What I'm trying to achieve is that I have a NetworkManager
that handles the request
's to the server, and handle the error through AFError
.
However sometimes when the server response is 4xx, there is a custom message with that response which I want to show that to the user But don't know how to implement it.
This is my NetworkManager
static let shared:NetworkManager = {
return NetworkManager()
}()
typealias completionHandler = ((Result<Data, AFError>) ->Void)
func handleAFrequest(request: DataRequest,completion: @escaping completionHandler) {
request.validate(statusCode: 200..<300)
request.responseJSON { (response) in
switch response.result {
case .success(_):
if let data = response.data {
completion(.success(data))
}
case .failure(let error):
print(error.localizedDescription)
switch error {
case .invalidURL(let url):
print("Invalid URL: \(url) - \(error.localizedDescription)")
completion(.failure(.invalidURL(url: URL)))
case .responseValidationFailed(let reason):
print("Response validation failed: \(error.localizedDescription); Reason:\(reason)")
completion(.failure(.responseValidationFailed(reason: reason)))
I want to be able to cast server response in addition to the error, and show Message
of the response to the user.
Server Response example when StatusCode is 4xx:
{
"data":
"code":401;
"Message":"Phone Invalid"
}
I have parsed api errors in many of my projects. I believe there is a better alternative to handle the showing or errors if any, to the user. Please see my code, in it, if there is a error I show it in a toast. Showing in a toast is the not focal point but you can see how I handle the error case in my code and it has never failed. Please change the params accordingly to your api call
This code parses the xml from the api. However you can discard that and just focus on how I handle the response and consequently the error.