From 2c169da9bf875c2864bd02fe07af61f17ad888fe Mon Sep 17 00:00:00 2001
From: wqyfavor <qianyuan.wqy@alibaba-inc.com>
Date: Fri, 27 Sep 2019 11:08:30 +0800
Subject: [PATCH] [iOS] Fix the problem that background color should use
 [UIColor clearColor] instance when transparent. (#2942)

---
 ios/sdk/WeexSDK/Sources/Utility/WXConvert.m | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ios/sdk/WeexSDK/Sources/Utility/WXConvert.m b/ios/sdk/WeexSDK/Sources/Utility/WXConvert.m
index 6861b0873b..117f2a4200 100644
--- a/ios/sdk/WeexSDK/Sources/Utility/WXConvert.m
+++ b/ios/sdk/WeexSDK/Sources/Utility/WXConvert.m
@@ -440,7 +440,7 @@ + (UIColor *)UIColorFromRGBA:(uint32_t)rgba
     g = g8 / 255.f;
     b = b8 / 255.f;
     a = a8 / 255.f;
-    return [UIColor colorWithRed:r green:g blue:b alpha:a];
+    return a < 0.5 ? [UIColor clearColor] : [UIColor colorWithRed:r green:g blue:b alpha:a];
 }
 
 + (uint32_t)RGBAColorFromUIColor:(UIColor*)color