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copied!<p>i just review your issue and got nice answer something you want try with Bellow code:-</p> <pre><code>// create and set up the audio session AVAudioSession* audioSession = [AVAudioSession sharedInstance]; [audioSession setDelegate:self]; [audioSession setCategory: AVAudioSessionCategoryPlayAndRecord error: nil]; [audioSession setActive: YES error: nil]; // set up for bluetooth microphone input UInt32 allowBluetoothInput = 1; OSStatus stat = AudioSessionSetProperty ( kAudioSessionProperty_OverrideCategoryEnableBluetoothInput, sizeof (allowBluetoothInput), &allowBluetoothInput ); NSLog(@"status = %x", stat); // problem if this is not zero // check the audio route UInt32 size = sizeof(CFStringRef); CFStringRef route; OSStatus result = AudioSessionGetProperty(kAudioSessionProperty_AudioRoute, &size, &route); NSLog(@"route = %@", route); // if bluetooth headset connected, should be "HeadsetBT" // if not connected, will be "ReceiverAndMicrophone" // now, play a quick sound we put in the bundle (bomb.wav) CFBundleRef mainBundle = CFBundleGetMainBundle(); CFURLRef soundFileURLRef; SystemSoundID soundFileObject; soundFileURLRef = CFBundleCopyResourceURL (mainBundle,CFSTR ("bomb"),CFSTR ("wav"),NULL); NSError *error = nil; audioRecorder = [[AVAudioRecorder alloc] initWithURL:soundFileURLRef settings:recordSettings error:&error]; if (error) { NSLog(@"error: %@", [error localizedDescription]); } else { [audioRecorder prepareToRecord]; } </code></pre> <p>Credit goes to <a href="https://stackoverflow.com/questions/2375837/how-to-route-iphone-audio-to-the-bluetooth-headset">This</a></p>

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