@Override
 public void timerStart(View v, int startCount) {
   if (v.getId() == R.id.button_timer) {
     button_timer.setText(startCount + second);
     String code = mUserNameEditText.getContent();
     if (checkNumber(code)) {
       doGetVerificationCode(code);
     } else {
       stopTime();
     }
   }
 }
 public void stopTime() {
   button_timer.stopThread();
 }
 @Override
 public void timerEnd(View v) {
   if (v.getId() == R.id.button_timer) {
     button_timer.setText("获取验证码");
   }
 }
 @Override
 public void timerCount(View v, int currentCount) {
   if (v.getId() == R.id.button_timer) {
     button_timer.setText(currentCount + second);
   }
 }