CMAccelerometerData
A data sample from the device’s three accelerometers.
Declaration
class CMAccelerometerDataOverview
An application accesses CMAccelerometerData objects through the block handler specified as the last parameter of the startAccelerometerUpdates(to:withHandler:) method and through the accelerometerData property, both declared by the CMMotionManager class. The superclass of CMAccelerometerData, CMLogItem, defines a timestamp property that records when the acceleration measurement was taken.