How do I record audio on iPhone with AVAudioRecorder?

Actually, there are no examples at all. Here is my working code. Recording is triggered by the user pressing a button on the navBar.

The recording uses cd quality (44100 samples), stereo (2 channels) linear pcm. Beware: if you want to use a different format, especially an encoded one, make sure you fully understand how to set the AVAudioRecorder settings (read carefully the audio types documentation), otherwise you will never be able to initialize it correctly. One more thing.

In the code, I am not showing how to handle metering data, but you can figure it out easily. Finally, note that the AVAudioRecorder method deleteRecording as of this writing crashes your application. This is why I am removing the recorded file through the File Manager.

When recording is done, I save the recorded audio as NSData in the currently edited object using KVC.

Although this is an answered question (and kind of old) I have decided to post my full working code for others that found it hard to find good working (out of the box) playing and recording example - including encoded, pcm, play via speaker, write to file here it is.

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