How to use

defaultValue

method

in

com.orhanobut.tracklytics.Attribute

private void addSuperAttributesFromParameters(Annotation[][] keys, Object[] values) {
 if (keys == null || values == null) {
  return;
 }
 for (int i = 0, size = keys.length; i < size; i++) {
  if (keys[i].length == 0) {
   continue;
  }
  Object value = values[i];
  Annotation annotation = keys[i][0];
  if (annotation instanceof Attribute) {
   Attribute attribute = (Attribute) annotation;
   Object result = null;
   if (value != null) {
    result = value;
   } else if (attribute.defaultValue().length() != 0) {
    result = attribute.defaultValue();
   }
   addSuperAttribute(attribute.value(), result);
  }
 }
}

private void addAttribute(Attribute attribute, Object methodResult, Map<String, Object> attributes) {
 if (attribute == null) return;
 Object value = null;
 if (methodResult != null) {
  value = methodResult;
 } else if (attribute.defaultValue().length() != 0) {
  value = attribute.defaultValue();
 }
 attributes.put(attribute.value(), value);
 if (attribute.isSuper()) {
  addSuperAttribute(attribute.value(), value);
 }
}

if (value != null) {
 result = value;
} else if (attribute.defaultValue().length() != 0) {
 result = attribute.defaultValue();