[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["必要な情報がない","missingTheInformationINeed","thumb-down"],["複雑すぎる / 手順が多すぎる","tooComplicatedTooManySteps","thumb-down"],["最新ではない","outOfDate","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["サンプル / コードに問題がある","samplesCodeIssue","thumb-down"],["その他","otherDown","thumb-down"]],["最終更新日 2025-07-26 UTC。"],[],[],null,["# AndroidX overview\n\nThe `androidx` namespace comprises the [Android Jetpack](/jetpack) libraries. Like the Support Library, libraries in the `androidx` namespace ship separately from the Android platform and provide backward compatibility across Android releases.\n\nAndroidX is a major improvement to the original Android\n[Support Library](/topic/libraries/support-library), which is no longer maintained.\n`androidx` packages fully replace the Support Library by providing feature parity and new libraries.\n\nIn addition, AndroidX includes the following features:\n\n- All packages in AndroidX live in a consistent namespace starting with the\n string `androidx`. The Support Library packages have been mapped into\n corresponding `androidx.*` packages. For a full mapping of all the old classes\n and build artifacts to the new ones, see the\n [Package Refactoring](/jetpack/androidx/refactor) page.\n\n- Unlike the Support Library, `androidx` packages are separately maintained\n and updated. The `androidx` packages use strict [Semantic Versioning](https://semver.org/),\n starting with version 1.0.0. You can update AndroidX libraries in your project\n independently.\n\n- [Version 28.0.0](/topic/libraries/support-library/revisions#28-0-0)\n is the last release of the Support Library.\n There will be no more `android.support` library releases.\n All new feature development will be in the `androidx` namespace.\n\n| **Note:** Jetpack libraries don't send any user data to a backend service of any kind. This means that integrating a Jetpack library into your app has no impact on your app's [Data safety form](/guide/topics/data/collect-share) in the Play Console.\n\nUsing `androidx` libraries in your project\n------------------------------------------\n\nSee [Migrating to AndroidX](/jetpack/androidx/migrate) to learn how to migrate an existing project.\n\nIf you want to use `androidx`-namespaced libraries in a new project,\nyou need to set the compile SDK to Android 9.0 (API level 28) or higher and set\nboth of the following Android Gradle plugin flags to `true` in your\n[`gradle.properties`](/studio/build#properties-files) file.\n\n- `android.useAndroidX`: When this flag is set to `true`, the Android plugin uses the appropriate AndroidX library instead of a Support Library. The flag is `false` by default if it is not specified.\n- `android.enableJetifier`: When this flag is set to `true`, the Android plugin automatically migrates existing third-party libraries to use AndroidX dependencies by rewriting their binaries. The flag is `false` by default if it is not specified.\n\n| **Note:** Libraries in `androidx` officially support the [Gradle](https://gradle.org/) build tool with [Android Gradle plugin](/build/releases/gradle-plugin) and don't test or maintain compatibility with any other build configuration.\n\nAPI Reference\n-------------\n\nAll the packages and classes in the `androidx` namespace can be found in the\n[AndroidX reference section](/reference/androidx/packages).\n\nAdditional Resources\n--------------------\n\nLearn more about components on the Jetpack [home page](/jetpack).\nFor more information about the package refactoring from the Support Library\nto `androidx`,\nsee [the blog post](https://android-developers.googleblog.com/2018/05/hello-world-androidx.html)\non that topic."]]
