iOS Developer Library

Developer

Core Motion Framework Reference

Document Revision History

This table describes the changes to Core Motion Framework Reference.

Date

Notes

2013-09-18

Added new classes for step counting and motion activity.

2011-10-12

Added CMMagnetometerData class, new in iOS 5.0.

2010-04-27

First version of the reference describing the API for handling accelerometer data and other kinds of motion events.