public async void CreatePinTile(ArcGISPortalItem portalItem, Rect tileProptRect)
{
//string nav = string.Format(@"arcgis://www.arcgis.com/sharing/rest/content/items/{0}/data", portalItem.Id);
string nav = string.Format(@"arcgis:{0}/sharing/rest/content/items/{1}/data", App.OrganizationUrl, portalItem.Id);
IsPinningTile = true;
await TileService.CreateSecondaryTileFromWebImage(portalItem.Title, portalItem.Id,
portalItem.ThumbnailUri, tileProptRect, nav);
IsPinningTile = false;
}
