React Native error: “Could not determine java version from '9.0.1'.”

Question

I\'m working on MacOS and just starting with react-native.

One of the first steps to get started is to run: react-native run-android or

Answer 1

I was getting this error, but for a more recent version of Java - 10.0.2.

To fix my error, I followed the steps mentioned by @Blacktoviche in this Github issue: https://github.com/facebook/react-native/issues/17688

When I opened the android folder inside my project via Android Studio, I was prompted with Android Gradle plugin update recommended. At the time, I was following a slightly outdated tutorial that told me to click Don't remind me again for this project.

However, as @Blacktoviche recommended in the github issue linked above, sometimes it's necessary to update the Gradle plugin. After updating, I also had to click Install Build Tools 27... and sync project (I don't remember the exact version).

After I followed these steps, I was able to successfully run my react native app on the Android Studio emulator.

Hope this helps someone!