IOS 牛刀小试 swift- 操练起来【CoreLocation】

最近看了关于ios的另一门语言swift，找了个示例，操作了一下，遇到了点小问题，不过最终还是解决了。

先看代码

import UIKit
import CoreLocation
 
class ViewController: UIViewController,CLLocationManagerDelegate {
 
    let locationManager:CLLocationManager = CLLocationManager()
     
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
         
        locationManager.delegate = self
        locationManager.desiredAccuracy = kCLLocationAccuracyBest
         
        if(ios8()){
            locationManager.requestAlwaysAuthorization()
        }
         
        locationManager.startUpdatingLocation()
    }
     
    func ios8() -> Bool{
        return UIDevice.currentDevice().systemVersion == "8.1"
    }
 
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
 
    func locationManager(manager: CLLocationManager!, didUpdateLocations locations: [AnyObject]!) {
         
        var location:CLLocation = locations[locations.count - 1] as CLLocation
         
        if(location.horizontalAccuracy > 0){
            println(location.coordinate.latitude)
            println(location.coordinate.longitude)
             
            locationManager.stopUpdatingLocation()
        }
    }
     
    func locationManager(manager: CLLocationManager!, didFailWithError error: NSError!){
        println(error)
    }
 
}

如果你把这段代码copy过去的话，运行发现没有出现预期的输出内容。

可以试试下面这个绝招：

在plist文件中增加如下两个参数

1、NSLocationWhenInUseUsageDescription

2、NSLocationAlwaysUsageDescription

然后再编译一次，保证成功，如果不成功，哈哈，反正我成功啦！