Ready for another really useful code snippet? 😀

This time its few lines about the prevention of the lockscreen appearance. Everyone knows about it, but not everyone is really sure how to use it and what are the consequences of its use.

First things first, lets learn how to use it.


Everything we need here is only one property, the UserIdleDetectionMode of the current phone application service. It can be set to either enabled or disabled, and is always recommended to store its current state before you change it, so that you can set it back to whatever value it had before you started messing with it. This is best done  by using a private variable in your App.xaml.cs. Launching and activating events should be used to store the original setting prior changing it to the mode you want, and deactivating and closing events for setting the original setting back.

 

private void Application_Launching(object sender, LaunchingEventArgs e)
{
    _originalMode =PhoneApplicationService.Current.UserIdleDetectionMode;
    PhoneApplicationService.Current.UserIdleDetectionMode= IdleDetectionMode.Disabled;
}

private void Application_Activated(object sender, ActivatedEventArgs e)
{
    _originalMode = PhoneApplicationService.Current.UserIdleDetectionMode;
   PhoneApplicationService.Current.UserIdleDetectionMode= IdleDetectionMode.Disabled; 
}

private void Application_Deactivated(object sender, DeactivatedEventArgs e)
{
   PhoneApplicationService.Current.UserIdleDetectionMode = _originalMode ;
}

 private void Application_Closing(object sender, ClosingEventArgs e)
{
    Microsoft.Phone.Shell.PhoneApplicationService.Current.UserIdleDetectionMode = _originalMode ;
}

And that’s it.. I’ve set the mode to disabled in the code snippet but you could set it to enabled it it suits your needs..

In the end, it is important to be very careful with switching this property of, as it could drain your battery in matter of hours as your app will never be deactivated by a lockscreen.. please take some time to examine the important notes on this page before you start playing with it.

Leave a Reply

Your email address will not be published. Required fields are marked *