第一步

import CoreLocation
 var locationManager = CLLocationManager()

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {


  //開啟定位
    loadLocation()  

 return true
}

extension AppDelegate: CLLocationManagerDelegate
 

{

//開啟定位
func loadLocation()
{

    locationManager.delegate = self
    //定位方式
    locationManager.desiredAccuracy = kCLLocationAccuracyBest

     //iOS8.0以上才可以使用
    if(UIDevice.currentDevice().systemVersion >= "8.0"){
        //始終允許訪問位置資訊
        locationManager.requestAlwaysAuthorization()
        //使用應用程式期間允許訪問位置資料
 

        locationManager.requestWhenInUseAuthorization()
    }
    //開啟定位
    locationManager.startUpdatingLocation()
}



//獲取定位資訊
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {

    //取得locations陣列的最後一個
    let location:CLLocation = locations[locations.count
 
-1]
    currLocation = locations.last!
    //判斷是否為空
    if(location.horizontalAccuracy > 0){
        lat = Double(String(format: "%.1f", location.coordinate.latitude))
        long = Double(String(format: "%.1f", location.coordinate.longitude))
        print("緯度:\(long!)")
        print("經度:\(lat!)")
        LonLatToCity()
        //停止定位
        locationManager.stopUpdatingLocation()
    }

}

//出現錯誤
func locationManager(manager: CLLocationManager, didFinishDeferredUpdatesWithError error: NSError?) {
    print(error)
}

///將經緯度轉換為城市名
func LonLatToCity() {
    let geocoder: CLGeocoder = CLGeocoder()
    geocoder.reverseGeocodeLocation(currLocation) { (placemark, error) -> Void in

        if(error == nil)
        {
            let array = placemark! as NSArray
            let mark = array.firstObject as! CLPlacemark
            //城市
            var city: String = (mark.addressDictionary! as NSDictionary).valueForKey("City") as! String
            //國家
            let country: NSString = (mark.addressDictionary! as NSDictionary).valueForKey("Country") as! NSString
            //國家編碼
            let CountryCode: NSString = (mark.addressDictionary! as NSDictionary).valueForKey("CountryCode") as! NSString
            //街道位置
            let FormattedAddressLines: NSString = (mark.addressDictionary! as NSDictionary).valueForKey("FormattedAddressLines")?.firstObject as! NSString
            //具體位置
            let Name: NSString = (mark.addressDictionary! as NSDictionary).valueForKey("Name") as! NSString
            //省
            var State: String = (mark.addressDictionary! as NSDictionary).valueForKey("State") as! String
            //區
            let SubLocality: NSString = (mark.addressDictionary! as NSDictionary).valueForKey("SubLocality") as! NSString


            //如果需要去掉“市”和“省”字眼

            State = State.stringByReplacingOccurrencesOfString("省", withString: "")
            let citynameStr = city.stringByReplacingOccurrencesOfString("市", withString: "")




        }
        else
        {
            print(error)
        }
    }


}

}