From 3ccf6bd737917fd4b9c271a1767b73e75bf6b12f Mon Sep 17 00:00:00 2001
From: zhongcang <qh438406812@gmail.com>
Date: Thu, 10 Jan 2019 14:42:19 +0800
Subject: [PATCH] * [Android] try to fix js exception: scroll event.xxx is
 undefined

fix
---
 .../weex/ui/component/helper/ScrollStartEndHelper.java       | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/android/sdk/src/main/java/com/taobao/weex/ui/component/helper/ScrollStartEndHelper.java b/android/sdk/src/main/java/com/taobao/weex/ui/component/helper/ScrollStartEndHelper.java
index 85c43f965c..dd375aaa78 100644
--- a/android/sdk/src/main/java/com/taobao/weex/ui/component/helper/ScrollStartEndHelper.java
+++ b/android/sdk/src/main/java/com/taobao/weex/ui/component/helper/ScrollStartEndHelper.java
@@ -66,7 +66,10 @@ public void  onScrolled(int x, int y){
             this.y = y;
             if(!hasStart){
                 if(component.getEvents().contains(Constants.Event.SCROLL_START)){
-                    component.fireEvent(Constants.Event.SCROLL_START, getScrollEvent(x, y));
+                    Map<String, Object> event = getScrollEvent(x,y);
+                    if (null !=event && !event.isEmpty()){
+                        component.fireEvent(Constants.Event.SCROLL_START,event);
+                    }
                 }
                 hasStart = true;
             }