[英]streaming audio from parse for ios swift 2
编译完一切似乎还不错之后,我有一个代码可以在ios上快速解析来自ios的流音频,并且音频文件可以准确同步,但是当我选择它们时,扬声器没有音频输出。 在swift 2上不再编译它的说法,即使用url的模棱两可,这是swift编写的func,希望我们可以将其转换为swift 2,谢谢:
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()
}
})
}
是的,它正在工作,只有您需要检查可选性,如下所示:
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()
}
})
}
我尚未对此进行测试(我目前没有任何解析中的音频文件),但是,为什么不访问pffile然后转换为url呢? 它看起来像这样:
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()
}
})
}
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