From 7f52dc3c2aaeacfa615082feef40a407eac8444a Mon Sep 17 00:00:00 2001
From: Rossen Hristov <rossen.hristov@telerik.com>
Date: Fri, 6 Jan 2017 14:34:46 +0200
Subject: [PATCH] Fix: Resetting backgroundImage throws

---
 tns-core-modules/ui/core/view-common.ts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tns-core-modules/ui/core/view-common.ts b/tns-core-modules/ui/core/view-common.ts
index 3c7b0879d..fd7e9f80b 100644
--- a/tns-core-modules/ui/core/view-common.ts
+++ b/tns-core-modules/ui/core/view-common.ts
@@ -1480,6 +1480,11 @@ export const backgroundImageProperty = new CssProperty<Style, string>({
         let url: string = newValue;
         let isValid = false;
 
+        if (url === undefined){
+            style.backgroundInternal = currentBackground.withImage(undefined);
+            return;
+        }
+
         let match = url.match(pattern);
         if (match && match[2]) {
             url = match[2];