2015.07.18［播放音频、视频_1］

灰太狼 2022-08-02 11:43 191阅读 0赞

//  ViewController.swift

//  media

//  Created by cyan on 15/7/18.

import UIKit

import AVFoundation   //播放长音

import AudioToolbox   //播放短音

import MediaPlayer    //播放本地音乐库的音乐

class ViewController: UIViewController ,AVAudioPlayerDelegate \{

var audioPlayer:AVAudioPlayer!

var moviePlayer:MPMoviePlayerController!

override func viewDidLoad() \{

super.viewDidLoad()

/\*

//1.AVFoundation类封装类播放单个声音的能力。播放器用NSURL或者NSData来初始化。需要注意的是NSURL在此处AVFoundation下面，必须是本地的文件的url。因为这个 AVFoundation 封装的AVAudioPlayer不具备播放网络音频的能力。

//获取资源路径

let audioPath = NSBundle.mainBundle().pathForResource("Music", ofType: ".mp3")

//将这个获取到的路径封装成url

var url = NSURL(fileURLWithPath: audioPath!)

//建立播放器

audioPlayer = AVAudioPlayer(contentsOfURL: url, error: nil)

if (audioPlayer == nil)\{

println("nil")

audioPlayer.numberOfLoops = -1  //设置音乐的播放次数，－1为循环播放

audioPlayer.volume = 0.8  //设置音量范围，范围是0.0-1.0

audioPlayer.prepareToPlay()//准备播放音乐

//开始播放

audioPlayer.play()

//停止播放

//audioPlayer.stop()

//暂停播放

// audioPlayer.pause()

\*/

/\*

//2.短音，需要加载AudioToolbox框架

//首先必须通过AudioServicesCreateSystemSoundID注册这个声音文件

var soundPath = NSBundle.mainBundle().pathForResource("Sound12", ofType: ".aif")

var soundURL = NSURL(fileURLWithPath:soundPath!)

var shortSound : SystemSoundID = SystemSoundID()

var err = AudioServicesCreateSystemSoundID(soundURL as! CFURL, &shortSound)

println(err)

if(err != 0)\{//kAudioServicesNoError(没有错误时的代码)

println("不能加载文件\\(soundURL),错误代码：\\(err)")

\}else\{

AudioServicesPlaySystemSound(shortSound)

\*/

/\*\*/

//3.视频，使用MPMoviePlayerController来播放电影文件，但只能播放本地的MPEG-4,和H.264

//需要加载MediaPlayer框架

var moviePath = NSBundle.mainBundle().pathForResource("movie", ofType: ".m4v")

if(moviePath != nil)\{

var movieURL = NSURL(fileURLWithPath: moviePath!)

moviePlayer = MPMoviePlayerController(contentURL: movieURL)

//MPMoviePlayerController有一个视图来展示播放器的控件

self.view.addSubview(moviePlayer.view)

//设置播放器的尺寸

moviePlayer.view.frame = CGRectMake(50, 50, 300,  200)

moviePlayer.allowsAirPlay =  true

moviePlayer.fullscreen =  true //全屏

//需要在应用程序中实现播放功能，还需要注册MPMoviePlayerPlaybackDidFinishNotification到NSNotification

NSNotificationCenter.defaultCenter().addObserver(self, selector: "playMovieFinished:", name: MPMoviePlayerPlaybackDidFinishNotification, object: moviePlayer)

moviePlayer.prepareToPlay()

moviePlayer.play()

override func didReceiveMemoryWarning() \{

super.didReceiveMemoryWarning()

// Dispose of any resources that can be recreated.

func playMovieFinished(theNotification:NSNotification)\{

NSNotificationCenter.defaultCenter().removeObserver(self,name:MPMoviePlayerPlaybackDidFinishNotification,object:moviePlayer)

moviePlayer.view.removeFromSuperview()

func audioPlayerDidFinishPlaying(player: AVAudioPlayer!, successfully flag:  Bool) \{

//播放结束时执行的动作

func audioPlayerDecodeErrorDidOccur(player: AVAudioPlayer!, error:  NSError!) \{

//解码错误执行的动作

func audioPlayerBeginInterruption(player: AVAudioPlayer!) \{

//处理中断的代码

func audioPlayerEndInterruption(player: AVAudioPlayer!) \{

//处理中断结束的代码

2015.07.18［播放音频、视频_1］

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