Android Gradle Plugin 8.0.0 (April 2023)

Android Gradle plugin 8.0.0 is a major release that includes a variety of new features and improvements.

Compatibility

Patch releases

The following is a list of the patch releases for Android Gradle Plugin 8.0.

Android Gradle Plugin 8.0.2 (May 2023)

For a list of bugs fixed in AGP 8.0.2, see the Android Studio 2022.2.1 closed issues.

Android Gradle Plugin 8.0.1 (May 2023)

This minor update includes the following bug fixes:

Breaking change: namespace required in module-level build script

You must set the namespace in the module-level build.gradle.kts file, rather than the manifest file. You can start using the namespace DSL property starting with AGP 7.3. To learn more, see Set a namespace.

When migrating to the namespace DSL, be aware of the following issues:

• Previous versions of AGP infer the test namespace from the main namespace, or application ID, incorrectly in some cases. The AGP Upgrade Assistant blocks the upgrade if it finds that your project's main namespace and test namespace are the same. If the upgrade is blocked, you need to manually change testNamespace and modify your source code accordingly.
• After you change the test namespace, it's possible that your code compiles but your instrumented tests fail at runtime. This can happen if your instrumented test source code references a resource defined in both your androidTest and app sources.

For more information, see issue #191813691 comment #19.

Breaking changes: build option default values

Starting with AGP 8.0, the default values for these flags have changed to improve build performance. To get help adjusting your code to support some of these changes, use the AGP Upgrade Assistant (Tools > AGP Upgrade Assistant). The Upgrade Assistant guides you through updating your code to accommodate the new behavior or setting flags to preserve the previous behavior.

Breaking changes: enforced build option values

Starting with AGP 8.0, you can no longer change the values for these flags. If you specify them in the gradle.properties file, the value is ignored and AGP prints warnings.

New stable flag for execution profile

AGP includes the new flag android.settings.executionProfile. Use this flag to override the default execution profile from the SettingsExtension. To learn more, see the settings plugin documentation.

To preview experimental flags, see the preview release notes.

Kotlin lazy property assignment not supported

If you're using Gradle's Kotlin DSL for your build scripts, note that Android Studio and AGP 8.0 don't support the experimental property assignment using the = operator. For more information about this feature, see the release notes and documentation.

Build Analyzer task categories

Starting with Android Studio Flamingo, Build Analyzer has a new default view for tasks that impact build duration. If your project uses AGP 8.0 or higher, instead of displaying tasks individually, Build Analyzer groups them by category. For example, tasks specific to Android Resources, Kotlin, or Dexing are grouped together and then sorted by build duration. This makes it easy to know what category has the most impact on build time. Expanding each category displays a list of the corresponding tasks. To display tasks individually, without grouping, use the Group by drop-down.

New settings plugin

AGP 8.0.0-alpha09 introduces the new settings plugin. The settings plugin lets you centralize global configurations—configurations that apply to all modules—in one place so you don't need to copy and paste the configurations in multiple modules. In addition, you can use the settings plugin to create tool execution profiles, or different instructions for how to run a tool, and switch among them.

To use the settings plugin, apply the plugin in the settings.gradle file:

apply plugin 'com.android.settings'

Centralize global configurations

To configure global configurations, use the new android block in the settings.gradle file. Here's an example:

android {
  compileSdk 31
  minSdk 28
  ...
}

Tool execution profiles

The settings plugin also lets you create execution profiles for some tools. An execution profile determines how a tool is run; you can select different execution profiles depending on the environment. In an execution profile, you can set JVM arguments for a tool and configure it to run in a separate process. Currently, only the R8 tool is supported.

Create execution profiles and set the default execution profile in the settings.gradle file, as shown in the following example:

android {
  execution {
    profiles {
      high {
        r8 {
          jvmOptions += ["-Xms2048m", "-Xmx8192m", "-XX:+HeapDumpOnOutOfMemoryError"]
          runInSeparateProcess true
        }
      }
      low {
        r8 {
          jvmOptions += ["-Xms256m", "-Xmx2048m", "-XX:+HeapDumpOnOutOfMemoryError"]
          runInSeparateProcess true
        }
      }
      ci {
        r8.runInSeparateProcess false
      }
    }
    defaultProfile "low"
  }
}

To override the default profile, select a different profile using the android.experimental.settings.executionProfile property in the gradle.properties file:

android.experimental.settings.executionProfile=high

You can also set this property using the command line, which lets you set up different workflows. For example if you have a continuous integration workflow you can use the command line to change the execution profile without having to change the settings.gradle file:

./gradlew assembleRelease \
  -Pandroid.experimental.settings.executionProfile=ci

JDK 17 required to run AGP 8.0

When using Android Gradle Plugin 8.0 to build your app, JDK 17 is now required to run Gradle. Android Studio Flamingo bundles JDK 17 and configures Gradle to use it by default, which means that most Android Studio users don't need to make any configuration changes to their projects.

If you need to manually set the JDK version used by AGP inside of Android Studio, you need to use JDK 17 or higher.

When using AGP independent of Android Studio, upgrade the JDK version by setting the JAVA_HOME environment variable or the -Dorg.gradle.java.home command-line option to your installation directory of JDK 17.

Fixed issues

Android Gradle plugin 8.0.0

Android Gradle plugin 8.0.1

Android Gradle plugin 8.0.2