我正在尝试将音频重定向到
AppRTC iOS example中的扬声器.
我试过了：
AVAudioSession* session = [AVAudioSession sharedInstance]; //error handling BOOL success; NSError* error; //set the audioSession category. //Needs to be Record or PlayAndRecord to use audioRouteOverride: success = [session setCategory:AVAudioSessionCategoryPlayAndRecord error:&error]; if (!success) NSLog(@"AVAudioSession error setting category:%@",error); //set the audioSession override success = [session overrideOutputAudioPort:AVAudioSessionPortOverrideSpeaker error:&error]; if (!success) NSLog(@"AVAudioSession error overrideOutputAudioPort:%@",error); //activate the audio session success = [session setActive:YES error:&error]; if (!success) NSLog(@"AVAudioSession error activating: %@",error); else NSLog(@"audioSession active");
解决方法
我解决了这个问题.
只听AVAudioSessionRouteChangeNotification
只听AVAudioSessionRouteChangeNotification
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didSessionRouteChange:) name:AVAudioSessionRouteChangeNotification object:nil];
并使用didSessionRouteChange选择器如下：
- (void)didSessionRouteChange:(NSNotification *)notification
{
NSDictionary *interuptionDict = notification.userInfo;
NSInteger routeChangeReason = [[interuptionDict valueForKey:AVAudioSessionRouteChangeReasonKey] integerValue];
switch (routeChangeReason) {
case AVAudioSessionRouteChangeReasonCategoryChange: {
// Set speaker as default route
NSError* error;
[[AVAudioSession sharedInstance] overrideOutputAudioPort:AVAudioSessionPortOverrideSpeaker error:&error];
}
break;
default:
break;
}
}
