Record User Sound in Swift iOS - XCode 6.4

RecordSoundsViewController.swift

import UIKit
import AVFoundation

class RecordSoundsViewController: UIViewController, AVAudioRecorderDelegate {

  var audioPlayer: AVAudioPlayer

  @IBAction func recordAudio(sender: UIButton) {
      let dirPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as? String
      
      // Create File name based on current date/time value
      let currentDate = NSDate()
      let formatter = NSDateFormatter()
      formatter.dateFormat = "ddMMyyyy-HHmmss";
      let recordingName = formatter.stringFromDate(currentDate) + ".wav" ;
          
      let filePath = dirPath?.stringByAppendingPathComponent(recordingName);
      let fileUrl = NSURL(fileURLWithPath: filePath!);
      
      // We need to set the recording category    
      var session = AVAudioSession.sharedInstance()
      session.setCategory(AVAudioSessionCategoryPlayAndRecord, error: nil)
                  
      audioRecorder = AVAudioRecorder(URL: fileUrl, settings: nil, error: nil)
      audioRecorder.delegate = self
      audioRecorder.meteringEnabled = true;
      audioRecorder.record()
  }

  @IBAction func stopRecording(sender: UIButton) {
      // Stop the recorder
      audioRecorder.stop()
      
      var audioSession = AVAudioSession.sharedInstance()
      audioSession.setActive(false, error: nil);
      
      println("Recording stopped");
  }
 
  func audioRecorderDidFinishRecording(recorder: AVAudioRecorder!, successfully flag: Bool) {
      if flag {
          // recording is done
      }else{
          println("Error while recording the audio");
      }
  } 
}