Swift, AVAudioRecorder: Error 317: ca_debug_string: inPropertyData == NULL

Question

I know that there are threads where this error message appears but they do not really supply an answer to the problem, this is why I decided open up another thread and ask again

Answer 1

Your session.setCategory is outdated and has to be renamed:

Incorrect:

try! session.setCategory(AVAudioSessionCategoryPlayAndRecord, with:AVAudioSessionCategoryOptions.defaultToSpeaker)

Correct:

try! session.setCategory(AVAudioSession.Category.playAndRecord, mode: AVAudioSession.Mode.default, options: AVAudioSession.CategoryOptions.defaultToSpeaker)