AVAudioRecorder in iOS 9 Not working - ios

Question

I'm using AVAudioRecorder to record a audio file. The code I'm using works perfectly fine in iOS 8 and below but since the latest update of iOS 9 the recording seems to have stopped working.
I tried logging the properties of AVAudioRecorder object and even after calling the "record" function in AVAudioRecorder the isRecording is showing as NO and when the "stop" function is called i get the call back in the delegate
- (void)audioRecorderDidFinishRecording:(AVAudioRecorder *)recorder successfully:(BOOL)flag; with success flag as NO
audioSession = [AVAudioSession sharedInstance];
NSError *err = nil;
[audioSession setCategory :AVAudioSessionCategoryPlayAndRecord error:&err];
if(err){
NSLog(#"audioSession: %# %ld %#", [err domain], (long)[err code], [[err userInfo] description]);
return;
}
[audioSession setActive:YES error:&err];
recordSetting = [[NSMutableDictionary alloc] init];
[recordSetting setValue:[NSNumber numberWithInt:kAudioFormatMPEG4AAC] forKey:AVFormatIDKey];
[recordSetting setValue:[NSNumber numberWithFloat:16000.0] forKey:AVSampleRateKey];
[recordSetting setValue:[NSNumber numberWithInt: 1] forKey:AVNumberOfChannelsKey];
[recordSetting setValue :[NSNumber numberWithInt:16] forKey:AVEncoderBitRateKey];
[recordSetting setValue :[NSNumber numberWithInt:8] forKey:AVLinearPCMBitDepthKey];
[recordSetting setValue :[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey];
[recordSetting setValue :[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsFloatKey];
[recordSetting setValue :[NSNumber numberWithInt:AVAudioQualityMin] forKey:AVEncoderAudioQualityKey];
recorderFilePath = [NSString stringWithFormat:#"%#/%#.m4a", DOCUMENTS_FOLDER,#"sample"];
NSLog(#"RecorderFilePath : %#",recorderFilePath);
NSURL *url = [NSURL fileURLWithPath:recorderFilePath];
err = nil;
recorder = [[ AVAudioRecorder alloc] initWithURL:url settings:recordSetting error:&err];
//prepare to record
[recorder setDelegate:self];
[recorder prepareToRecord];
recorder.meteringEnabled = YES;
BOOL audioHWAvailable = audioSession.inputAvailable;
[recorder record];
Please advise if i'm doing something wrong in the code.

Answer 1

Try this:
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryRecord error:nil];
// Define the recorder setting
NSMutableDictionary *recordSetting = [[NSMutableDictionary alloc] initWithObjectsAndKeys:[NSNumber numberWithInt:kAudioFormatMPEG4AAC], AVFormatIDKey, [NSNumber numberWithFloat:44100.0], AVSampleRateKey, [NSNumber numberWithInt: 2], AVNumberOfChannelsKey,nil];
// [recordSetting setValue :[NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey];
// Initiate and prepare the recorder
if (recorderHelium)
{
recorderHelium = nil;
}
recorderHelium = [[AVAudioRecorder alloc] initWithURL:[NSURL fileURLWithPath:recordedAudioFilePath] settings:recordSetting error:nil];
recorderHelium.delegate = self;
recorderHelium.meteringEnabled = YES;
[recorderHelium prepareToRecord];
[recorderHelium record];
And also import and include these files:
#import <AudioToolbox/AudioServices.h>
#include <AudioToolbox/AudioToolbox.h>