Handle No Internet Connection Error Before Try to Parse the Result in Alamofire

Question

How should I handle if there is an error occurs when there is no internet connection in Alamofire. I tried checking if data is nil or not but it does not work.

Below

Answer 1

Swift 3 Solution

Assuming you have an Error instance you can do the following:

if let err = error as? URLError, err.code  == URLError.Code.notConnectedToInternet
{
    // No internet
}
else
{
    // Other errors
}

You simply cast error into a URLError. This works since URLError implements the Error protocol. Here is a quote from the apple documentation for reference:

URLError: Describes errors in the URL error domain.

Once you have a URLError instance you can simply compare its code property, which is a URLError.Code enum, against the any relevant enum cases (in our example URLError.Code.notConnectedToInternet).