[iOS] Fix the problem that background color should use [UIColor clear…

…Color] instance when transparent. (#2942)
apache · Sep 27, 2019 · 2c169da · 2c169da
1 parent 69cfe53
commit 2c169da
Showing 1 changed file with 1 addition and 1 deletion.
diff --git 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