In my iOS app, I have a Facebook share button, which opens up a FBSDKShareDialog:
-(IBAction)post:(id)sender{
FBSDKShareLinkContent *content = [[FBSDKShareL
Looks FB changed something on Delegate it when user share the delegate method will run with empty results, so if you are check something in this method to make sure that post posted correctly just remove it
- (void)sharer:(id)sharer didCompleteWithResults:(NSDictionary *)results
and when user cancel share this method will run
- (void)sharerDidCancel:(id)sharer