The type of block callback for handling accelerometer data.
SDKs
- iOS 4.0+
- macOS 10.15+
- Mac Catalyst 13.0+
- watchOS 2.0+
Framework
- Core Motion
Declaration
typealias CMAccelerometerHandler = (CMAccelerometerDiscussion
Blocks of type CMAccelerometer are called when there is accelerometer data to process. You pass the block into start as the second argument. Blocks of this type return no value but take two arguments:
accelerometerData An object that encapsulates a
CMAccelerationstructure with fields holding acceleration values for the three axes of movement.errorAn error object representing an error encountered in providing accelerometer updates. If an error occurs, you should stop accelerometer updates and inform the user of the problem. If there is no error, this argument is
nil. Core Motion errors are of theCMErrordomain and theDomain CMErrortype.