@class NSString, NSObject, NSHashTable; @protocol OS_dispatch_source; @interface PKUIForegroundActiveArbiter : NSObject { BOOL _foreground; BOOL _enteringForeground; BOOL _enteringForegroundExpired; BOOL _active; struct { BOOL foreground; BOOL foregroundActive; } _foregroundActiveState; unsigned int _deactivationReasons; NSHashTable *_observers; NSHashTable *_deactivationObservers; unsigned long long _backgroundTaskIdentifier; NSObject *_enteringForegroundTimeout; struct os_unfair_lock_s { unsigned int _os_unfair_lock_opaque; } _lock; } @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; + (id)sharedInstance; + (BOOL)isBackgroundedForReasons:(unsigned int)a0; + (BOOL)isDeactivedForReasons:(unsigned int)a0; - (void)didBecomeActive; - (void)willResignActive; - (id)init; - (void)dealloc; - (struct { BOOL x0; BOOL x1; })registerObserver:(id)a0; - (id)_init; - (void)didEnterBackground; - (void)unregisterObserver:(id)a0; - (void).cxx_destruct; - (void)willTerminate; - (void)unregisterDeactivationObserver:(id)a0; - (void)_beginEnteringForegroundTimer; - (void)_didRemoveDeactivationReasonNotification:(id)a0; - (void)_updateForegroundActiveWithEnteringForegroundPolicy:(long long)a0; - (void)_willAddDeactivationReasonNotification:(id)a0; - (unsigned int)registerDeactivationObserver:(id)a0; - (void)willEnterForegroundPostlude; - (void)willEnterForegroundPrelude; @end