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The Android Gradle plugin 3.0.0 and later supports all Java 7 language features and a subset of Java 8 language features that vary by platform version. When building your app using the Android Gradle plugin 4.0.0 and higher, you can use some Java 8 language APIs without requiring a minimum API level for your app. Show This page describes the Java 8 language features you can use, how to properly configure your project to use them, and any known issues you may encounter. See the following video for an overview of Java 8 language features. The Android Gradle plugin provides built-in support for using certain Java 8 language features and third-party libraries that use them. The default toolchain implements the new language features by performing bytecode transformations, called ![Java 8 language feature support using
Java 8 language feature support (Android Gradle Plugin 3.0.0+)To start using supported Java 8 language features:
Kotlinandroid { }Groovyandroid { }When building your app using the Android Gradle plugin 3.0.0 and higher, the plugin doesn't support all Java 8 language features. The following language features are available on any API level: Java 8 language feature Notes Lambda expressions Android doesn't support the serialization of lambda expressions. Method references Type annotations Type annotation information is only available at compile time, not at runtime. The platform supports in API level 24 and below, but not android { }0 or android { }1. Default and static interface methods Repeating annotations In addition to these Java 8 language features, Android Gradle plugin versions 3.0.0 and higher extend support for android { }2-with-resources to all Android API levels. Desugar doesn't support or . If your source code or one of your module dependencies uses one of these methods, you need to specify android { }5 or higher. Otherwise, you receive the following error:
In some cases, your module might not be using the android { }6 or android { }7 methods even when they're included in a library dependency. To keep using that library with android { }8 or lower, to remove unused methods. If that doesn't work, consider using an alternative library that doesn't use the unsupported methods. Java 8+ language features desugaring on the Android Gradle plugin 3.0.0 and higher and doesn't make any additional classes and APIs (such as android { }
Java 8+ API desugaring support (Android Gradle Plugin 4.0.0+)If you're building your app using the Android Gradle plugin 4.0.0 or higher, the plugin extends support for using a number of Java 8 language APIs without requiring a minimum API level for your app. With Android Gradle plugin 7.4.0 or higher, a number of Java 11 language APIs are also available with desugared library 2.0.0 or higher. This additional support for older platform versions is possible because plugin 4.0.0 and higher extends the desugaring engine to also desugar Java language APIs. You can include standard language APIs that were available only in recent Android releases (such as
The following set of APIs are supported when building your app using Android Gradle plugin 4.0.0 or higher:
With Android Gradle plugin 7.4.0 or higher, additional Java 11 APIs are supported such as a subset of the android { }
dependencies { }3 package. For a complete list of supported APIs, visit Java 8+ APIs available through desugaring and Java 11+ APIs available through desugaring. To support these language APIs, the plugin compiles a separate DEX file that contains an implementation of the missing APIs and includes it in your app. The desugaring process rewrites your app’s code to instead use this library at runtime. To enable support for these language APIs on any version of the Android platform:
Kotlinandroid { }
dependencies { }Groovyandroid { }
dependencies { }Note that you may also need to include the previous code snippet in a library module's
Also note that API desugaring can be combined with shrinking, but only when using the R8 shrinker. VersionsThe following table shows the versions of the Java 8+ API library and the minimum Android Gradle plugin version that supports each version: Version Minimum Android Gradle plugin version 1.1.9 4.0.0 1.2.3 7.3.0 2.0.3 7.4.0-alpha10 For details on the versions of the Java 8+ API library, see the CHANGELOG.md file in the android { }
dependencies { }8 GitHub repository. Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates. Last updated 2023-09-14 UTC. [{ "type": "thumb-down", "id": "missingTheInformationINeed", "label":"Missing the information I need" },{ "type": "thumb-down", "id": "tooComplicatedTooManySteps", "label":"Too complicated / too many steps" },{ "type": "thumb-down", "id": "outOfDate", "label":"Out of date" },{ "type": "thumb-down", "id": "samplesCodeIssue", "label":"Samples / code issue" },{ "type": "thumb-down", "id": "otherDown", "label":"Other" }] [{ "type": "thumb-up", "id": "easyToUnderstand", "label":"Easy to understand" },{ "type": "thumb-up", "id": "solvedMyProblem", "label":"Solved my problem" },{ "type": "thumb-up", "id": "otherUp", "label":"Other" }] |