Opening a WebAppBuilder with a custom URL?

[DaveK]

Hello! 

Is there any way to edit a URL to open up a Web AppBuilder with a different basemap? Currently I have a public facing application that contains a share widget. Within the share widget I can create URL's to remember layer visibility, zoom into a specific location, or filter specific layers. I'm wondering if there is a way to change the basemap using the URL? Any help is appreciated. 

Thanks! 

[shaylavi]

All  the supported URL parameters are covered in this page - 

https://doc.arcgis.com/en/web-appbuilder/manage-apps/app-url-parameters.htm

To customize the behaviour of the app like you mentioned you need to have it created on the developer edition and then you could change it however you like