VR.cs

using Android.App;
using Android.Widget;
using Android.OS;
using Android.Speech;
using Android.Content;
using System;
using System.Collections.Generic;

namespace Quizer.Droid
{
	[Activity (Label = "Quizer.Droid", MainLauncher = true, Icon = "@drawable/icon")]
	public class MainActivity : Activity, IRecognitionListener
    {
        private SpeechRecognizer mSpeechRecognizer;
        private Intent mSpeechRecognizerIntent;

        int count;
        Button recButton;
        private TextView textBox;

        protected override void OnCreate (Bundle bundle)
		{
			base.OnCreate (bundle);

            // Set our view from the "main" layout resource
            SetContentView (Resource.Layout.Main);

            recButton = FindViewById<Button>(Resource.Id.recButton);
            textBox = FindViewById<TextView>(Resource.Id.textView1);

            mSpeechRecognizer = SpeechRecognizer.CreateSpeechRecognizer(this);
            mSpeechRecognizerIntent = new Intent(RecognizerIntent.ActionRecognizeSpeech);
            mSpeechRecognizerIntent.PutExtra(RecognizerIntent.ExtraSpeechInputCompleteSilenceLengthMillis, 1500);
            mSpeechRecognizerIntent.PutExtra(RecognizerIntent.ExtraSpeechInputPossiblyCompleteSilenceLengthMillis, 1500);
            mSpeechRecognizerIntent.PutExtra(RecognizerIntent.ExtraSpeechInputMinimumLengthMillis, 5000);
            mSpeechRecognizerIntent.PutExtra(RecognizerIntent.ExtraMaxResults, 1);
            mSpeechRecognizerIntent.PutExtra(RecognizerIntent.ExtraLanguageModel, Java.Util.Locale.Default);

            //mSpeechRecognizer.SetRecognitionListener(this); // with or without this line
            recButton.Click += recButton_Click;
        }
        
        void recButton_Click(object sender, EventArgs e)
        {
            mSpeechRecognizer.StartListening(mSpeechRecognizerIntent);
        }
        
        public void OnBeginningOfSpeech()
        {
            textBox.Text = "1";
            throw new NotImplementedException();
        }

        public void OnBufferReceived(byte[] buffer)
        {
            textBox.Text = "2";
            throw new NotImplementedException();
        }

        public void OnEndOfSpeech()
        {
            textBox.Text = "3";
            throw new NotImplementedException();
        }

        public void OnError(SpeechRecognizerError error)
        {
            textBox.Text = "4";
            throw new NotImplementedException();
        }

        public void OnEvent(int eventType, Bundle @params)
        {
            textBox.Text = "5";
            throw new NotImplementedException();
        }

        public void OnPartialResults(Bundle partialResults)
        {
            textBox.Text = "6";
            throw new NotImplementedException();
        }

        public void OnReadyForSpeech(Bundle @params)
        {
            textBox.Text = "7";
            throw new NotImplementedException();
        }

        public void OnRmsChanged(float rmsdB)
        {
            textBox.Text = "8";
            throw new NotImplementedException();
        }

        public void OnResults(Bundle results)
        {
            textBox.Text = "9";
            IList<string> matches = results.GetStringArrayList(SpeechRecognizer.ResultsRecognition);
        }
    }
}