解析来自iOS Swift 2的流音频

Question

I have a code to stream audio from parse on ios build in swift after compiling everything seems OK and the audio files sync accurately but when i select them there is no audio coming out of the speakers. on swift 2 its not compiling anymore its saying ambiguous use of url, here is the func written in swift ,i hope we can convert it to swift 2 thank you:

    func grabSong(){
    let SongQuery = PFQuery(className: "songs")
    SongQuery.getObjectInBackgroundWithId(iDArray[SelectedSongNumber], block:{

        (object: PFObject?, error:NSError?)-> Void in

        if let AudioFileURLTemp = object?.objectForKey("songFile")?.url {

           AudioPlayer = AVPlayer(URL: NSURL(string: AudioFileURLTemp! ))
        AudioPlayer.play()
        }
})

}

Answer 1

Yeah it's working, Only you need to check the optionality, like this:

    func grabSong() {
    let SonQuery = PFQuery(className: "Songs")
    SonQuery.getObjectInBackgroundWithId(idArray[SelectedSongNumber], block: {
        (object: PFObject?, error:NSError?) -> Void in
        if let audioFIleTemp: PFFile = object?.valueForKey("SongFile") as? PFFile {
            AudioPlayer = AVPlayer(URL: NSURL(string: audioFIleTemp.url!)!)
            AudioPlayer.play()
        }
    })
}

Answer 2

I haven't tested this (I don't have any audio files on parse currently), however, why not just access the pffile and then convert to a url? It would look something like this:

func grabSong(){
        let SongQuery = PFQuery(className: "songs")
        SongQuery.getObjectInBackgroundWithId(iDArray[SelectedSongNumber], block:{

            (object: PFObject?, error:NSError?)-> Void in

            if let songFile: PFFile = object?.valueForKey("songFile") as? PFFile {
                AudioPlayer = AVPlayer(URL: songFile.url)
                AudioPlayer.play()
            }
        })
    }