MPMoviePlayerController在后台播放音频流 [英] MPMoviePlayerController playing audio stream in the background

问题描述

当应用程序进入后台时，我在播放音频流时遇到麻烦.

I am running into trouble with playing an audio stream when the application enters background.

我使用代码启动流:

NSURL *mediaURL = [NSURL URLWithString:@"http://url.to.my.stream"];

MPMoviePlayerController *mp = [[MPMoviePlayerController alloc] initWithContentURL:mediaURL];

[[NSNotificationCenter defaultCenter] addObserver:self 

                                         selector:@selector(moviePlayBackDidFinish:) 

                                             name:MPMoviePlayerPlaybackDidFinishNotification 

                                           object:nil]; 



[mp setControlStyle:MPMovieControlStyleFullscreen];

[mp setMovieSourceType:MPMovieSourceTypeStreaming];

[mp setFullscreen:YES];



[self.view addSubview:[mp view]];



[mp prepareToPlay];

[mp play];

效果完美.但尽管如此，当应用程序进入后台时，我会在属性列表中设置应用程序播放音频"标记，流将停止播放.

It works perfect. But allthough I set the flag 'App plays audio' in the property list when the app enters background the stream stops playing.

如何使我的应用程序在后台播放音频流?

How do I make my application play the audio stream in the background?

最诚挚的问候，非常感谢您的帮助！

Best regards and thanks a lot for help!

推荐答案

我自己没有尝试过，但这看起来很有希望:

I didn't tried it myself but this looks promising: iOS Multitasking: Background Audio

创建项目后，转到APP-Info.plist并添加 UIBackgroundModes作为新行.然后应该创建数组.

Once the project has been created go to APP-Info.plist and add UIBackgroundModes as a new row. It should then create the array.

打开数组，然后在Item 0的右侧将其设置为音频.

Open the array and to the right of Item 0 set it to audio.

编辑

您的AVAudioSession是否设置正确?

Is your AVAudioSession set up properly?

AVAudioSession *audioSession = [AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryPlayback error:nil];
[audioSession setActive:YES error:nil];

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