Alamofire iOS13 - swift

Question

I want to update my code in the past when I used swift 2 or 3. I am stuck where I want to use Alamofire but the way to use it changed and I don't know how to use it anymore. Can anybody update this part of the code and explain a little bit? Thank you.
This is the original code.
Alamofire.request(.POST, url)
.response{ (request, response, data, error) in
let xml = SWXMLHash.parse(data!)
let sunsetTime = xml["result"]["rise_and_set"]["sunset_hm"].element?.text
self.sunsetTimeLabel.text = sunsetTime
self.getDateFromString(sunsetTime,year: comp.year,month: comp.month,day: comp.day)
if (error != nil) {
print(error)
}
}
this is the code I was writing.
AF.request(url, method: .post).responseJSON { (responseData) in
let xml = SWXMLHash.parse(responseData as Data)
let sunsetTime = xml["result"]["rise_and_set"]["sunset_hm"].element?.text
self.sunsetTimeLabel.text = sunsetTime
There is an error saying "Cannot convert value of type 'AFDataResponse' (aka 'DataResponse') to type 'Data' in coercion"

Answer 1

Your first code snippet is Alamofire 3 syntax. I infer from the second code snippet that you are now using Alamofire 5.
There are a few issues:
You are calling responseJSON (which you’d only use if your response was JSON, not XML). Use response or, better, responseData.
The response object passed to this closure is not a Data, itself. In the case of responseData method, it is a AFDataResponse object, which has a data property (which is a Data?). You have to extract the Data object from this AFDataResponse, either by unwrapping the contents of the data property, or from the result (see next point).
You should probably check for success or failure and extract the Data from the response.result object.
So, pulling this together, you end up with something like:
AF.request(url, method: .post).responseData { response in
switch response.result {
case .failure(let error):
print(error)
case .success(let data):
let xml = SWXMLHash.parse(data)
...
}
}