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Forum Discussion
Download Error, how to extract info
Hi,
I am brand new to Swift, in fact only started looking at it in order to use swiftydropbox! Currently I don't see how to extract info from the downloadError without doing string finding jiggery pokkery!
I am coming from objC class and sending a download with completion message to my swift wrapper class which contains client.files.download()
if there is no response I am doing this:
completion(success: false, error: error?.description)
however I am finding it tricky to use this error description back in my objC class. What is best way to simply get the error code out of this or the NSUnderlyingError? I feel sure I don't need to go wading into that string and searching for key phrases?
Thanks and sorry for the noob question!
2 Replies
- Greg-DB
Dropbox Community Moderator
Hi David, here's an example of using files.download with every error case handled in Swift: (apologies for the poor formatting on the forum)
Dropbox.authorizedClient!.files.download(path: path, destination: destination).response { response, error in
if let (metadata, url) = response {
print("*** Download file ***")
print("Downloaded file name: \(metadata.name)")
print("Downloaded file url: \(url)")
} else if let callError = error {
switch callError as CallError {
case .RouteError(let boxed, let requestId):
print("RouteError[\(requestId)]:")
switch boxed.unboxed as Files.DownloadError {
case .Path(let fileLookupError):
print("PathError: ")
switch fileLookupError {
case .MalformedPath(let malformedPathError):
print("MalformedPath: \(malformedPathError)")
case .NotFile:
print("NotFile")
case .NotFolder:
print("NotFolder")
case .NotFound:
print("NotFound")
case .RestrictedContent:
print("RestrictedContent")
case .Other:
print("Other")
}
case .Other:
print("Other")
}
case .BadInputError(let message, let requestId):
print("BadInputError[\(requestId)]: \(message)")
case .HTTPError(let code, let message, let requestId):
print("HTTPError[\(requestId)]: \(code): \(message)")
case .InternalServerError(let code, let message, let requestId):
print("InternalServerError[\(requestId)]: \(code): \(message)")
case .OSError(let err):
print("OSError: \(err)")
case .RateLimitError:
print("RateLimitError")
}
}
}If I understand your question correctly, you can do the specific error detection in your Swift code, and then send whatever indicator or information you want back to the Objective-C side, as opposed to the error object or description itself.
thanks Gregory, i'll give that a bash 👍
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