如何从parseswift中检索音频文件?-howtoretrieveaudiofilefromparseswift

I have successfully saved an Audio file to Parse but am struggling to download it again. I can't work out what the block should be to go with getDataInBackgroundWithBlock. And how to actually save the file. Any help much appreciated!

我已经成功地保存了一个音频文件来解析，但是我还在努力下载它。我无法计算出该块应该与getDataInBackgroundWithBlock一起使用。以及如何保存文件。任何帮助表示感谢!

let query = PFQuery(className: "wordRecordings")
query.whereKey("wordName", equalTo: "\(joinedWord)")

query.findObjectsInBackgroundWithBlock { (objects:[PFObject]?, error:NSError?) -> Void in

    if error == nil{                        
       for object in objects! {
            let audioFile = object["audioFile"] as! PFFile
            audioFile.getDataInBackgroundWithBlock{ (audioFile: NSData, error:NSError?) -> Void in // THIS BLOCK ISNT CORRECT...
               if error == nil {
               let audioFile = AudioFile(data: audioFile) // THIS WORKS FOR IMAGES BUT NOT AUDIO - HOW DO I CREATE AN AUDIO FILE
               }
              }
             }
            } else {   
               print("Error: \(error!) \(error!.userInfo)")
           }
         }

Thanks to @David below here is a working solution with path code as well.

感谢下面的@David，这里还有一个带有路径代码的有效解决方案。

let fileString = "\(fileName)"
let documentsDirectory = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)[0]
let path = documentsDirectory.URLByAppendingPathComponent(fileString)

audioFile.getDataInBackgroundWithBlock { (audioFile:NSData?, error:NSError?) -> Void in
         if error == nil {
           audioFile.writeToURL(path, atomically: true)
         } else {
         print("error with getData")
         }
  }

1 个解决方案

audioFile.getDataInBackgroundWithBlock{ (audioFile: NSData?, error:NSError?) -> Void in
    if error == nil {
        let path = "path-to-your-file"
        if !audioFile.writeToFile(path, atomically: true){
            print("Error saving")
        }
    }
}