@interface PhotosUIPrivate.StoryExportActivityPreviewViewController : UIViewController {
    void /* unknown type, empty encoding */ exportActivityItemProvider;
    void /* unknown type, empty encoding */ isExporting;
    void /* unknown type, empty encoding */ storyView;
    void /* unknown type, empty encoding */ storyTraitCollection;
    void /* unknown type, empty encoding */ applicationStateObservation;
    void /* unknown type, empty encoding */ didAppear;
}

- (void)viewDidLayoutSubviews;
- (void)viewDidLoad;
- (id)initWithNibName:(id)a0 bundle:(id)a1;
- (void).cxx_destruct;
- (void)viewDidAppear:(BOOL)a0;
- (void)viewDidDisappear:(BOOL)a0;
- (id)initWithCoder:(id)a0;

@end