CLGeocoder().reverseGeocodeLocation - Show the address of the current location

1. Add a label in the storyboard and edit the code as below:

import CoreLocation

class ViewController: UIViewController, CLLocationManagerDelegate {

@IBOutlet weak var myAddress: UILabel!

Also include the CoreLocation framework in the project.

2. Edit the info.plist file by adding these two items:

NSLocationWhenInUseUsageDescription
NSLocationAlwaysUsageDescription

3. Edit the code as below:

override func viewDidLoad() {

        super.viewDidLoad()

        // Do any additional setup after loading the view, typically from a nib.

        

        locationManager = CLLocationManager()

        locationManager.delegate = self

        locationManager.desiredAccuracy = kCLLocationAccuracyBest

        locationManager.requestWhenInUseAuthorization()

        locationManager.startUpdatingLocation()

        

    }

    func locationManager(manager: CLLocationManager!, didUpdateLocations locations: [AnyObject]!) {

        

        var placemark: CLPlacemark!

        locationManager.stopUpdatingLocation()

        

        CLGeocoder().reverseGeocodeLocation(manager.location, completionHandler: {(placemarks, error)->Void in

            if error == nil && placemarks.count > 0 {

                placemark = placemarks[0] as CLPlacemark

                var addressString : String = ""

                if placemark.ISOcountryCode == "TW" /*Address Format in Chinese*/ {

                    if placemark.country != nil {

                        addressString = placemark.country

                    }

                    if placemark.subAdministrativeArea != nil {

                        addressString = addressString + placemark.subAdministrativeArea + "\n"

                    }

                    if placemark.postalCode != nil {

                        addressString = addressString + placemark.postalCode + " "

                    }

                    if placemark.locality != nil {

                        addressString = addressString + placemark.locality

                    }

                    if placemark.thoroughfare != nil {

                        addressString = addressString + placemark.thoroughfare

                    }

                    if placemark.subThoroughfare != nil {

                        addressString = addressString + placemark.subThoroughfare

                    }

                } else {

                    if placemark.subThoroughfare != nil {

                        addressString = placemark.subThoroughfare + " "

                    }

                    if placemark.thoroughfare != nil {

                        addressString = addressString + placemark.thoroughfare + "\n"

                    }

                    if placemark.postalCode != nil {

                        addressString = addressString + placemark.postalCode + " "

                    }

                    if placemark.locality != nil {

                       addressString = addressString + placemark.locality + "\n"

                    }

                    if placemark.administrativeArea != nil {

                        addressString = addressString + placemark.administrativeArea + " "

                    }

                    if placemark.country != nil {

                        addressString = addressString + placemark.country

                    }

                }

                self.myAddress.text = addressString

            }

        })

        

    }

MapKit - Show the current location

Update: April 27, 2017 with Xcode 8.3.2 (Swift 3.1).

1. Add the mapkit in the storyboard and edit the code as below:

import CoreLocation

import MapKit

class ViewController: UIViewController, CLLocationManagerDelegate, MKMapViewDelegate {

@IBOutlet weak var theMap: MKMapView!

2. Edit the info.plist file by adding these two items:

NSLocationWhenInUseUsageDescription
NSLocationAlwaysUsageDescription (Update: This is not essential)

3. Edit the code as below:

Update:
April 27, 2017 with Xcode 8.3.2 (Swift 3.1)

import UIKit

import CoreLocation

import MapKit

class ViewController: UIViewController, CLLocationManagerDelegate, MKMapViewDelegate {

    @IBOutlet weak var theMap: MKMapView!

    

    //Declare locationManager here to prevent location access message from disappearance.

    var locationManager : CLLocationManager!

    

    override func viewDidLoad() {

        super.viewDidLoad()

        

        locationManager = CLLocationManager()

        locationManager.delegate = self

        locationManager.requestWhenInUseAuthorization()

        locationManager.startUpdatingLocation()

        

        theMap.delegate = self

        theMap.mapType = MKMapType.standard

        theMap.showsUserLocation = true

    }

    

    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {

        if(!locations.isEmpty)

        {

            let myLocation = locations[0] as CLLocation

            

            theMap.setRegion(MKCoordinateRegionMake(myLocation.coordinate, MKCoordinateSpan(latitudeDelta: 0.01, longitudeDelta: 0.01)), animated: true)

        }

    }

    override func didReceiveMemoryWarning() {

        super.didReceiveMemoryWarning()

    }

}

Original Post:
September 27, 2014 with Xcode 6 (Swift 1)

    var locationManager : CLLocationManager!

