[expo-image-picker] launchMediaLibraryAsync returns empty object in android release builds

Summary

launchMediaLibraryAsync returns an empty object after picking an image on Android release builds only. This seems like an issue with Proguard.

What platform(s) does this occur on?

Android

Environment

expo-env-info 1.0.5 environment info: System: OS: macOS 12.6 Shell: 5.8.1 - /bin/zsh Binaries: Node: 16.17.1 - ~/.nvm/versions/node/v16.17.1/bin/node Yarn: 1.22.17 - /opt/homebrew/bin/yarn npm: 8.15.0 - ~/.nvm/versions/node/v16.17.1/bin/npm Watchman: 2022.07.04.00 - /opt/homebrew/bin/watchman Managers: CocoaPods: 1.11.3 - /Users/janicduplessis/.rvm/gems/ruby-2.7.4/bin/pod SDKs: iOS SDK: Platforms: DriverKit 21.4, iOS 16.0, macOS 12.3, tvOS 16.0, watchOS 9.0 IDEs: Android Studio: 2021.3 AI-213.7172.25.2113.9014738 Xcode: 14.0/14A309 - /usr/bin/xcodebuild npmPackages: expo: ~47.0.0-alpha.1 => 47.0.0-alpha.1 react-native: 0.70.2 => 0.70.2 Expo Workflow: bare

Minimal reproducible example

I can repro the issue in the bare-expo app by changing enableProguardInReleaseBuilds to true in android/app/build.gradle:106. Then in the ImagePicker example you can see the following:

You might also need https://github.com/expo/expo/pull/19508 to fix an issue with bare-expo in release mode.

[lukmccall]

@lukmccall could we add an EnumArgument as ios modules that record enums should comfort to the interface? then we could add proguard rule like keepclassmembers enum * implements expo.modules.kotlin.records.EnumArgument

Yes, we can. I’ll take care of this.

[brentvatne]

you can either disable proguard or add extra rules. use the extraProguardRules and add the above rules that @janicduplessis mentioned.

add to the options "extraProguardRules": "insert the full string here"