Error Setting Audio Session Category

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Configuring an Audio Session - Apple Developer

https://developer.apple.com/library/archive/documentation/Audio/Conceptual/AudioSessionProgrammingGuide/AudioSessionBasics/AudioSessionBasics.html

To set the audio session category (and optionally its mode and options), call the setCategory:mode:options:error: method as shown in Listing 1-1. Listing 1-1 Setting the audio session category using the AVFoundation framework

AVAudioSession.SetCategory Method (AVFoundation ...

https://docs.microsoft.com/en-us/dotnet/api/avfoundation.avaudiosession.setcategory

null on success, or an instance of NSError in case of failure with the details about the error. Remarks. In general, you should set the category before activating your audio session with SetActive(Boolean, AVAudioSessionSetActiveOptions, NSError). If you change the category at runtime, the route will change.

Apple Developer Documentation

https://developer.apple.com/documentation/avfaudio/avaudiosession/1616583-setcategory

The audio session’s category defines how the app uses audio. Typically, you set the category before activating the session. You can also set the category while the session is active, but this results in an immediate route change. Note. Instead of setting your category and mode properties independently, set them at the same time using the set Category(_: mode: options:) or set …

ios - AVAudioSession setCategory not working - Stack …

https://stackoverflow.com/questions/35615707/avaudiosession-setcategory-not-working

AVAudioSession *session = [AVAudioSession sharedInstance]; [session setActive:NO withOptions:AVAudioSessionSetActiveOptionNotifyOthersOnDeactivation error:&error]; [session setCategory:AVAudioSessionCategoryPlayAndRecord withOptions:AVAudioSessionCategoryOptionMixWithOthers | …

ios - AVAudioSession setCategory WithOptions - Stack …

https://stackoverflow.com/questions/20555466/avaudiosession-setcategory-withoptions

The categoryOptions property of your applications AVAudioSession shared instance is assigned a value of 0 when there are no options set using either of the setCategory methods currently available. For example this line - [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord error:nil]; is equivalent to -

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