可支持语音到文本转换功能，这个程序很简单。他有一个Mic符号按钮。点击之后我们触发Android的Speech To Text意图（Intent）显示一个对话框来接收语音输入。输入的语音然后会被转换成文本并显示到一个text view中-Can support voice to text conversion function, the program is very simple. He has a Mic symbol button. After we click on the Speech