ios - 在VIdeo播放后录制音频

Question

播放视频后我无法录制音频，如果我在播放视频之前录制没有问题但是我必须关闭应用程序再次录制。 播放视频后我无法录制音频，如果我在播放视频之前录制没有问题但是我必须关闭应用程序再次录制。

录制音频：

- (IBAction)recordAudio:(id)sender {

dirPaths = NSSearchPathForDirectoriesInDomains(
                                               NSDocumentDirectory, NSUserDomainMask, YES);
docsDir = dirPaths[0];

NSString *soundFilePath = [docsDir
                           stringByAppendingPathComponent:@"sound.caf"];

NSURL *soundFileURL = [NSURL fileURLWithPath:soundFilePath];

NSDictionary *recordSettings = [NSDictionary
                                dictionaryWithObjectsAndKeys:
                                [NSNumber numberWithInt:AVAudioQualityMin],
                                AVEncoderAudioQualityKey,
                                [NSNumber numberWithInt:16],
                                AVEncoderBitRateKey,
                                [NSNumber numberWithInt: 2],
                                AVNumberOfChannelsKey,
                                [NSNumber numberWithFloat:44100.0],
                                AVSampleRateKey,
                                nil];

NSError *error = nil;

_audioRecorder = [[AVAudioRecorder alloc]
                  initWithURL:soundFileURL
                  settings:recordSettings
                  error:&error];

if (error)
{
    NSLog(@"error: %@", [error localizedDescription]);
} else {
    [_audioRecorder prepareToRecord];
}

if (!_audioRecorder.recording)
{
    _playButton.enabled = NO;
    _stopButton.enabled = YES;
    [_audioRecorder record];

}
}

Answer 1

录制音频前执行此操作：

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