Alamofire get pdf as NSData - ios

Question

I use this alamofire request to get a pdf file, i want to save it as NSData:
func makeDataCall(urlString: String, completionHandler: (responseObject: NSData?, error: NSError?) -> ()) {
//Perform request
Alamofire.request(.GET, urlString, headers: ["Authorization": auth])
.responseData { request, response, responseData in
print(request)
print(response)
print(responseData)
completionHandler(responseObject: responseData.data, error: nil)
}
}
In the response i get this:
"Content-Length" = 592783;
"Content-Type" = "application/pdf";
However responseData.data is nil.
What am i doing wrong?

Answer 1

Editing my previous response, I read your question too quickly.
To download a file like a pdf you should use Alamofire.download rather than request.
There's a section on it in the docs:
https://github.com/Alamofire/Alamofire#downloading-a-file
just checked with some random pdf from the internet and this works for me just fine:
let destination = Alamofire.Request.suggestedDownloadDestination(directory: .DocumentDirectory, domain: .UserDomainMask)
Alamofire.download(.GET, "http://box2d.org/manual.pdf", destination: destination)
.response { _, _, _, error in
if let error = error {
print("Failed with error: \(error)")
} else {
print("Downloaded file successfully")
}
}

Answer 2

In Swift 4 use this code if you want to download a pdf
let h: HTTPHeaders = [
"Accept": "application/pdf",
"Content-Type": "application/pdf",
]
//random document name
let randomString = NSUUID().uuidString
let destination: DownloadRequest.DownloadFileDestination = { _, _ in
var documentsURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0]
documentsURL.appendPathComponent("\(randomString).pdf")
return (documentsURL, [.removePreviousFile])
}
Alamofire.download("yourURL",method: .get,headers: h, to: destination).response { response in
if let destinationUrl = response.destinationURL {
print("destinationUrl \(destinationUrl.absoluteURL)")
}
}