protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
SetContentView(Resource.Layout.Main);
toolbar = FindViewById <Android.Support.V7.Widget.Toolbar>(Resource.Id.toolbar);
SetSupportActionBar(toolbar);
SupportActionBar.Title = "Voice Assistant";
annotationTextView = FindViewById <TextView>(Resource.Id.annotationTextView);
speechTextView = FindViewById <TextView>(Resource.Id.speechTextView);
speechIntentTextView = FindViewById <TextView>(Resource.Id.speechIntentTextView);
speechStateTextView = FindViewById <TextView>(Resource.Id.speechActionTextView);
progressBar = FindViewById <ProgressBar>(Resource.Id.progressBar);
toggleButton = FindViewById <ToggleButton>(Resource.Id.toggleButton);
progressBar.Visibility = ViewStates.Invisible;
random = new System.Random();
speech = SpeechRecognizer.CreateSpeechRecognizer(this);
Log.Debug(LOG_TAG, "IsRecognitionAvailable: " + SpeechRecognizer.IsRecognitionAvailable(this));
speech.SetRecognitionListener(this);
tts = new TextToSpeech(this, this, "com.google.android.com");
locale = new Locale("ru");
recognizerIntent = new Intent(RecognizerIntent.ActionRecognizeSpeech);
recognizerIntent.PutExtra(RecognizerIntent.ExtraLanguagePreference, "ru");
recognizerIntent.PutExtra(RecognizerIntent.ExtraSpeechInputCompleteSilenceLengthMillis, 1500);
recognizerIntent.PutExtra(RecognizerIntent.ExtraSpeechInputPossiblyCompleteSilenceLengthMillis, 1500);
recognizerIntent.PutExtra(RecognizerIntent.ExtraSpeechInputMinimumLengthMillis, 5000);
recognizerIntent.PutExtra(RecognizerIntent.ExtraLanguageModel, RecognizerIntent.LanguageModelFreeForm);
recognizerIntent.PutExtra(RecognizerIntent.ExtraMaxResults, 3);
toggleButton.CheckedChange += ToggleButton_CheckedChange;
}