Unresolved reference: JavaVersion.VERSION_1_8

Question

How to fix the following error?

android { ... compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } ... }

Android Studio --> File --> Project Structure --> Modules --> Unresolved reference: JavaVersion.VERSION_1_8

Are there other options in the dropdown? Also, do you have JDK 8 or later installed? — TheWanderer
– TheWanderer, Commented Oct 29, 2018 at 18:51

Alexander Savin · Accepted Answer · 2018-10-29 19:10:06Z

I added to the buildscript section of the root build.gradle the ext.java_version variable

buildscript { ... ext.java_version = JavaVersion.VERSION_1_8 ... }

and changed in the module's build.gradle JavaVersion.VERSION_1_8 to java_version

android { ... compileOptions { sourceCompatibility java_version targetCompatibility java_version } ... }

Now it's all work fine.

I know it's been awhile since this post... I have the Giraffe version of AndroidStudio... I find a "buildTypes" in build.gradle, but not a "buildScript"

apfreelance · Accepted Answer · 2024-06-10 18:51:57Z

in my case, i created a new android studio kotlin project and in my build.gradle.kts of the app (a generated file), it said

compileOptions { sourceCompatibility = VERSION_1_8 targetCompatibility = JavaVersion.VERSION_1_8 }

where "VERSION_1_8" on sourceCompatibility did not resolve correctly. I changed it to "JavaVersion.VERSION_1_8" and now it works fine.

compileOptions { sourceCompatibility = JavaVersion.VERSION_1_8 targetCompatibility = JavaVersion.VERSION_1_8 }

2 Answers 2