ios - iOS 11.2.6 更新后应用程序崩溃

Question

我的 CLLocationManagerDelegate 代码在上次 iOS 更新之前工作正常，但现在崩溃并出现错误 'NSInternalInconsistencyException'，原因:'Delegate 必须响应 locationManager:didUpdateLocations:'

这是我的委托(delegate)的代码(注意:start() 是从我的 ViewController 调用的):

class Location: NSObject, CLLocationManagerDelegate {

    let locationManager = CLLocationManager()

    func start() {
        locationManager.delegate = self

        if locationManager.responds(to: #selector(CLLocationManager.requestAlwaysAuthorization)) {
            locationManager.requestAlwaysAuthorization()
        } else {
            startLocationUpdates()
        }
    }

    func startLocationUpdates() {
        locationManager.allowsBackgroundLocationUpdates = true
        locationManager.distanceFilter = kCLDistanceFilterNone
        locationManager.activityType = .automotiveNavigation
        locationManager.startUpdatingLocation()
        locationManager.requestLocation()
    }

    func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
        if status == .authorizedWhenInUse || status == .authorizedAlways {
            startLocationUpdates()
        }
    }

    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        // snip
    }

    func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
        // snip
    }
}

Answer 1

不确定如何初始化此类、设置委托(delegate)等，但这是我使用的 UserLocation 类。与您的比较。

import Foundation
import CoreLocation

var userLocation: UserLocation?

class UserLocation: NSObject, CLLocationManagerDelegate {

    var launchLocationSet = false

    override init() {
        super.init()
        setupLocationManager()
    }

    public var currentLocation: CLLocation!

    private var locationManager = CLLocationManager()

    private func setupLocationManager() {
        locationManager.desiredAccuracy = kCLLocationAccuracyBest
        locationManager.requestWhenInUseAuthorization()
        locationManager.startUpdatingLocation()
        locationManager.delegate = self
    }

    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        currentLocation = locations.last! as CLLocation!
        if !launchLocationSet {

            NotificationCenter.default.post(name: NSNotification.Name(rawValue: "updateLocation"), object: nil, userInfo: nil)
            launchLocationSet = true

        }
    }

    func currentLatitude() -> CLLocationDegrees {
        return currentLocation.coordinate.latitude
    }

    func currentLongitude() -> CLLocationDegrees {
        return currentLocation.coordinate.longitude
    }
}