GooglePlaces API Swift 3 Issue - ios

Question

I seem to have picked up a few errors since updating to swift 3
// Issue #1
let correctedAddress:String! = self.searchResults![(indexPath as NSIndexPath).row].addingPercentEncoding(withAllowedCharacters: CharacterSet.symbols)
print(correctedAddress)
let url = URL(string: "https://maps.googleapis.com/maps/api/geocode/json?address=\(correctedAddress)&sensor=false")
let task = URLSession.shared.dataTask(with: url!) {
data, response, error in
do {
if data != nil{
let dic = try JSONSerialization.jsonObject(with: data!, options: JSONSerialization.ReadingOptions.mutableLeaves) as! NSDictionary
// Issue #2
let results = dic["results"] as! [String: Any]
let geometry = results["geometry"] as! [String: Any]
let location = geometry["location"] as! [String: Any]
let lat = location["lat"] as! Double
let lon = location["lng"] as! Double
self.delegate.locateWithLongitude(lon, andLatitude: lat)
}
}
catch {
print("Error")
}
}
task.resume()
issue #1:
correctedAddress, as an example, returns value "%51%75%C3%A9%62%65%63%2C%20%43%61%6E%61%64%61". Nevertheless, for some reason the url constant returns nil and causes a crash.
I don't understand why it returns nil. I can replace correctedAddress inside the url with the value %51%75%C3%A9%62%65%63%2C%20%43%61%6E%61%64%61 so the full url is
let url = NSURL(string: "https://maps.googleapis.com/maps/api/geocode/json?address=%51%75%C3%A9%62%65%63%2C%20%43%61%6E%61%64%61&sensor=false") and it works fine.
issue #2:
It crashes just at let results to which i get back the error of Could not cast value of type '__NSArrayI' (0x108bb0c08) to 'NSDictionary' (0x108bb1108).

Answer 1

Try the below code for your Issue#2
let results = dic["results"] as! NSArray
for result in results {
let strObj = result as! NSDictionary
let geometry = strObj["geometry"] as! NSDictionary
let location = geometry["location"] as! NSDictionary
let lat = location["lat"] as! NSNumber
let lon = location["lng"] as! NSNumber
}
For issue#1, try the below code
let valueAtIndex = self.searchResults![(indexPath as NSIndexPath).row].addingPercentEncoding(withAllowedCharacters: CharacterSet.symbols)
guard let correctedAddress = valueAtIndex else { return }
let adrString:String = "https://maps.googleapis.com/maps/api/geocode/json?address=\(correctedAddress)&sensor=false"
let url:URL = URL(string: adrString)!