AVAudioSession不会在iOS 7上播放
在iOS 6上，我可以设置AVAudioSession来播放mp3文件。 在iOS 7中运行Base时，这不再有效。 任何想法为什么这不起作用？ 该应用程序从不崩溃......它只是不播放MP3。 我已验证此相同的代码和相同的网址适用于iOS 6应用程序。
错误是：
ERROR: 185: Error creating aggregate audio device: 'what'
WARNING: 219: The input device is 0x31; 'AppleHDAEngineInput:1B,0,1,0:1'
WARNING: 223: The output device is 0x28; 'AppleHDAEngineOutput:1B,0,1,1:0'
ERROR: 398: error 'what'
_itemFailedToPlayToEnd: {
kind = 1;
new = 2;
old = 0;
}
代码：
- (void)viewDidLoad {
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
NSError *setCategoryError = nil;
[audioSession setCategory:AVAudioSessionCategoryPlayback error:&setCategoryError];
if (setCategoryError) { /* handle the error condition */ }
NSError *activationError = nil;
[audioSession setActive:YES error:&activationError];
if (activationError) { /* handle the error condition */ }
[[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
[self becomeFirstResponder];
NSURL *newURL = [NSURL URLWithString:_entry.articleUrl];
self.player = [[MPMoviePlayerController alloc] initWithContentURL: newURL];
[player prepareToPlay];
player.allowsAirPlay = YES;
player.scalingMode = MPMovieScalingModeAspectFit;
player.view.frame = self.view.frame;
[self.view addSubview: player.view];
[self.player setFullscreen:YES animated:YES];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(movieFinishedCallback:)
name:MPMoviePlayerPlaybackDidFinishNotification
object:player];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(exitedFullscreen:)
name:MPMoviePlayerDidExitFullscreenNotification
object:player];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(playbackStateChanged:)
name:MPMoviePlayerPlaybackStateDidChangeNotification
object:player];
[player play];
[super viewDidLoad];
}
尝试使用
NSURL *newURL = [NSURL fileURLWithPath:_entry.articleUrl];
代替
NSURL *newURL = [NSURL URLWithString:_entry.articleUrl];