title: Getting null pointer when using Xamarin.Forms.Application.Current.Properties with Android AppWidgetProvider
body: <p>I am writing an Android widget using <code>AppWidgetProvider</code>. To store some values (f.e. downloaded JSON data) I am using <code>Xamarin.Forms.Application.Current.Properties</code>.</p>
  
  <p>Unfortunately I am getting a null pointer exception (app crashes) after a while (I guess when the system is killing the application in background).</p>
  
  <p>Because I can't just call <code>LoadApplication(new App())</code> from my <code>AppWidgetProvider</code> instance I am wondering what to do to prevent <code>Xamarin.Forms.Application.Current</code> from being null. Am I doing something wrong here in general? Maybe <code>Xamarin.Forms.Application.Current.Properties</code> is not meant to be used like this.</p>