SWIFT URLResponse no output // Google Maps PI - json

Question

I build an little task in SWIFT-XCode where I am trying to fetch and print some JSON Data, but the console doesn´t show me any error´s or result. Maybe someone can help me with the problem?. Here´s my code:
let url = URL(string: "https://maps.googleapis.com/maps/api/directions/json?origin=\(lat),\(long)&destination=\(lat+auflong),\(long+auflat)&key=**************")
let task = URLSession.shared.dataTask(with: url!) { (data:Data?, response:URLResponse?, error:Error?) in
if let data = data {
do {
// Convert the data to JSON
let jsonSerialized = try JSONSerialization.jsonObject(with: data, options: []) as? [String : Any]
if let json = jsonSerialized, let url = json["url"], let explanation = json["explanation"] {
print(url)
print(explanation)
}
} catch let error as NSError {
print(error.localizedDescription)
}
} else if let error = error {
print(error.localizedDescription)
}
}
task.resume()

Answer 1

If you debug-step through the code, you see the result in the debug area: watch area.
In my test (using incorrect co-ordinates), when I put a breakpoint at the line starting `let jsonSerialized = '..., return 3 dictionary keys:
status
error_message
routes
But you were expecting url and explantion...
If you change the inner like:
let jsonSerialized = ...
if let json = jsonSerialized
{
print(json)
if let url = json["url"], let explanation = json["explanation"] {
print(url)
print(explanation)
}
}
} catch ...
you'll be able to print the returned json. (Replaced some code with ... for easy reading.)
My output:
["status": REQUEST_DENIED, "error_message": The provided API key is invalid., "routes": <__NSArray0 0x600000003910>(
)
]