Question

我正在尝试使用CoreLocation（一旦获得权限）来获取用户的CLLocationCoordinate2D，以便我可以将该信息传递给Uber深层链接（在我的TableView中按下UIButton之后）。

我已经想出如何将坐标作为CLLocations，并将它们转换为didUpdateLocations方法中的CLLocationCoordinates2D，但似乎无法将它们转移到我的buttonPressed函数。

任何人都可以解释我如何正确地将坐标信息传递给uberButtonPressed方法？我也很困惑如何在确定合适的位置后让locationManager停止更新位置。任何帮助深表感谢。顺便说一句，我使用它来实例化Uber：https://github.com/kirby/uber

import UIKit
import CoreLocation
import MapKit

class ATableViewController: UITableViewController, CLLocationManagerDelegate {
    let locationManager = CLLocationManager()
    var location: CLLocation?
    var coordinate: CLLocationCoordinate2D?

// Implemented tableView methods etc here...

func locationManager(manager: CLLocationManager!, didUpdateLocations locations: [AnyObject]!) {
    let newLocation = locations.last as! CLLocation
    println("DID UPDATE LOCATIONS \(newLocation)")
    location = newLocation
    coordinate = location!.coordinate
    println("WE HAVE THE COORDINATES \(coordinate!.latitude) and \(coordinate!.longitude)") // this prints along with DID UPDATE LOCATIONS        
}

func locationManager(manager: CLLocationManager!, didFailWithError error: NSError!) {
    println("error:" + error.localizedDescription)
}
    func uberButtonPressed(sender: UIButton!) {
        let senderButton = sender
        println(senderButton.tag)

        let authStatus: CLAuthorizationStatus = CLLocationManager.authorizationStatus()

        if authStatus == .NotDetermined {
            locationManager.requestWhenInUseAuthorization()
            return
        }
        if CLLocationManager.locationServicesEnabled() {
        locationManager.delegate = self
        locationManager.desiredAccuracy = kCLLocationAccuracyBest
        locationManager.startUpdatingLocation()
        }


        var pickupLocation = coordinate! // fatal error: unexpectedly found nil while unwrapping an Optional value

        println(pickupLocation)

//            // Create an Uber instance
//            var uber = Uber(pickupLocation: pickupLocation)
//        
               // Set a few optional properties
//            uber.pickupNickname = "OK"
//        
//            uber.dropoffLocation = CLLocationCoordinate2D(latitude: 47.591351, longitude: -122.332271)
//            uber.dropoffNickname = "whatever"
//            
//            // Let's do it!
//            uber.deepLink()
//            
}

Answer 1

您应该将var pickupLocation = coordinate!移到didUpdateLocations。分配完成后，您也可以从locationManager.stopUpdatingLocation()内部调用'didUpdateLocation或调整您的值，以便不断更新。停止locationManager后，调用一个NEW函数来运行当前func uberButtonPressed

中的其余代码

Answer 2

我遇到了同样的问题。

而不是像这样调用委托方法：

func locationManager(manager: CLLocationManager!, didUpdateLocations locations: [AnyObject]!) {
    debugPrint("NOT CALLED-- didUpdateLocations AnyObject")    
}

我换成了：

func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
    debugPrint("CALLED-- didUpdateLocations CLLocation")
}

来自locationManager的CLLocationCoordinates didUpdateLocations

2 个答案: