ART: Shape doesn't apply opacity when fill are LinearGradient (Android only)

[ikhilko]

• Review the documentation: https://facebook.github.io/react-native
• Search for existing issues: https://github.com/facebook/react-native/issues
• Use the latest React Native release: https://github.com/facebook/react-native/releases

Environment:

OS: macOS High Sierra 10.13.6
Node: 9.11.1
Yarn: 1.7.0
npm: 5.6.0
Watchman: 4.9.0
Xcode: Xcode 9.4.1 Build version 9F2000
Android Studio: 3.1 AI-173.4819257

Packages: (wanted => installed)
react: 16.3.1 => 16.3.1
react-native: expo/react-native#sdk-28.0.1 => 0.55.4

Description

ARTShape doesn't apply opacity on Android when fill type is LinearGradient. Worked pretty well on iOS.

Reproducible Demo

I prepared a demo showing this problem: https://snack.expo.io/@ikhilko/artshape-opacity-bug-while-using-lineargradient-fill

[ikhilko]

I hope issue can be fixed in one line of code in this file. Looks like it should be:
int a = (int) (255 * mBrushData[5 + 4*i + 3] * opacity);

Maybe someone can check it and add a PR?

[stale]

Hey there, it looks like there has been no activity on this issue recently. Has the issue been fixed, or does it still require the community's attention? This issue may be closed if no further activity occurs. You may also label this issue as "For Discussion" or "Good first issue" and I will leave it open. Thank you for your contributions.

[stale]

Closing this issue after a prolonged period of inactivity. If this issue is still present in the latest release, please feel free to create a new issue with up-to-date information.