iOS8

Add the Alamofire CocoaPods in your swift project.

Find your Google place API key on Google APIs Console.

ViewConroller.swift
[code language=”obj-c”]
import UIKit
class ViewController: UIViewController {
override func viewDidAppear(animated: Bool) {
super.viewDidAppear(animated)
let gpaViewController = GooglePlacesAutocomplete(
apiKey: "YOUR API KEY",
placeType: .Address
)
gpaViewController.placeDelegate = self
presentViewController(gpaViewController, animated: true, completion: nil)
}
}
extension ViewController: GooglePlacesAutocompleteDelegate {
func placeSelected(place: Place) {
println(place.description)
}
func placeViewClosed() {
dismissViewControllerAnimated(true, completion: nil)
}
}
[/code]
GooglePlacesAutocomplete.xib

GooglePlacesAutocomplete.swift
[code language=”obj-c”]
import UIKit
import Alamofire
enum PlaceType: Printable {
case All
case Geocode
case Address
case Establishment
case Regions
case Cities
var description : String {
switch self {
case .All: return ""
case .Geocode: return "geocode"
case .Address: return "address"
case .Establishment: return "establishment"
case .Regions: return "regions"
case .Cities: return "cities"
}
}
}
struct Place {
let id: String
let description: String
}
protocol GooglePlacesAutocompleteDelegate {
func placeSelected(place: Place)
func placeViewClosed()
}
// MARK: – GooglePlacesAutocomplete
class GooglePlacesAutocomplete: UINavigationController {
var gpaViewController: GooglePlacesAutocompleteContainer?
var placeDelegate: GooglePlacesAutocompleteDelegate? {
get { return gpaViewController?.delegate }
set { gpaViewController?.delegate = newValue }
}
convenience init(apiKey: String, placeType: PlaceType = .All) {
let gpaViewController = GooglePlacesAutocompleteContainer(
apiKey: apiKey,
placeType: placeType
)
self.init(rootViewController: gpaViewController)
self.gpaViewController = gpaViewController
let closeButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.Stop, target: self, action: "close")
gpaViewController.navigationItem.leftBarButtonItem = closeButton
gpaViewController.navigationItem.title = "Enter Address"
}
func close() {
placeDelegate?.placeViewClosed()
}
}
// MARK: – GooglePlaceSearchDisplayController
class GooglePlaceSearchDisplayController: UISearchDisplayController {
override func setActive(visible: Bool, animated: Bool) {
if active == visible { return }
searchContentsController.navigationController?.navigationBarHidden = true
super.setActive(visible, animated: animated)
searchContentsController.navigationController?.navigationBarHidden = false
if visible {
searchBar.becomeFirstResponder()
} else {
searchBar.resignFirstResponder()
}
}
}
// MARK: – GooglePlacesAutocompleteContainer
class GooglePlacesAutocompleteContainer: UIViewController {
var delegate: GooglePlacesAutocompleteDelegate?
var apiKey: String?
var places = [Place]()
var placeType: PlaceType = .All
convenience init(apiKey: String, placeType: PlaceType = .All) {
self.init(nibName: "GooglePlacesAutocomplete", bundle: nil)
self.apiKey = apiKey
self.placeType = placeType
}
override func viewDidLoad() {
super.viewDidLoad()
let tv: UITableView? = searchDisplayController?.searchResultsTableView
tv?.registerClass(UITableViewCell.self, forCellReuseIdentifier: "Cell")
}
}
// MARK: – GooglePlacesAutocompleteContainer (UITableViewDataSource / UITableViewDelegate)
extension GooglePlacesAutocompleteContainer: UITableViewDataSource, UITableViewDelegate {
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return places.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = self.searchDisplayController?.searchResultsTableView?.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as UITableViewCell
// Get the corresponding candy from our candies array
let place = self.places[indexPath.row]
// Configure the cell
cell.textLabel.text = place.description
cell.accessoryType = UITableViewCellAccessoryType.DisclosureIndicator
return cell
}
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
delegate?.placeSelected(self.places[indexPath.row])
}
}
// MARK: – GooglePlacesAutocompleteContainer (UISearchDisplayDelegate)
extension GooglePlacesAutocompleteContainer: UISearchDisplayDelegate {
func searchDisplayController(controller: UISearchDisplayController, shouldReloadTableForSearchString searchString: String!) -> Bool {
getPlaces(searchString)
return false
}
private func getPlaces(searchString: String) {
Alamofire.request(.GET,
"https://maps.googleapis.com/maps/api/place/autocomplete/json",
parameters: [
"input": searchString,
"type": "(\(placeType.description))",
"key": apiKey ?? ""
]).responseJSON { request, response, json, error in
if let response = json as? NSDictionary {
if let predictions = response["predictions"] as? Array<AnyObject> {
self.places = predictions.map { (prediction: AnyObject) -> Place in
return Place(
id: prediction["id"] as String,
description: prediction["description"] as String
)
}
}
}
self.searchDisplayController?.searchResultsTableView?.reloadData()
}
}
}
[/code]
I have learned this thing from Howard Wilson’s(watsonbox) Github Repository : watsonbox/ios_google_places_autocomplete
Happy coding 🙂