ios – 快速查找iPhone的指南针方向

class ViewController: UIViewController,CLLOCATIOnManagerDelegate {

    var lm:CLLOCATIOnManager!

    override func viewDidLoad() {
        super.viewDidLoad()

        lm = CLLOCATIOnManager()
        lm.delegate = self

        lm.startupdatingheading()
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

    func LOCATIOnManager(manager: CLLOCATIOnManager!,didupdateheading newheading: CLheading!) {
        println(newheading.magneticheading)
    }
}

您可以从https://developer.apple.com/library/ios/documentation/CoreLocation/Reference/CLHeading_Class/获取更多信息