AVAudioRecorder & AVAudioPlayer with iOS 7 not working properly

Question

i'm having some issue with AVFoundation framework. I wrote a demo app to record audio, play it, and calculate decibels, with iOS 6. It both worked with iOS simulator built-in xcode 4.6.3 and my iPhone with iOS 6.1.3

Now i've update xcode to version 5 and tested the appa again. With the built-in simulator it works (both with iOS 6.1 and iOS 7 simulators). But when i deploy the app to my iPhone, with iOS 7.0, it doesn't work anymore.

I'm using AVAudioRecorder and AVAudioPlayer.

I don't know what could be the problem. Any suggestions? thank you!

Solution 1

I was having the same issue... It appears as if Apple is now requiring the use of AVAudioSession prior to using the AVAudioRecorder. I couldn't find any documentation on this change in requirement, however the recording portion of my app is now working.

All I did was create an audioSession, set the category, and set it to be active. I did this prior to calling prepareToRecord and I tried it after the call to prepareToRecord... both ways worked.

I hope this fixes your problem!

AVAudioSession *audioSession = [AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
[audioSession setActive:YES error:nil];

Solution 2

Same issue.

I have fixed it by using AVAudioSession. Moreover set properly the category of AVAudioSession:

when recording use:

[self.audioSession setCategory:AVAudioSessionCategoryRecord error:nil];

when playing use:

[self.audioSession setCategory:AVAudioSessionCategoryPlayback error:nil];

If i don't switch the category when i play, the registration the volume is very low.

Good Luck!

Solution 3

I am also facing this problem so First I had to make sure the app had permission to use the mic by going to settings -> privacy -> microphone then I got success.

Comments

[Sam B]

that's exactly what's been happening to me. All my apps that used to work on iOS 6 have just flat out stopped working in iOS 7 for AVAudioRecorder and AVAudioPlayer. In my case they don't even work on simulator

[Mr.Hardy]

Sam, was your app unable to play audio as well? Check my answer for the way I figured out how to fix recording, but my playback was still working prior to the fix.

[atbebtg]

I tried this on my code but its still not working. Do I need to ask permission to use the microphone first? thanks.

[Hank]

@atbebtg you might need to replace the category with AVAudioSessionCategoryPlayback.

[san]

Thank you. Saved my day.

[Valeriy Van]

These helped me solve problem. Thanks a lot. Should add a bit of salt. Last two methods have return value. It is not a good practice ignoring return value. It is not acceptable even in example snippets.