A list of sharing services from which the user can choose.
NSSharingServicePicker class presents a list of sharing services, so that the user can choose a service to share an item. When a service is chosen, the picker automatically executes it, which presents the sharing window.
NSSharingServicePickerDelegate allows customizing the picker’s available services, where it appears, and allows assigning the delegate object for the
Creating a Sharing Service Picker
Display the Sharing Service Picker
Getting and Setting the Delegate
A service that lets users share content with other services, such as social media services, or apps, such as Mail and Safari.