diff --git a/lib/DragSortableView.js b/lib/DragSortableView.js
index 6170f82..1eb0b56 100644
--- a/lib/DragSortableView.js
+++ b/lib/DragSortableView.js
@@ -177,7 +177,7 @@ export default class DragSortableView extends Component{
             let left = this.touchCurItem.originLeft + dx
             let top = this.touchCurItem.originTop + dy
 
-            this.touchCurItem.ref.setNativeProps({
+            this.touchCurItem.ref?.setNativeProps({
                 style: {
                     zIndex: touchZIndex,
                 }
@@ -271,7 +271,7 @@ export default class DragSortableView extends Component{
                     useNativeDriver: false,
                 }
             ).start(()=>{
-                this.touchCurItem.ref.setNativeProps({
+                this.touchCurItem.ref?.setNativeProps({
                     style: {
                         zIndex: defaultZIndex,
                     }