I am developing a game using unity, and will be generate to iOS / android version for playing, can some one tell me the text to speech function can run on it ? Because I can not find the supporting doucument about that, thanks!
You can't use Cortana for text to speech functionality as of now. You will have to use a Cortana alternative like Braina for that. After installing Braina, Press Ctrl+Alt+A to enable "Autoread Copied Text" feature. Now you can copy any text that you want Braina to read it for you.