Here are some more from iOS SDK
Longest Objective-C Method Name: initWithEnableFan:enableAirConditioner:enableClimateControl:enableAutoMode:airCirculationMode:fanSpeedIndex:fanSpeedPercentage:relativeFanSpeedSetting:temperature:relativeTemperatureSetting:climateZone:
Longest C function name: CMMetadataFormatDescriptionCreateWithMetadataFormatDescriptionAndMetadataSpecifications
Longest Enum Constant Name: kCMBufferQueueTrigger_WhenDurationBecomesGreaterThanOrEqualToAndBufferCountBecomesGreaterThan