetAsync fails in background task on Windows 8