CODEWITHSUNDEEP
swiftdropbox-api
david72
david72

Reputation: 7307

SwiftyDropbox download progress

I'm using this code to download a file and it works fine.

// Download a file

let destination : (NSURL, NSHTTPURLResponse) -> NSURL = { temporaryURL, response in
    let fileManager = NSFileManager.defaultManager()
    let directoryURL = fileManager.URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)[0]
    // generate a unique name for this file in case we've seen it before
    let UUID = NSUUID().UUIDString
    let pathComponent = "\(UUID)-\(response.suggestedFilename!)"
    return directoryURL.URLByAppendingPathComponent(pathComponent)
}

client.files.download(path: "/hello.txt", destination: destination).response { response, error in
    if let (metadata, url) = response {
        print("*** Download file ***")
        let data = NSData(contentsOfURL: url)
        print("Downloaded file name: \(metadata.name)")
        print("Downloaded file url: \(url)")
        print("Downloaded file data: \(data)")
    } else {
        print(error!)
    }
}

My question is how do I get download progress to show to user?

Upvotes: 1

Views: 2201

Answers (3)

Sathish Kumar Gurunathan
Sathish Kumar Gurunathan

Reputation: 295

In swift 3, We should download like below format

let path = "/Files/\(textTitle).txt"


          _ =  client?.files.download(path: path).response{response,error in

                if let response = response{

                    let responseMetadata = response.0

                    let filecontents = response.1 . // File in encrypt format

                    let description = String(data: filecontents, encoding: String.Encoding.utf8)!   //Decrypting the file


                }else if let error = error{

                    print("The Download error is \(error)")
                }

Hope it helps.

Upvotes: 0

Yasuo Shimizu
Yasuo Shimizu

Reputation: 116

On Swift3, Dropbox API V2 has updated, .progress is updated to progressData as NSProgress.

Dropbox Official Information https://github.com/dropbox/SwiftyDropbox#upload-style-request

NSProgress Apple API Reference https://developer.apple.com/reference/foundation/progress

So, Greg's Sample is going to update like this,

dropboxClient.files.files.download(path: "/path/to/Dropbox/file", destination: destination)

.progress { progressData in

    print("bytesRead = totalUnitCount: \(progressData.totalUnitCount)")
    print("totalBytesRead = completedUnitCount: \(progressData.completedUnitCount)")

    print("totalBytesExpectedToRead (Has to sub): \(progressData.totalUnitCount - progressData.completedUnitCount)")

    print("progressData.fractionCompleted (New)  = \(progressData.fractionCompleted)")

}

.response { response, error in

    if let (metadata, url) = response {
        print("*** Download file ***")
        print("Downloaded file name: \(metadata.name)")
        print("Downloaded file url: \(url)")
    } else {
        print(error!)
    }

}

Upvotes: 3

Greg
Greg

Reputation: 16940

Adapted from the tutorial, you can add a progress callback on the download method to get progress information:

// Download a file
let destination : (NSURL, NSHTTPURLResponse) -> NSURL = { temporaryURL, response in
    let fileManager = NSFileManager.defaultManager()
    let directoryURL = fileManager.URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)[0]
    // generate a unique name for this file in case we've seen it before
    let UUID = NSUUID().UUIDString
    let pathComponent = "\(UUID)-\(response.suggestedFilename!)"
    return directoryURL.URLByAppendingPathComponent(pathComponent)
}

Dropbox.authorizedClient!.files.download(path: "/path/to/Dropbox/file", destination: destination)

    .progress { bytesRead, totalBytesRead, totalBytesExpectedToRead in

        print("bytesRead: \(bytesRead)")
        print("totalBytesRead: \(totalBytesRead)")
        print("totalBytesExpectedToRead: \(totalBytesExpectedToRead)")

    }

    .response { response, error in

        if let (metadata, url) = response {
            print("*** Download file ***")
            print("Downloaded file name: \(metadata.name)")
            print("Downloaded file url: \(url)")
        } else {
            print(error!)
        }

    }

You can then use that raw progress information to back the progress UI in your app.

Upvotes: 5

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