@class NSMutableDictionary; @interface DMCBackgroundActivityManager : NSObject @property (retain, nonatomic) NSMutableDictionary *activities; + (id)sharedInstance; + (void)cancelActivity:(id)a0; + (void)scheduleOneShotActivity:(id)a0 interval:(double)a1 gracePeriod:(double)a2 callback:(id /* block */)a3; - (id)initPrivate; - (void).cxx_destruct; @end