How to get download progress in AFNetworking 2.0?

Question

I am using AFURLSessionManager to create a new download task:

AFURLSessionManager* manager = ...

NSProgress* p = nil;
NSURLSessionDownloadTask* downloadTask         


        

Answer 1

Simple solutions for Swift:

let sessionConfiguration = NSURLSessionConfiguration.defaultSessionConfiguration()
let sessionManager = AFURLSessionManager(sessionConfiguration: sessionConfiguration)
let request = NSURLRequest(URL: url)
let sessionDownloadTask = sessionManager.downloadTaskWithRequest(request, progress: nil, destination: { (url, response) -> NSURL in

            return destinationPath.URLByAppendingPathComponent(fileName) //this is destinationPath for downloaded file

            }, completionHandler: { response, url, error in

                //do sth when it finishes
        })

Now you have 2 options:

1. Using UIProgressView and setProgressWithDownloadProgressOfTask:

   progressView.setProgressWithDownloadProgressOfTask(sessionDownloadTask, animated: true)
   

2. Using AFURLSessionManager and setDownloadTaskDidWriteDataBlock:

   sessionManager.setDownloadTaskDidWriteDataBlock { session, sessionDownloadTask, bytesWritten, totalBytesWritten, totalBytesExpectedToWrite in
   
       let progress = Float(totalBytesWritten)/Float(totalBytesExpectedToWrite)
           //do sth with current progress
   }
   

At the end do not forget about:

sessionDownloadTask.resume()