[英]streaming audio from parse for ios swift 2
編譯完一切似乎還不錯之后,我有一個代碼可以在ios上快速解析來自ios的流音頻,並且音頻文件可以准確同步,但是當我選擇它們時,揚聲器沒有音頻輸出。 在swift 2上不再編譯它的說法,即使用url的模棱兩可,這是swift編寫的func,希望我們可以將其轉換為swift 2,謝謝:
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,只有您需要檢查可選性,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()
}
})
}
我尚未對此進行測試(我目前沒有任何解析中的音頻文件),但是,為什么不訪問pffile然后轉換為url呢? 它看起來像這樣:
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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