C# example of using Android's TextToSpeech API

XamarinTextToSpeech.cs

protected void SpeakText()
{
	var speaker = new TextToSpeech(this, this);

	speaker.SetLanguage(Java.Util.Locale.Default);
	speaker.SetPitch(1); // Normal speech
	speaker.SetSpeechRate(1); // Normal speech

	var speechId = "1"; // Each speak call needs a unique identifier
	speaker.Speak("Hello From Android", QueueMode.Flush, null, speechId);
}