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爲什麼下面的代碼不能播放聲音?它爲play()返回「true」,但我什麼也聽不到。AVAudioPlayer.play()不播放聲音
let path = "/Users/account/Music/sound.mp3";
let fileURL = NSURL(fileURLWithPath: path)
var Player = AVAudioPlayer(contentsOfURL:fileURL, error:nil);
Player.delegate = self;
Player.prepareToPlay();
Player.volume = 1.0;
var res = Player.play();
println(res);
如果我改用下面的代碼,我可以聽到聲音。
var inFileURL:CFURL = fileURL!;
var mySound = UnsafeMutablePointer<SystemSoundID>.alloc(sizeof(SystemSoundID));
AudioServicesCreateSystemSoundID(inFileURL, mySound);
AudioServicesPlaySystemSound(mySound.memory)
- OS X約塞米蒂10.10.3
- 的Xcode 6.2
而且,對於本地(自動)變量和屬性之間的關鍵生命期差異,請參閱我的書:http://www.apeth.com/swiftBook/ch03.html#_variable_scope_and_lifetime – matt 2015-03-31 22:32:32
我添加了var Player:AVAudioPlayer = AVAudioPlayer();功能外,然後它的工作。 – 2015-04-01 02:34:58