Map showing search location Swift

Question

Guys, I’d like to know how I can get my map to show the place that was searched and center the view at this point. I was able to do with the current location as follows:

self.mapDisplay.setUserTrackingMode(MKUserTrackingMode.Follow, animated: true) //Linha de seguir o mapa

However I need with the result of the searched address, what I should use?

Update 1:

First I created a Geocoder:

var geocoder = CLGeocoder()

Then I used the method of fetching an address string and putting it into the Placemark variable. And using the properties available in this variable I used Placemark.location.coordinate.latitude and Placemark.location.coordinate.longitute:

 geocoder.geocodeAddressString(address,{(placemarks: [AnyObject]!, error: NSError!) -> Void in
                if let placemark = placemarks?[0] as? CLPlacemark { 

 let location = CLLocationCoordinate2D(latitude: placemark.location.coordinate.latitude, longitude: placemark.location.coordinate.longitude)
                    self.mapView.region = MKCoordinateRegionMakeWithDistance(location, 350, 350)
                    self.mapView.centerCoordinate = location

}

Answer 1

How to make the map show search location using coordinates without external api

First I created a Geocoder:

var geocoder = CLGeocoder()

Then I used the method to find an address string and put it in the variable Placemark. And using the properties available in this variable I used the

placemark.location.coordinate.latitude e o placemark.location.coordinate.longitute:

 geocoder.geocodeAddressString(address,{(placemarks: [AnyObject]!, error: NSError!) -> Void in
                if let placemark = placemarks?[0] as? CLPlacemark { 

 let location = CLLocationCoordinate2D(latitude: placemark.location.coordinate.latitude, longitude: placemark.location.coordinate.longitude)
                    self.mapView.region = MKCoordinateRegionMakeWithDistance(location, 350, 350)
                    self.mapView.centerCoordinate = location

}

Answer 2

Well, since you first need to find the coordinates, maybe the answer is a little broad, but in short, in the iOS there is no method that you pass the address and it returns you latitude and longitude so you first need to seek an alternative, as the Google Geocoding API.

Basically it consists of you passing an address and receiving one JSON, which has several parameters and among them latitude and longitude. For example:

http://maps.googleapis.com/maps/api/geocode/json?address=Av+Paulista+4000,+Sao+Paulo,+SP&sensor=true

If you access this address you will find the parameters you need and with them in hand (after making a request with NSURLConnection etc.), to center this point on the map, create the object CLLocationCoordinate2D, define the region and then point to the center. So:

let location = CLLocationCoordinate2D(latitude: lat, longitude: lng)

mapDisplay.region = MKCoordinateRegionMakeWithDistance(location, 900, 900)
mapDisplay.centerCoordinate = location

Well, that’s basically the way you should go. If you need more details about the request, you can do a search or create another question, I believe there are already some good examples with this type of service request.

To put a marker on the map, something like this:

let annotation: MKPointAnnotation! = MKPointAnnotation()
annotation.coordinate = location

mapDisplay.addAnnotation(annotation)