AVPlayer是AV Foundation框架中的類楚午≌哑耄可以使用AVPlayer來(lái)播放視頻，AVPlayer只管播放視頻矾柜，將視頻顯示出來(lái)時(shí)AVPlayerLayer的工作阱驾。而要向視圖添加AVPlayerLayer就需要視圖必須有一個(gè)CALayer來(lái)使AVPlayerLayer來(lái)作為其子層就谜。在IOS中所有的UIView都有一個(gè)CALayer，而OS X中NSView在默認(rèn)情況下是不使用CALayer的里覆。要在OS X中開啟CALayer選中要打開CALayer的視圖丧荐，選擇View Effects Inspector將Core Animation Layer中列出來(lái)的視圖勾選上即可。
AV Foundation還支持聲音的播放和對(duì)視頻音頻的采集
@IBOutlet weak var playerView: NSView!
@IBAction func play(sender: NSButton) {
self.player?.play()
}
@IBAction func playSlow(sender: NSButton) {
self.player?.rate = 0.25
}
@IBAction func playBack(sender: NSButton) {
self.player?.seekToTime(kCMTimeZero)
}
var player: AVPlayer?
override func viewDidLoad() {
super.viewDidLoad()
if let contentURL = NSBundle.mainBundle().URLForResource("TestVideo", withExtension: "m4v") {
player = AVPlayer(URL: contentURL)
}
let playerLayer = AVPlayerLayer(player: player)
self.playerView.layer?.addSublayer(playerLayer)
playerLayer.frame = self.playerView.bounds
playerLayer.autoresizingMask = CAAutoresizingMask.LayerWidthSizable //CAAutoresizingMask.LayerHeightSizable
self.player?.actionAtItemEnd = AVPlayerActionAtItemEnd.None
}
其實(shí)有更簡(jiǎn)單的框架喧枷。虹统。。
只不過(guò)只支持OS X 10.9 和 IOS 8及以后的版本隧甚。
在OS X上车荔，你可以直接使用AVPlayerView，將AVPlayerView放在你想播放視頻的地方戚扳。
@IBOutlet weak var playerView: AVPlayerView!
override func viewDidLoad() {
super.viewDidLoad()
if let contentURL = NSBundle.mainBundle().URLForResource("TestVideo", withExtension: "m4v") {
self.playerView.player = AVPlayer(URL: contentURL)
}
}
在IOS上把一個(gè)AVPlayerViewController放在你想放置視頻的地方忧便，引入AVKit和 AV Foundation框架，只用下面的配置即可帽借。
let videoURL = NSBundle.mainBundle().URLForResource("TestVideo", withExtension: "m4v")
let videoView = segue.destinationViewController as! AVPlayerViewController
videoView.player = AVPlayer(URL: videoURL!)
AVAudioPlayer
它的使用和AVPlayer很像
let audioURL = NSBundle.mainBundle().URLForResource("a", withExtension: "wav")
let audioPlayer = try? AVAudioPlayer(contentsOfURL: audioURL!)
audioPlayer!.play()
audioPlayer?.volume = 0.5
audioPlayer?.numberOfLoops = -1//0:一次珠增，1:兩次
audioPlayer?.currentTime = 0
語(yǔ)音合成
//語(yǔ)音合成
let synthesizer = AVSpeechSynthesizer()
//要讀出的字符串
let utteranceString = "I am lion"
let utterance = AVSpeechUtterance(string: utteranceString)
utterance.rate = 0.175
synthesizer.speakUtterance(utterance)
