AnnotationView open when searching - ios

Question

I have a map search controller that when I search for some annotation, its zooming on it .
Also I would like that when I press the result it will zoom on the correct pin and automatically open the annotationView of the specific annotation
here is my code :
https://github.com/hellzkitchen/stackoverflow-041917.git
import UIKit
import MapKit
class LocationSearchTable : UITableViewController {
var matchingItems = [CustomAnnotations]()
var mapView: MKMapView? = nil
var handleMapSearchDelegate:HandleMapSearch? = nil
func parseAddress(selectedItem:MKPlacemark) -> String {
// put a space between "4" and "Melrose Place"
let firstSpace = (selectedItem.subThoroughfare != nil && selectedItem.thoroughfare != nil) ? " " : ""
// put a comma between street and city/state
let comma = (selectedItem.subThoroughfare != nil || selectedItem.thoroughfare != nil) && (selectedItem.subAdministrativeArea != nil || selectedItem.administrativeArea != nil) ? ", " : ""
// put a space between "Washington" and "DC"
let secondSpace = (selectedItem.subAdministrativeArea != nil && selectedItem.administrativeArea != nil) ? " " : ""
let addressLine = String(
format:"%#%#%#%#%#%#%#",
// street number
selectedItem.subThoroughfare ?? "",
firstSpace,
// street name
selectedItem.thoroughfare ?? "",
comma,
// city
selectedItem.locality ?? "",
secondSpace,
// state
selectedItem.administrativeArea ?? ""
)
return addressLine
}
func search(keywords:String) {
self.matchingItems.removeAll()
for annotation in self.mapView!.annotations {
if annotation.isKindOfClass(CustomAnnotations) {
//Just an example here for searching annotation by title, you could add other filtering actions else.
if (annotation.title??.rangeOfString(keywords) != nil) {
self.matchingItems.append(annotation as! CustomAnnotations)
}
}
}
self.tableView.reloadData()
}
}
extension LocationSearchTable : UISearchResultsUpdating {
func updateSearchResultsForSearchController(searchController: UISearchController) {
guard let mapView = mapView,
let searchBarText = searchController.searchBar.text else { return }
let request = MKLocalSearchRequest()
request.naturalLanguageQuery = searchBarText
request.region = mapView.region
let search = MKLocalSearch(request: request)
search.startWithCompletionHandler { response, _ in
guard let response = response else {
return
}
self.matchingItems = response.mapItems
self.tableView.reloadData()
}
}
}
extension LocationSearchTable {
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return matchingItems.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("MapSearchCell", forIndexPath: indexPath)
let selectedItem = matchingItems[indexPath.row]
cell.textLabel?.text = selectedItem.title
cell.detailTextLabel?.text = selectedItem.subtitle
return cell
}
}
extension LocationSearchTable {
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
let selectedItem = matchingItems[indexPath.row]//.placemark
handleMapSearchDelegate?.dropPinZoomIn(selectedItem)
dismissViewControllerAnimated(true, completion: nil)
}
}

Answer 1

After you search for a designated annotation, there is a method selectAnnotation:
So when you tap on that result, use
mapView.selectAnnotation(resultAnnotation, animated: true)