Swift中的CLLocation Manager获取用户位置 [英] CLLocation Manager in Swift to get Location of User

问题描述

作为练习，我试图将ObjC中的旧应用程序转换为Swift，并遇到了一些问题。我在旧应用中使用它的方式是建立CLLocation Manager，然后使用：

I am trying to convert an old app in ObjC to Swift as a practice exercise and have ran in to some issues. The way I had it in the old app, it was establishing the CLLocation Manager and then I would use:

manager = [[CLLocationManager alloc]init];
manager.delegate = self;
manager.desiredAccuracy = kCLLocationAccuracyBest;    
[manager startUpdatingLocation]

这会自动调用：

-(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{
}

然后从那里我可以提取所有需要的信息。但是，此方法没有自动完成功能，因此我无法弄清楚如何重现它。该文档说

and from there I could extract all the information I needed. But in swift, there is no autocompletion of this method and I cannot figure out how to reproduce it. The documentation says that

startUpdatingLocation()

仍将由委托人调用，但这没有发生。

will still be called by the delegate, but it isn't happening.

这是我到目前为止所拥有的：

This is what I have so far:

import UIKit
import corelocation

class ViewController: UIViewController,CLLocationManagerDelegate{

@IBOutlet var gpsResult : UILabel

var manager:CLLocationManager!

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

    manager = CLLocationManager()
    manager.delegate = self
    manager.desiredAccuracy = kCLLocationAccuracyBest
    manager.startUpdatingLocation()
}

func locationManager(manager:CLLocationManager, didUpdateLocations locations:AnyObject[]) {
    println("locations = \(locations)")
    gpsResult.text = "success"
}
}

任何帮助或指针可以帮助您寻找到哪里。谢谢。

Any help or pointers on where to look would be appreciated. Thanks.

编辑：已从建议中更新，但仍无法正常工作

Updated from Suggestions, but still not working

编辑2：似乎不是一些错误允许该方法在ViewController中正常工作

Seems to be some bug not allowing the method to work properly in the ViewController

推荐答案

您丢失了两件事。首先，您必须使用 requestAlwaysAuthorization 或 requestWhenInUseAuthorization（）寻求许可。因此，您的 viewDidLoad（）应该是这样的：

You are missing two things. First, you have to ask for permission using requestAlwaysAuthorization or requestWhenInUseAuthorization(). So your viewDidLoad() should be like this:

var locationManager = CLLocationManager()

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

    locationManager.delegate = self
    locationManager.desiredAccuracy = kCLLocationAccuracyBest
    locationManager.requestAlwaysAuthorization()
    locationManager.startUpdatingLocation()
}

第二，编辑 Info.plist 如此处指示。

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