How to get a microphone in ios 7?

Question

Is it possible to get the microphone volume in ios 7?

NSURL *url = [NSURL fileURLWithPath:@"/dev/null"]; NSDictionary *settings = [NSDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithFloat: 44100.0], AVSampleRateKey, [NSNumber numberWithInt: kAudioFormatAppleLossless], AVFormatIDKey, [NSNumber numberWithInt: 0], AVNumberOfChannelsKey, [NSNumber numberWithInt: AVAudioQualityMax], AVEncoderAudioQualityKey, nil]; NSError *error; recorder = [[AVAudioRecorder alloc] initWithURL:url settings:settings error:&error]; if (recorder) { //recorder.delegate = self; [recorder prepareToRecord]; recorder.meteringEnabled = TRUE; [recorder record]; levelTimer = [NSTimer scheduledTimerWithTimeInterval: 0.1 target: self selector: @selector(levelTimerCallback:) userInfo: nil repeats: YES]; } else { NSLog(@"");// mic error message } - (void)levelTimerCallback:(NSTimer *)timer { [recorder updateMeters]; const double ALPHA = 0.05; double peakPowerForChannel = pow(10, (ALPHA * [recorder averagePowerForChannel:0])); db = 20* log10(peakPowerForChannel); db += taraturaDb; db = db < 0 ? 0 : db; lowPassResults = ALPHA * peakPowerForChannel + (1.0 - ALPHA) * lowPassResults; if (lowPassResults < 0.95) { NSLog(@"%f",db); } 

what worked in iOS6 doesn't work in iOS 7

thanks

Answer 1

Place these lines before initializing AVAudioRecorder:

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