startDeviceMotionUpdates(using:)
Starts device-motion updates using a reference frame but without a block handler.
Declaration
func startDeviceMotionUpdates(using referenceFrame: CMAttitudeReferenceFrame)Parameters
- referenceFrame:
A constant identifying the reference frame to use for device-motion updates. It’s your responsibility to specify a reference frame that’s available on the current device. Call Availableattitudereferenceframes() to determine which reference frames are currently available.
Discussion
You can get the latest device-motion data through the deviceMotion property. You must call stopDeviceMotionUpdates() when you no longer want your app to process device-motion updates.