Unresolved reference: R

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Permanently deleted user
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Hi everyone,

I'm considering to buy the IntelliJ IDEA Ultimate to work mainly with Android because of the premium features. I'm testing the trial version and imported the project I work to IDEA Ultimate, however, I always get the following error:

  • Unresolved reference: R

Curiously, if I build the project, it generates a valid APK. This "Unresolved reference" is only in development time. The project works perfectly on Android Studio, tho. I tried several ways of fixing it based on posts on the internet (Google, Stack Overflow, this forum, etc) but none of them worked so far. Following, my environment:

Android Studio:

  • Android Studio 3.3.2
  • Build #AI-182.5107.16.33.5314842, built on February 16, 2019
  • JRE: 1.8.0_152-release-1248-b01 x86_64
  • JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
  • macOS 10.14.3

IntelliJ IDEA:

  • IntelliJ IDEA 2018.3.5 (Ultimate Edition)
  • Build #IU-183.5912.21, built on February 26, 2019
  • JRE: 1.8.0_152-release-1343-b28 x86_64
  • JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
  • macOS 10.14.3

Gradle: 

  • Wrapper: 4.10.1-all
  • Plugin: 3.3.2

Any ideas of how I can fix it?

Thank you.

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Yaroslav Bedrov
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Hello Marcello,

Please try 2019.1 EAP: https://www.jetbrains.com/idea/nextversion/

 

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Permanently deleted user
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Hi Yaroslav,

Everything worked well on 2019.1 EAP.

Thank you very much!

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Serge Baranov
Created

See https://twitter.com/tasomaniac/status/1103020923874131968 for the details.

Gradle Android Plugin 3.3+ no longer generates R source file. You either need to update to the IDE that supports the new binary format for the resources or downgrade the plug-in to an older version in your build.gradle.

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