1)“音频”键位于我的Info.plist的UIBackgroundModes中@H_403_3@

2)在AppDelegate中设置这样的AudioSession(在didFinishLaunchingWithOptions中初始化)：@H_403_3@

AVAudioSession *audio = [[AVAudioSession alloc]init];
;
;

3)我使用AVPlayer(不是AVAudioPlayer)也在AppDelegate中实现. (在AfterFinishLaunchingWithOptions中,在AudioSession之后初始化),紧跟在AudioSession之后@H_403_3@

// Load the array with the sample file
NSString *urlAddress = @"http://mystreamadress.mp3";

//Create a URL object.
self.urlStream = [NSURL URLWithString:urlAddress];  
self.player = [AVPlayer playerWithURL:urlStream];
//Starts playback
[player play];

而且,每当应用程序进入后台,音频都会被暂停(当我按下“主页”按钮)时,任何人都可以帮助我吗？@H_403_3@