如何在Alamofire中暂停/恢复/取消我的下载请求

Question

我正在使用Alamofire下载一个文件并且进度下载，但我不知道如何暂停/恢复/取消特定请求。

@IBAction func downloadBtnTapped() { 

Alamofire.download(.GET, "http://httpbin.org/stream/100", destination: destination) 
    .progress { (bytesRead, totalBytesRead, totalBytesExpectedToRead) in 
     println(totalBytesRead) 
    } 
    .response { (request, response, _, error) in 
     println(response) 
    } 
} 


@IBAction func pauseBtnTapped(sender : UIButton) {   
    // i would like to pause/cancel my download request here 
} 

Answer 1

保持在downloadBtnTapped与属性创建的请求的引用，在pauseBtnTapped呼吁cancel该财产。

var request: Alamofire.Request? 

@IBAction func downloadBtnTapped() { 
self.request = Alamofire.download(.GET, "http://httpbin.org/stream/100", destination: destination) 
} 

@IBAction func pauseBtnTapped(sender : UIButton) { 
    self.request?.cancel() 
} 

Answer 2

request.cancel()将取消下载进度。如果你想暂停并继续，你可以使用：

var request: Alamofire.Request? 

@IBAction func downloadBtnTapped() { 
self.request = Alamofire.download(.GET, "http://yourdownloadlink.com", destination: destination) 
} 

@IBAction func pauseBtnTapped(sender : UIButton) { 
    self.request?.suspend() 
} 

@IBAction func continueBtnTapped(sender : UIButton) { 
    self.request?.resume() 
} 

@IBAction func cancelBtnTapped(sender : UIButton) { 
    self.request?.cancel() 
}