In order to compile Java 9+ source, please set compileSdkVersion to 30 or above

The Problem:

When trying to build a project in Android Studio, an error occurs indicating that compileSdkVersion must be set to 30 or above to compile Java 9+ source, even though it has been set to 33 in the android/build.gradle file.

The Solutions:

Solution 1: Add the code to the `buildscript` section

To fix the error, you need to add the following code to the `buildscript` section in your build.gradle file:

subprojects { subproject -&gt;
    afterEvaluate{
        if((subproject.plugins.hasPlugin(&#39;android&#39;) || subproject.plugins.hasPlugin(&#39;android-library&#39;))) {
            android {
                compileSdkVersion rootProject.ext.compileSdkVersion
                buildToolsVersion rootProject.ext.buildToolsVersion
            }
        }
    }
}

This will apply compileSdkVersion and buildToolsVersion to any android modules you have.

After adding this code, your build.gradle file should look something like this:

buildscript {
    ext {
        compileSdkVersion = 33
        buildToolsVersion = &quot;33.0.0&quot;
    }
    subprojects { subproject -&gt;
        afterEvaluate{
            if((subproject.plugins.hasPlugin(&#39;android&#39;) || subproject.plugins.hasPlugin(&#39;android-library&#39;))) {
                android {
                    compileSdkVersion rootProject.ext.compileSdkVersion
                    buildToolsVersion rootProject.ext.buildToolsVersion
                }
            }
        }
    }
}

Solution 2: Patch dependency

It is possible that one of the dependencies uses an older compileSdkVersion. If that is the case, patch the dependency to use the compileSdkVersion from android/build.gradle.

Q&A

I am trying to build a project in Android Studio and getting this error

—

In order to compile Java 9+ source, please set compileSdkVersion to 30 or above

How do I fix this?

—

Add the following code to the buildscript section in your build. gradle file.

I got this error too today

—

One of the dependencies in your react native project was using an older compileSdkVersion (29). Fixed it by patching the dependency to use the compileSdkVersion from android/build.gradle (https://github.com/vmurin/react-native-azure-auth/issues/185)

Video Explanation:

The following video, titled "How to Fix: The minCompileSdk (31) is greater than this module's ...", provides additional insights and in-depth exploration related to the topics discussed in this post.