IOS音频视频

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视频播放 MediaPlayer.framework

MPMoviePlayerViewController VS MPMoviePlayerController

另外 UIWebview播放方式 方便 但是对一些视频不支持 经测试有的流媒体的 使用 MPMoviePlayerController 可以播放 但 UIWebview不支持.

因 MPMoviePlayerController 为单例4.0之后 可使用 AVPlayerLayer 的播放方式 addSubLayer实现多个视频同时播放

player1 = [AVPlayer playerWithURL:[NSURL fileURLWithPath:moviePath]];

     player1.actionAtItemEnd = AVPlayerActionAtItemEndNone;

     [[NSNotificationCenter defaultCenter] addObserver:self

                                                          selector:@selector(playerItemDidReachEnd:)

                                                               name:AVPlayerItemDidPlayToEndTimeNotification

                                                            object:[player1 currentItem]];

     [player1 play];

playerLayer1 = [AVPlayerLayer playerLayerWithPlayer:player1];

     playerLayer1.frame = self.bounds;       

          [self.layer addSublayer:playerLayer1];

参考:

MPMoviePlayerViewController

http://developer.apple.com/library/ios/#documentation/mediaplayer/reference/mpmovieplayerviewcontroller_class/Reference/Reference.html

MPMoviePlayerController

http://developer.apple.com/library/ios/#documentation/mediaplayer/reference/MPMoviePlayerController_Class/Reference/Reference.html

音频播放

AVFoundation.framework

一 各个播放器初始化方法:

1 System Sound Services

// 创建路径

NSString*dropMusicPath = [[NSBundle mainBundle] pathForResource:@"bird drop" ofType:@"wav"];

CFURLRefdropURL = (CFURLRef)[NSURL fileURLWithPath:dropMusicPath];

//创建系统声音

AudioServicesCreateSystemSoundID(dropURL, &birdDropID);

//播放音效

AudioServicesPlaySystemSound(birdDropID);

2 AVAudioPlayer 类

// 设置音乐文件路径  

    path = [[NSBundle mainBundle] pathForResource:@"InTheMood" ofType:@"mp3"]; 

  // 设置 player    url为本地音频文件路径

 player = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:&error];

在线播放用data初始化

player = [[AVAudioPlayer alloc] initWithData:receiveData error:&err];

 [player play];

3 MPMusicPlayerController

player = [MPMusicPlayerController applicationMusicPlayer];

MPMediaItemCollection *_mediaCollection = [[MPMediaItemCollection alloc]initWithItems:SongList];

self.mediaCollection = _mediaCollection;

[_mediaCollection release];

[player setQueueWithItemCollection:mediaCollection];

[player setRepeatMode:MPMusicRepeatModeAll];

[player play];

二 音频后台播放:

(1) 设置 AVAudioSession 属性支持

NSError * err;

AVAudioSession*audioSession; 

audioSession = [AVAudioSession sharedInstance]; 

[audioSession setCategory:AVAudioSessionCategoryPlayback error:nil]; 

[audioSession setActive:YES error:nil];

(2)  设置工程文件plist属性

三 系统后台控制音频播放

(1)  重写方法 canBecomeFirstResponder 返回YES

- (BOOL)canBecomeFirstResponder

{

    return YES;

}

- (void)viewDidLoad {

    [super viewDidLoad];

    [self canBecomeFirstResponder];

}

(2) 实现接收RemoteControlEvents方法

- (void)viewDidAppear:(BOOL)animated {

    [super viewDidAppear:animated];

    [self becomeFirstResponder];

    [[UIApplication sharedApplication] beginReceivingRemoteControlEvents];

}

- (void)viewWillDisappear:(BOOL)animated {

    [super viewWillDisappear:animated];

    [[UIApplication sharedApplication] endReceivingRemoteControlEvents];

    [self resignFirstResponder];

}

(3)  在回调方法做相应处理

- (void) remoteControlReceivedWithEvent: (UIEvent *) receivedEvent {

    if (receivedEvent.type == UIEventTypeRemoteControl)

    {

        switch (receivedEvent.subtype)

     {

            case UIEventSubtypeRemoteControlTogglePlayPause:

                break;

     case UIEventSubtypeRemoteControlPlay:

          break;

     case UIEventSubtypeRemoteControlPause:

          break;

           case UIEventSubtypeRemoteControlPreviousTrack:

                     break;

           case UIEventSubtypeRemoteControlNextTrack:

                break;

            default:

                break;

        }

    }

}

IOS音频视频

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原文地址：http://www.cnblogs.com/lingzhao/p/4119264.html