自许多小时前以来,我一直在尝试解决AVAudioSession问题,但没有成功!!
我发现很多人都在谈论endInterruption的问题,但是没有一个人在谈论这个错误:
Unable to reactivate the audio session after the interruption ended: Error Domain=NSOSStatusErrorDomain Code=560161140 "The operation couldn’t be completed. (OSStatus error 560161140.)"
我尝试将此代码转换为ASCII以检查音频代码结果,但是与此数字没有任何关系。
我的代码来初始化会话:
- (void) setupAudioSession {
mySession = [AVAudioSession sharedInstance];
[mySession setDelegate: self];
NSError *audioSessionError = nil;
[mySession setCategory: AVAudioSessionCategoryPlayback error: &audioSessionError];
if (audioSessionError != nil) {
NSLog (@"Error setting audio session category: %@", [audioSessionError description]);
return;
}
// Activate the audio session
[mySession setActive: YES error: &audioSessionError];
if (audioSessionError != nil) {
NSLog (@"Error activating audio session during initial setup: %@", [audioSessionError description]);
return;
}
// Prepare audio file to play
NSBundle *mainBundle = [NSBundle mainBundle];
NSURL *bgSoundURL = [NSURL fileURLWithPath:[mainBundle pathForResource:@"bg_sound" ofType:@"aif"]];
bgPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:bgSoundURL error:&audioSessionError];
if (!bgPlayer) {
NSLog(@"No bgPlayer: %@", [audioSessionError description]);
}
[bgPlayer setNumberOfLoops:-1];
[bgPlayer prepareToPlay];
}
以及endInterruption方法的代码:
- (void) endInterruptionWithFlags: (NSUInteger) flags {
if (flags & AVAudioSessionInterruptionFlags_ShouldResume) {
NSError *endInterruptionError = nil;
[[AVAudioSession sharedInstance] setActive: YES error: &endInterruptionError];
if (endInterruptionError != nil) {
NSLog (@"Unable to reactivate the audio session after the interruption ended: %@", [endInterruptionError description]);
return;
} else {
NSLog (@"Audio session reactivated after interruption.");
if (interruptedWhilePlaying) {
self.interruptedWhilePlaying = NO;
// Resume playback by sending a notification to the controller object, which
// in turn invokes the playOrStop: toggle method.
NSString *MixerHostAudioObjectPlaybackStateDidChangeNotification = @"MixerHostAudioObjectPlaybackStateDidChangeNotification";
[[NSNotificationCenter defaultCenter] postNotificationName: MixerHostAudioObjectPlaybackStateDidChangeNotification object: self];
}
}
}
}
此代码的很大一部分是从Apple Mixer Host Sample中提取的。
样本运行正常很奇怪!
你们能弄清楚哪里出了问题吗?
谢谢。
最佳答案
我解决了更改音频代码设计方式的问题。
我改用C样式来处理音频,而不是使用AVAudioSession及其委托方法。
我实现了该功能:
void interruptionListenerCallback (void *inUserData, UInt32 interruptionState) {}
并初始化为:
AudioSessionInitialize (NULL, NULL, interruptionListenerCallback, self);
在我的-(id)初始化方法中。
希望它也对您有帮助。
最好。