AVAudioRecorder doesn't record while screen is locked

Question

I\'ve tried to overcome this for a while. I\'m trying to record sound, but the AVAudioRecorder doesn\'t record while screen is locked. It does continue to record once screen

Answer 1

Ok, so the answer to my own question, which took me a long time to find out, is the following: The code I posted is good, but to actually work it needs to work in the background after screen was locked. For this one needs to add a UIBackgroundModes array in the app's plist file, and add 'audio' as one of its objects. This tells the system to let the app work with audio in the background.

Here's the not-so-easy to find documentation. Unfortunately apple doesn't specify that in their documentation of the audio session categories where they claim certain categories work in the background. Anyway, hopefully this answer will be available for others who have a similar problem...

Answer 2

You may want to consider setting the category as AVAudioSessionCategoryRecord to the AudioSession

Answer 3

How about disabling the screen lock until you are done recording?

[UIApplication sharedApplication].idleTimerDisabled = YES;

// Do recording here

[UIApplication sharedApplication].idleTimerDisabled = NO;

Just don't forget to re-enable the screen lock when you're done!