title: Xamarin ContentResolver/CursorLoader access in non-Activity
body: <p>is it possible to access a Contentresolver when there is no activity (for example when i am trying to access it from a service)?</p>
  
  <p>I have tried stuff with "Android.App.Context" and "Android.App.Activity" but without success. </p>
  
  <p>Here is the Contentprovider i am trying to acccess (with an activity):</p>
  
  <pre><code>class ReceiveCallState : BroadcastReceiver
  
     public void AccessCallLog() 
     { 
        Android.Net.Uri uri = CallLog.ContentUri;
  
        string[] projection = {
                         CallLog.Calls.CachedName,
                         CallLog.Calls.Duration
  
                        };
  
         var cr = new CursorLoader(activity, uri, projection, null, null, null);
         var cursor = (ICursor)cr.LoadInBackground();
      }
  }
  </code></pre>
  
  <p>And i would like to do this same call but without the activity object (or to somehow retrive the activity when it is not explicitly there)</p>
  
  <p>edited: code. Added class from which is being inherited
  kind regards</p>