Ios Swift locationManager.requestWhenInUseAuthorization() 不提示用户

locationManager.requestWhenInUseAuthorization()

在用户按下按钮但不显示任何提示时调用.

以下是我的完整代码

import SwiftUI
import CoreLocation



struct ContentView: View {
    @ObservedObject var distanceTracker = DistanceTracker();
    var body: some View {

        Button(action: distanceTracker.enableLocServices){
            Text("Enable Location")
        }
        
    }


}



struct ContentView_Previews: PreviewProvider {

    static var previews: some View {

        ContentView()

    }

}


import CoreLocation

class DistanceTracker: NSObject, ObservableObject, CLLocationManagerDelegate {
    
    let locationManager = CLLocationManager()
    var startLocation: CLLocation!
    var lastLocation: CLLocation!
    @Published var traveledDistance = 0.0
    
    override init() {
        super.init()
        locationManager.delegate = self
    }
    
    func enableLocServices(){
        locationManager.requestWhenInUseAuthorization()
        print("bruh")
    }
    
    func locationManagerDidChangeAuthorization(_ manager: CLLocationManager) {
        switch manager.authorizationStatus {
        case .notDetermined:
            print("Location permission not asked for yet")

        case .restricted:
            print("Location usage is restricted (perhaps by parental controls or some other restriction)")
        case .denied:
            print("Location permission denied by user")
        case .authorizedAlways:
            print("Location permission granted for background and foreground use")
        case .authorizedWhenInUse:
            print("Location permission granted for foreground use only")
        @unknown default:
            print("An unknown authorization status received")
        }
    }
}

按下按钮时，它会打印"breh".编辑:另外，打印的状态是"尚未请求位置权限"

NSLocationAlwaysAndWhenInUseUsageDescription and NSLocationWhenInUseUsageDescription are both added to the info section.

手表和手机上的定位服务都已启用(这是一款仅限WatchOS的应用程序，但无论如何，我无法让它在iOS上运行)，而且之前的许可并未被拒绝.我怎么才能解决这个问题呢？谢谢!