diff --git a/src/components/dropdown/index.js b/src/components/dropdown/index.js
index b1e65a1f..87de060f 100644
--- a/src/components/dropdown/index.js
+++ b/src/components/dropdown/index.js
@@ -153,6 +153,8 @@ export default class Dropdown extends PureComponent {
     supportedOrientations: PropTypes.arrayOf(PropTypes.string),
 
     useNativeDriver: PropTypes.bool,
+    
+    preprocessFunc: PropTypes.func
   };
 
   constructor(props) {
@@ -214,8 +216,17 @@ export default class Dropdown extends PureComponent {
       animationDuration,
       absoluteRTLLayout,
       useNativeDriver,
+      preprocessFunc
     } = this.props;
 
+    if (
+      preprocessFunc && 
+      typeof preprocessFunc === "function" &&
+      !disabled
+    ) {
+      preprocessFunc();
+    }
+
     if (disabled) {
       return;
     }