update

Author: yongming9011

library/src/main/java/com/zhangym/customview/VerificationCodeView.java

@@ -588,7 +588,7 @@ protected void onDraw(Canvas canvas) {
  /*
  绘制文本
  */
- if (mVerificationText != null) {
+ if (mVerificationText != null && mVerificationText.length() > 0) {
  mPaint.setStyle(Paint.Style.FILL_AND_STROKE);
  // 设置文本是否加粗
  if (isTextBold) {