CoreLocation：CPAS数据响应是invaild
在具有iOS 10.0.2的iPhone 6上，出现以下代码错误：
class ViewController: UIViewController { @IBOutlet weak var startStop: UIButton! var isRunning = false let manager: CMMotionManager = { let manager = CMMotionManager() manager.deviceMotionUpdateInterval = 1/100 return manager }() @IBAction func handleStartStop(_ sender: AnyObject) { if isRunning { stopMotionUpdates() startStop.setTitle("Start", for: .normal) } else { startMotionUpdates() startStop.setTitle("Stop", for: .normal) } isRunning = !isRunning } func startMotionUpdates() { manager.startDeviceMotionUpdates(using: .xTrueNorthZVertical, to: .main) { (data, error) in print("Roll: \(data!.attitude.roll), Pitch: \(data!.attitude.pitch), Yaw: \(data!.attitude.yaw)") } } func stopMotionUpdates() { manager.stopDeviceMotionUpdates() } } 输出：
2016-10-19 07:45:13.865847 CoreMotionTest[562:350766] CoreLocation: CPAS data response was invaild. Roll: -0.0135864792263794, Pitch: 0.00864587532420694, Yaw: 6.47493275587377e-05 Roll: -0.0135915108585011, Pitch: 0.00865699352311076, Yaw: 7.09129926643357e-05 Roll: -0.0135963930210582, Pitch: 0.00867386848019366, Yaw: 8.84424471509634e-05 Roll: -0.0136066048134502, Pitch: 0.00868011794373523, Yaw: 0.000105925819254466 Roll: -0.0136114190872102, Pitch: 0.00867577431915433, Yaw: 0.000117932969705823 Roll: -0.0135948730328641, Pitch: 0.00867657982050841, Yaw: 0.00012968687069689 Roll: -0.0135732480451522, Pitch: 0.00867729811777266, Yaw: 0.000152007924023406 Roll: -0.0135619969691634, Pitch: 0.00868342424259059, Yaw: 0.000163872505991956 Roll: -0.013304139897602, Pitch: 0.00874500976978164, Yaw: 0.000179014630004322 Roll: -0.0133409772363028, Pitch: 0.00887204866716325, Yaw: 0.00018600114405152 Roll: -0.0130968013066843, Pitch: 0.00890815168076916, Yaw: 0.000201127439543817 Roll: -0.0129980717242318, Pitch: 0.00898203106432451, Yaw: 0.00022290167061286 Roll: -0.013058759809209, Pitch: 0.008972000868579, Yaw: 0.000240753238817741 Roll: -0.0130954579972119, Pitch: 0.0089717830946822, Yaw: 0.000258417382421598
任何想法这是什么意思？
这与使用指南针的要求有关。 xMagneticNorthZVertical而xArbitraryZVertical不会。