尝试获取在 swift 2 中运行的简单 compass 应用程序的基础知识，使用 xcode 7 并在 ios 模拟器中进行测试。
我似乎无法获取标题信息。
我的应用目前可以很好地打印 GeoLocation 数据，但不打印航向数据。
ViewController.swift 的内容:
import UIKit
import CoreLocation
class ViewController: UIViewController, CLLocationManagerDelegate{
var lm = CLLocationManager()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
lm.desiredAccuracy=kCLLocationAccuracyBest
lm.delegate = self
lm.requestWhenInUseAuthorization()
lm.startUpdatingHeading()
lm.startUpdatingLocation()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func locationManager(manager: CLLocationManager, didUpdateHeading newHeading: CLHeading) {
print(newHeading)
}
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]){
print(locations)
}
}
我还将其添加到我的 Info.plist 文件中，并将 CoreLocation 添加到我喜欢的库中。
<key>NSLocationAlwaysUsageDescription</key>
<string>Lemmie have your location</string>
<key>NSLocationWhenInUseUsageDescription</key>
<string>Gimmie</string>
示例控制台输出如下所示:
[<+37.33761534,-122.03479147> +/- 5.00m (speed 5.75 mps / course 271.71) @ 4/26/16, 1:31:07 AM British Summer Time]
[<+37.33761751,-122.03485278> +/- 5.00m (speed 5.32 mps / course 272.27) @ 4/26/16, 1:31:08 AM British Summer Time]
[<+37.33762005,-122.03491577> +/- 5.00m (speed 5.50 mps / course 272.11) @ 4/26/16, 1:31:09 AM British Summer Time]
[<+37.33762244,-122.03497889> +/- 5.00m (speed 5.52 mps / course 271.42) @ 4/26/16, 1:31:10 AM British Summer Time]
[<+37.33762300,-122.03504341> +/- 5.00m (speed 5.52 mps / course 270.29) @ 4/26/16, 1:31:11 AM British Summer Time] ...
最佳答案
我认为在模拟器中运行时没有航向信息可用。我测试了您的代码，它在我的 iPhone 6 上运行良好。
关于ios - 无法在 ios9 上的 swift2 中获取航向数据(用于 compass 应用程序)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/36853461/