swift学习笔记（七）（定位）
代码如下：
import UIKit
import CoreLocation
class ViewController: UIViewController, CLLocationManagerDelegate {
@IBOutlet weak var locationLabel: UILabel! // sb里的定位显示label
var locationManager: CLLocationManager!
override func viewDidLoad() {
super.viewDidLoad()
}
override func preferredStatusBarStyle() -> UIStatusBarStyle {
return UIStatusBarStyle.LightContent
}
@IBAction func myLocationButtonDidTouch(sender: AnyObject) { // sb里的定位触发按钮
locationManager = CLLocationManager()
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.requestAlwaysAuthorization()
locationManager.startUpdatingLocation()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func locationManager(manager: CLLocationManager, didFailWithError error: NSError) {
self.locationLabel.text = "Error while updating location " + error.localizedDescription
}
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
CLGeocoder().reverseGeocodeLocation(manager.location!, completionHandler: {(placemarks, error)->Void in
if (error != nil) {
self.locationLabel.text = "Reverse geocoder failed with error" + error!.localizedDescription
return
}
if placemarks!.count > 0 {
let pm = placemarks![0]
self.displayLocationInfo(pm)
} else {
self.locationLabel.text = "Problem with the data received from geocoder"
}
})
}
func displayLocationInfo(placemark: CLPlacemark?) {
if let containsPlacemark = placemark {
//stop updating location to save battery life
locationManager.stopUpdatingLocation()
let locality = (containsPlacemark.locality != nil) ? containsPlacemark.locality : ""
let postalCode = (containsPlacemark.postalCode != nil) ? containsPlacemark.postalCode : ""
let administrativeArea = (containsPlacemark.administrativeArea != nil) ? containsPlacemark.administrativeArea : ""
let country = (containsPlacemark.country != nil) ? containsPlacemark.country : ""
self.locationLabel.text = locality! + postalCode! + administrativeArea! + country!
}
}
}