Reverse Geocode Location: more accuracy than range

Question

I want to get a more accurate address (from coordinates) than the address range from the function

geoCoder.reverseGeocodeLocation(location, completionHandler: {} )

In the google maps API guide (https://developers.google.com/maps/documentation/geocoding/intro#Results) they specify that I can change location_type in order to get a more accurate address. How do I specify these parameters? This is my code:

let geoCoder = CLGeocoder()
let location = CLLocation(latitude: center.latitude, longitude: center.longitude)
geoCoder.reverseGeocodeLocation(location, completionHandler: { (placemarks, error) -> Void in ...
    })

Answer 1

If you want to use the Google Maps API, as you linked, you need to be forming an HTTP request to the API (with an API Key you've acquired from Google). The reverseGeocodeLocation uses Apple's Map API, and is definitely not going to be able to accept Google's location_type parameter. The core HTTP request you're going to want to make is therefore of the form:

let url:String = "https://maps.googleapis.com/maps/api/geocode/json?latlng=\(center.latitude),\(center.longitude)&location_type=\(DESIRED_LOCATION_TYPE)&key=\(YOUR_API_KEY)"

From the link you specified, the DESIRED_LOCATION_TYPE can be one of:

"ROOFTOP" restricts the results to addresses for which we have location information accurate down to street address precision.

"RANGE_INTERPOLATED" restricts the results to those that reflect an approximation (usually on a road) interpolated between two precise points (such as intersections). An interpolated range generally indicates that rooftop geocodes are unavailable for a street address.

"GEOMETRIC_CENTER" restricts the results to geometric centers of a location such as a polyline (for example, a street) or polygon (region).

"APPROXIMATE" restricts the results to those that are characterized as approximate.