Reference (Old Docs)
FBSDKSharingDialog
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The common interface for dialogs that initiate sharing.

Extends Protocol:FBSDKSharing
Declared in:FBSDKSharingDialog.h
Instance Methods
canShow

A Boolean value that indicates whether the receiver can initiate a share.

- (BOOL) canShow;
Discussion:

May return NO if the appropriate Facebook app is not installed and is required or an access token is required but not available. This method does not validate the content on the receiver, so this can be checked before building up the content.

Declared In: FBSDKSharingDialog.h
show

Shows the dialog.

- (BOOL) show;
Declared In: FBSDKSharingDialog.h