CLLocationManager 未请求用户许可

Question

我正在 Swift 开发一个应用程序，它必须获取用户的 GPS 坐标。我已将密钥（NSLocationWhenInUseUsageDescription 和 NSLocationAlwaysUsageDescription）添加到 info.pList，如下所示：

<key>NSLocationWhenInUseUsageDescription</key>
<string>Location is required to find your coordinates</string>
<key>NSLocationAlwaysUsageDescription</key>
<string>Location is required to find your coordinates</string>

我还在 viewDidLoad 方法中添加了 CoreLocation.framework 并请求授权：

    override func viewDidLoad() {
    super.viewDidLoad()

    var locManager = CLLocationManager()

    locManager.requestWhenInUseAuthorization()

    locManager.startUpdatingLocation()

    if(CLLocationManager.authorizationStatus() == CLAuthorizationStatus.AuthorizedWhenInUse){

            var currentLocation = locManager.location
            longitude = currentLocation.coordinate.longitude
            latitude = currentLocation.coordinate.latitude
            textBox.text = longitude.description + latitude.description

    }
}

正如标题中所说，问题是没有提示用户获得许可，因此位置永远不会更新。

Answer 1

首先添加这一行

locManager.delegate = 自己；

override func viewDidLoad() {
super.viewDidLoad()

locManager.delegate = self;
locManager.requestWhenInUseAuthorization()

locManager.startUpdatingLocation()

if(CLLocationManager.authorizationStatus() == CLAuthorizationStatus.AuthorizedWhenInUse){

        var currentLocation = locManager.location
        longitude = currentLocation.coordinate.longitude
        latitude = currentLocation.coordinate.latitude
        textBox.text = longitude.description + latitude.description

}

比在你的 class 添加 CLLocationManagerDelegate 例子

  class ViewController: UIViewController, CLLocationManagerDelegate

终于改变范围

var locManager = CLLocationManager()

例如

class ViewController: UIViewController ,CLLocationManagerDelegate{
  var locManager = CLLocationManager()
  override func viewDidLoad() {
  ...

Answer 2

将您的 locManager 作为 ViewController 的属性，而不是局部变量。

class YourViewController {
    var locManager: CLLocationManager!

    override func viewDidLoad() {

        locManager = CLLocationManager()
        locManager.requestWhenInUseAuthorization()
        locManager.startUpdatingLocation()
        ...
    }
}

CLLocationManager 未请求用户许可

CLLocationManager not requesting permission from user

cllocationmanager

ios

swift