调用短信接口实现了如下功能：1.获取验证码后倒计时的功能，可以自由设置2。短信验证码的发送.3.语音验证码的播报。4。为了避免恶意获取，还加了图片验证码，再获取验证码的功能-Call SMS interface to achieve the following functions: 1 to obtain the code after the countdown function, can be set free of 2. SMS verification code sent.3. voice