Core Location is a powerful yet simple iOS framework allowing easy access to the iPhone’s GPS. You can access the coordinates of the device with GPS or cell triangulation, compass, and direction and speed of travel.
Apple’s description:
The Core Location framework lets you determine the current location or heading associated with a device. The framework uses the available hardware to determine the user’s position and heading. You use the classes and protocols in this framework to configure and schedule the delivery of location and heading events. You can also use it to define geographic regions and monitor when the user crosses the boundaries of those regions.
In this tutorial you will learn how to access the raw Core Location data, including the iPhone’s GPS coordinates and speed of travel. (more…)
