ios - NSLocationWhenInUseUsageDescription 错误一直显示

Question

我尝试在我的项目中实现 MapKit 和 CoreLocation。不幸的是，错误不断出现

This app has attempted to access privacy-sensitive data without a usage description. The app's Info.plist must contain an NSLocationWhenInUseUsageDescription key with a string value explaining to the user how the app uses this data

所以这是我的代码和 info.plist

import Foundation
import CoreLocation
import MapKit

class ViewController: UITabBarController, CLLocationManagerDelegate{

    let locationManager: CLLocationManager = CLLocationManager()

    @IBAction func backBarButton(_ sender: Any) {
        self.dismiss(animated: true, completion:nil)
    }


    override func viewDidLoad() {
        super.viewDidLoad()

        locationManager.delegate = self
        locationManager.requestWhenInUseAuthorization()
        locationManager.startUpdatingLocation()
    }
}

以源代码info.plist形式打开

<key>NSLocationWhenInUseUsageDescription</key>
    <string>accept to get location</string>
    <key>NSLocationAlwaysAndWhenInUseUsageDescription</key>
    <string>description</string>
    <key>NSLocationAlwaysUsageDescription</key>
    <string>description</string>
    <key>NSLocationUsageDescription</key>
    <string>description</string>

打开 .plist 作为属性 View

I tried to create a new project and it works smoothly, however when I tried to implement this on my existing project it doesn't work.

Answer 1

从 iOS 11 开始，您不能在不提供“使用时”的情况下请求“始终”:如果您仅设置隐私 – 位置始终使用说明，它不会出现，并且您会收到错误消息“信息。 plist 必须同时包含 NSLocationAlwaysAndWhenInUseUsageDescription 和 NSLocationWhenInUseUsageDescription 键……”。在 Xcode 9 beta 中，我必须使用 NSLocationAlwaysAndWhenInUseUsageDescription 键； Xcode 不会选择匹配的私钥。

位置经理要求“始终”:

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