//Start scanning
        scanner.ScanContinuously(opt, HandleScanResult);

    }

    private void HandleScanResult(ZXing.Result result)
    {
        string msg = "";

        if (result != null && !string.IsNullOrEmpty(result.Text))
        {

            msg = result.Text;

            var playerActivity = new Intent(myContext, typeof(AudioActivity));

            //-------------------------------------------------------------
            // Prerequisite: load all tracks onto "Assets/tracks" folder
            // You can put here qr code - track assignments here below
            // msg: decoded qr code
            // playerActivity.Putextra second parameter is a relative path
            // under "Assets" directory
            //--------------------------------------------------------------

            //Iterate through tracks stored in assets and load their titles into an array
            System.String[] trackArray = Application.Context.Assets.List("tracks");

            bool trackFound = false;
            foreach (string track in trackArray)
            {
                if (track.Equals(msg + ".mp3"))
                {
                    playerActivity.PutExtra("Track", "tracks/" + msg + ".mp3");

                    for (int i = 0; i < PostList.postList.Count; i++)
                    {
                        if (PostList.postList.ElementAt(i).code.Equals(msg))
                            playerActivity.PutExtra("TrackTitle", PostList.postList.ElementAt(i).title);
                    }
                    myContext.StartActivity(playerActivity);

                    trackFound = true;

                }
            }