While sharing an image with a share extension, I am facing an issue. I have done all the steps that enable the app group in both the extension and the container profile. I followed these steps to implement sharing code in the extension.
The error I'm seeing is:
Unable to bootstrap_look_up port with name me.com.companyname.share.gsEvents: unknown error code (1102)
and also
Application me.com.appName is not handling a background URLSession but we still received a signal to deliver pending events
App can share information with its extensions using App Group. App Groups are the shared container which your app and extension can use to share information like User Session, Contacts and can also hold data which is being uploaded to server.
User Session information is required to extension to communicate with server on behalf of logged in user. You can share any kind of extra information using shared container (App Group).
http://muhammadzahidimran.com/2016/12/08/how-to-track-progress-of-an-upload-started-by-share-extension/