How to implement auto-complete for address using Apple Map Kit

Question

I want to auto-complete the address for the user as same as what google api provides in this link:

https://developers.google.com/maps/documentation/javascript/places-autocomplete?hl=en

How can i implement the same functionality using apple map kit?

I have tried to use the Geo Coder, i wrote this for example:

@IBAction func SubmitGeoCode(sender: AnyObject) {      let address = "1 Mart"     let coder = CLGeocoder()      coder.geocodeAddressString(address) { (placemarks, error) -> Void in          for placemark in placemarks! {              let lines = placemark.addressDictionary?["FormattedAddressLines"] as? [String]              for addressline in lines! {                 print(addressline)             }         }     } } 

However the results are very disappointing.

Any Apple APIs available to implement such functionality, or should i head for google api ?

Thank you

Answer 1

Update - I've created a simple example project here using Swift 3 as the original answer was written in Swift 2.

In iOS 9.3 a new class called MKLocalSearchCompleter was introduced, this allows the creation of an autocomplete solution, you simply pass in the queryFragment as below:

var searchCompleter = MKLocalSearchCompleter() searchCompleter.delegate = self var searchResults = [MKLocalSearchCompletion]()  searchCompleter.queryFragment = searchField.text! 

Then handle the results of the query using the MKLocalSearchCompleterDelegate:

extension SearchViewController: MKLocalSearchCompleterDelegate {      func completerDidUpdateResults(completer: MKLocalSearchCompleter) {         searchResults = completer.results         searchResultsTableView.reloadData()     }       func completer(completer: MKLocalSearchCompleter, didFailWithError error: NSError) {         // handle error     } } 

And display the address results in an appropriate format:

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {     let searchResult = searchResults[indexPath.row]     let cell = UITableViewCell(style: .subtitle, reuseIdentifier: nil)     cell.textLabel?.text = searchResult.title     cell.detailTextLabel?.text = searchResult.subtitle     return cell } 

You can then use a MKLocalCompletion object to instantiate a MKLocalSearch.Request, thus gaining access to the MKPlacemark and all other useful data:

let searchRequest = MKLocalSearch.Request(completion: completion!) let search = MKLocalSearch(request: searchRequest) search.startWithCompletionHandler { (response, error) in     if error == nil {         let coordinate = response?.mapItems[0].placemark.coordinate     } }