/**
  * Sets the left handle hint text to a given resource string.
  *
  * @param resId
  */
 public void setRightHintText(int resId) {
   if (isHorizontal()) {
     mRightSlider.setHintText(resId);
   }
 }
 /**
  * Sets the left handle hint text to a given resource string.
  *
  * @param resId
  */
 public void setLeftHintText(int resId) {
   if (isHorizontal()) {
     mLeftSlider.setHintText(resId);
   }
 }