    

    override func viewDidLoad() {

        super.viewDidLoad()

        // Do any additional setup after loading the view, typically from a nib.

        

        locationManager = CLLocationManager()

        locationManager.delegate = self

        locationManager.desiredAccuracy = kCLLocationAccuracyBest

        locationManager.requestWhenInUseAuthorization()

        locationManager.startUpdatingLocation()

        

        theMap.delegate = self

        theMap.mapType = MKMapType.Standard

        theMap.showsUserLocation = true

    }

    func locationManager(manager: CLLocationManager!, didUpdateLocations locations: [AnyObject]!) {

        

        if (!locations.isEmpty)

        {

            let myLocation  = locations[0] as! CLLocation

            

            theMap.setRegion(MKCoordinateRegionMake(CLLocationCoordinate2DMake(myLocation.coordinate.latitude, myLocation.coordinate.longitude), MKCoordinateSpan(latitudeDelta: 0.01, longitudeDelta: 0.01)), animated: true)

        }

    }

MKMapItem - openMapsWithItems - from current location to another location

coordinate -> placemark -> mapitem -> array of mapitems -> openMapsWithItems

****

import MapKit

****

let currentLocation = MKMapItem.mapItemForCurrentLocation()

        

let markTaipei = MKPlacemark(coordinate: CLLocationCoordinate2DMake(25.0305, 121.5360), addressDictionary: nil)

        

let taipei = MKMapItem(placemark: markTaipei)

        

taipei.name = "Taipei Daan Park"

        

let array = NSArray(objects: currentLocation, taipei)

        

let parameter = NSDictionary(object: MKLaunchOptionsDirectionsModeDriving, forKey: MKLaunchOptionsDirectionsModeKey)

        

MKMapItem.openMapsWithItems(array, launchOptions: parameter)

MKPointAnnotation - Put a pin on a map

import MapKit

import CoreLocation

@IBOutlet weak var myMap: MKMapView!

    override func viewDidLoad() {

        super.viewDidLoad()

        

        var point = MKPointAnnotation()

        

        point.coordinate = CLLocationCoordinate2DMake(25.0305, 121.5360)

        point.title = "Taipei"

        point.subtitle = "Taiwan"

        myMap.addAnnotation(point)

        myMap.centerCoordinate = point.coordinate

        

        //Span of the map

        myMap.setRegion(MKCoordinateRegionMake(point.coordinate, MKCoordinateSpanMake(7,7)), animated: true)

    }

Related Tutorial:
http://rshankar.com/get-your-current-address-in-swift/ error with Xcode beta 6

http://www.johnmullins.co/blog/2014/08/14/location-tracker-with-maps/
Excellent Tutorial

UITableView

Here is how to create a simple table view with Swfit and the storyboard:

1. Drag a table view in the storyboard

2. In the Connections Inspector, link the dataSource and delegate outlets to View Controller.

3. Add UITableViewDelegate and UITableViewDataSource protocols in ViewController.swift

class ViewController: UIViewController,UITableViewDelegate,UITableViewDataSource{
....
}

where
UIViewController = super class (before the first protocol)
UITableViewDelegate = first protocol
UITableViewDataSource = second protocol

Note: the warning occurs because cellForRowAtIndexPath and numberOfRowsInSection are required.

4. Add an array to be printed in the table

let myArray = ["AAA", "BBB", "CCC"]

5. Set the number of rows

func tableView(tableView: UITableView!, numberOfRowsInSection section: Int) -> Int { return myArray.count }


6. Set the table content

func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell! { let cell = UITableViewCell(style: UITableViewCellStyle.Value2, reuseIdentifier: nil) cell.textLabel.text = myArray[indexPath.row] return cell }

**********************
UITableView without using the Storyboard

UIAlertView - Dialog

    let alertView = UIAlertView()

        alertView.title = "Warning"

        alertView.message = "Hello, world!"

        alertView.addButtonWithTitle("OK")

        alertView.show()


========================
AlertDialog in Android

Tuples

let coord = (3, 5)

or

let coord:(Int, Int) = (3, 5)

//playground result:(.0 3, .1 5)

//To access elements of the tuple:

coord.0 //3

coord.1 //5

or

let (x, y) = coord

x //3

y //5

or use underscores to ignore elements of the tuple:

let (_,theYvalue) = coord

theYvalue //5

Named tuple

let coord = (X: 3, Y: 5)

coord.X //3

coord.Y //5

or the explicit form:

let coord:(myX:Int, myY:Int) = (3, 5)

coord.myX //3

coord.myY //5