[incubator-weex] branch master updated: [iOS] Fix the problem that background color should use [UIColor clearColor] instance when transparent. (#2942)

[jianhan]

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jianhan pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-weex.git


The following commit(s) were added to refs/heads/master by this push:
     new 2c169da  [iOS] Fix the problem that background color should use 
[UIColor clearColor] instance when transparent. (#2942)
2c169da is described below

commit 2c169da9bf875c2864bd02fe07af61f17ad888fe
Author: wqyfavor <qianyuan....@alibaba-inc.com>
AuthorDate: Fri Sep 27 11:08:30 2019 +0800

    [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 6861b08..117f2a4 100644
--- a/ios/sdk/WeexSDK/Sources/Utility/WXConvert.m
+++ b/ios/sdk/WeexSDK/Sources/Utility/WXConvert.m
@@ -440,7 +440,7 @@ WX_NUMBER_CONVERT(NSUInteger, unsignedIntegerValue)
     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