Question

我做了很多关于如何使用Swift和iOS8使位置服务正常工作的研究。我知道有很多线程描述了常见的陷阱，但没有任何对我有用。

这是我的视图控制器的代码：

import UIKit

class ViewController: UIViewController, GMSMapViewDelegate, CLLocationManagerDelegate {

//#2
var gmaps: GMSMapView?

let locationManager = CLLocationManager()

required init(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)
}

override func viewDidLoad() {
    super.viewDidLoad()

    var target: CLLocationCoordinate2D = CLLocationCoordinate2D(latitude: 51.6, longitude: 17.2)
    var camera: GMSCameraPosition = GMSCameraPosition(target: target, zoom: 6, bearing: 0, viewingAngle: 0)

    gmaps = GMSMapView(frame: CGRectMake(0, 0, self.view.bounds.width, self.view.bounds.height))
    if let map = gmaps? {
        map.camera = camera
        map.delegate = self

        self.view.addSubview(gmaps!)

        map.animateToZoom(10)
    }

    locationManager.delegate = self
    locationManager.desiredAccuracy = kCLLocationAccuracyBest

    locationManager.requestWhenInUseAuthorization()
    locationManager.startUpdatingLocation()
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

func locationManager(manager: CLLocationManager!, didChangeAuthorizationStatus status: CLAuthorizationStatus) {
    if status == .AuthorizedWhenInUse {
        locationManager.startUpdatingLocation()

        if let map = gmaps? {
            map.myLocationEnabled = true
            map.settings.myLocationButton = true
        }
    }
}

func locationManager(manager: CLLocationManager!, didUpdateLocations locations: [AnyObject]!) {
    if let location = locations.first as? CLLocation {
        if let map = gmaps? {
            map.camera = GMSCameraPosition(target: location.coordinate, zoom: 15, bearing: 0, viewingAngle: 0)

            locationManager.stopUpdatingLocation()
        }
    }
}
}

在我的信息plist中，我设置了密钥NSLocationAlwaysUsageDescription，NSLocationWhenInUseUsageDescription和隐私 - 位置使用说明。我还将CoreLocation。框架添加到我的链接框架和库中。

但我仍然没有弹出一个询问用户位置权限的弹出窗口。没有错误，但也没有其他事情发生： - （

Answer 1

您应该检查是否已经为您的应用授予了权限，如果是，请删除该权限（iOS设置应用，隐私）。

另一个建议是从模拟器/设备中完全卸载应用程序。

以下是我的appDelegate的代码段，它使用requestAlwaysAuthorization，但这不应该有所作为：

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool {
    // intialize locationManager
    locationManager.delegate = self
    locationManager.activityType = CLActivityType.Fitness
    locationManager.distanceFilter = 10   // 10m
    locationManager.requestAlwaysAuthorization()

    // get current location
    if CLLocationManager.authorizationStatus() == CLAuthorizationStatus.Authorized {
        locationManager.startUpdatingLocation()
    }
}

func locationManager(manager: CLLocationManager!, didChangeAuthorizationStatus status: CLAuthorizationStatus) {
    if status == .Authorized {
        locationManager.startUpdatingLocation()
    }
}

func locationManager(manager: CLLocationManager!, didUpdateLocations locations: [AnyObject]!) {
    ...
}

这是在Info.plist：

<key>NSLocationAlwaysUsageDescription</key>
<string>No tracking without your permission</string>

Answer 2

我也遇到CLLocationManager问题。如果状态更改为NotDetermined，则需要请求访问权限。例如：

private var isInitalized = false
private func initLocationManagerIfNescessary() {
    if isInitalized { return }
    isInitalized = true

    locationManager = CLLocationManager()
    locationManager.delegate = self
    // locationManager.locationServicesEnabled
    locationManager.desiredAccuracy = kCLLocationAccuracyBest

    let Device = UIDevice.currentDevice()
    let iosVersion = NSString(string: Device.systemVersion).doubleValue
    let iOS8 = iosVersion >= 8
    if iOS8 {
        //locationManager.requestAlwaysAuthorization() // add in plist NSLocationAlwaysUsageDescription
        locationManager.requestWhenInUseAuthorization() // add in plist NSLocationWhenInUseUsageDescription
    } else {
        locationManager.startUpdatingLocation()
    }
}

internal func locationManager(manager: CLLocationManager!,
    didChangeAuthorizationStatus status: CLAuthorizationStatus) {
    switch status {
    case CLAuthorizationStatus.AuthorizedWhenInUse:
        locationManager.startUpdatingLocation()
    case CLAuthorizationStatus.NotDetermined:
        // After first request status may be not autorized, do request access again
        locationManager.requestWhenInUseAuthorization()
    default: break
    }
}

Answer 3

我将NSLocationWhenInUseUsageDescription放在Test .plist文件中。

使用NSLocationWhenInUseUsageDescription无法使用Swift和iOS8获取位置服务

3 个答案: