[ANDROID] Default app release version broken since 0.19

[thedgbrt]

Hey guys,
After starting a new project with react-native init, the default app crashes on Android when installed as a signed APK. This doesn't happen on 0.18. After digging through the changes, the cause is this line :
def enableProguardInReleaseBuilds = true in this file

Setting it to true fixes the problem.

[facebook-github-bot]

Hey dagobertrenouf, thanks for reporting this issue!

React Native, as you've probably heard, is getting really popular and truth is we're getting a bit overwhelmed by the activity surrounding it. There are just too many issues for us to manage properly.

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[b12k]

This is a bug in 0.19 React-Native release (closed by: #5717).
Had same issued.
Fixed it with:
#5655 (comment)

Change your_app_path/android/app/proguard-rules.pro:
From (lines 45-46):

-keepclassmembers class *  { @com.facebook.react.uimanager.ReactProp <methods>; }
-keepclassmembers class *  { @com.facebook.react.uimanager.ReactPropGroup <methods>; }

To:

-keepclassmembers class *  { @com.facebook.react.uimanager.annotations.ReactProp <methods>; }
-keepclassmembers class *  { @com.facebook.react.uimanager.annotations.ReactPropGroup <methods>; }

[mkonicek]

Thanks for answering this @b12k.

@christopherdro If an issue is answered feel free to close :)

[mkonicek]

Sorry about the bug in the first place! Fixed now.