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Version: 1.1 Posted: 2009-07-15 Build Requirements: iPhone SDK 3.0 Runtime Requirements: iPhone OS 3.0 and iPhone 3GS Requires a device with a magnetometer. This sample will run in the Simulator but only one magnetic measurement will be received. Download Sample Code (“Teslameter.zip”, 49.6K) |
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DescriptionThis application implements a Teslameter, a magnetic field detector. It displays the raw x, y, and z magnetometer values, a plotted history of those values, and a computed magnitude (size or strength) of the magnetic field. The use of the Core Location API for getting "heading" data is contained in the TeslameterViewController class. It creates a CLLocationManager object and uses it to get heading by invoking -[CLLocationManager startUpdatingHeading]. It implements the CLLocationManagerDelegate APIs for receiving heading and updates its user interface accordingly. Document Revision History
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