How to Pause without Blocking the UI

Question

I have a click event which causes the phone to vibrate once a button is clicked. This generally works great, except sometimes the vibration doesnt stop until I completely close

Answer 1

You can use asynchrony to prevent blocking the UI. Rather than actually blocking the UI thread you need to schedule an action to happen again 100ms from now. Adding a continutation to a Task.Delay call can do just that:

void newButton_Click(object sender, EventArgs e)
{
    Action navigate = () =>
        this.NavigationService.Navigate(new uri("/NewPage.xaml", UriKind.Relate));
    if (Settings.EnableVibration.Value)  //boolean flag to tell whether to vibrate or not
    {
        VibrateController.Default.Start();
        Task.Delay(100).ContinueWith(t =>
        {
            VibrationController.Default.Stop();
            navigate();
        });
    }
    else
        navigate();
}