Version: 2020.2
Android
Integrating Unity into Android applications

Android 環境の設定

To build and run for Android, you must install the Unity Android Build Support platform module. You also need to install the Android Software Development Kit (SDK) and the Native Development Kit (NDK) to build and run any code on your Android device. By default, Unity installs a Java Development Kit based on OpenJDK.

Note: Unity supports Android 4.4 “KitKat” and above. See AndroidSdkVersions for details.

1. Install Android Build Support and the Android SDK & NDK tools

Use the Unity Hub to install Android Build Support and the required dependencies: Android SDK & NDK tools, and OpenJDK.

Add Android modules
Add Android modules

You can install Android Build Support, the Android SDK & NDK tools and OpenJDK when you install the Unity Editor, or add them at a later time.

For information on adding the Android modules:

If you are using a 2018 version of Unity, see the Unity 2018.4 documentation for information on manually installing these dependencies.

2. Enable USB debugging on your device

To enable USB debugging, you must enable Developer options on your device. To do this, find the build number in your device’s Settings menu. The location of the build number varies between devices; for stock Android, it’s usually Settings > About phone > Build number. For specific information on your device and Android version, refer to your hardware manufacturer.

上記の説明にしたがってビルド番号を捜したら、ビルド番号を 7 回タップします。タップするたびに小さなポップアップ画面に「デベロッパーになるまであと X ステップです。」と表示され、X が残りのタップの回数のカウントダウンになります。7 回目のタップで開発者向けオプションがアンロックされます。

ノート バージョン 4.2 (Jelly Bean) より古い OS では、開発者向けオプションはデフォルトで有効になっています。

Go to Settings > Developer options (or, if this does not work, on some devices the path is Settings > System > Developer options), and check the USB debugging checkbox. Android now enters debug mode when it is connected to a computer via USB.

Connect your device to your computer using a USB cable. If you are developing on a Windows computer, you might need to install a device-specific USB driver. See the manufacturer website for your device for additional information.

The setup process differs for Windows and macOS and is explained in detail on the Android developer website. For more information on connecting your Android device to the SDK, refer to the Run Your App section of the Android Developer documentation.

Customizing the Android SDK & NDK Tools and OpenJDK installation

Unity recommends that you use the Unity Hub to install Android SDK & NDK tools, to ensure that you receive the correct versions and configuration. Unity installs Android SDK & NDK Tools and OpenJDK respectively in the SDK, NDK and OpenJDK folders under /Unity/Hub/Editor/[EditorVersion]/Editor/Data/PlaybackEngines/AndroidPlayer/.

If you have multiple versions of Unity with the same required dependencies (be sure to check System requirements for the latest) and you want to avoid duplicating the installation of Android SDK & NDK Tools and OpenJDK, you can specify a shared location in the Unity Preferences window. To do this, go to Preferences > External tools and enter the directory paths in the SDK and NDK fields:

Preferences window showing external tools settings for Android
Preferences window showing external tools settings for Android

Warning: Unity does not officially support versions of the OpenJDK, SDK, or NDK other than the ones it supplies.

To change the OpenJDK, SDK Tools, or NDK that Unity uses to build Android apps:

  1. プロジェクトを開きます。
  2. Open the Preferences window (Windows and Linux: Edit > Preferences; macOS: Unity > Preferences).
  3. 左側のナビゲーションペインで External Tools を選択します。

Change the OpenJDK path

  1. Uncheck JDK Installed with Unity (recommended).
  2. In the JDK field, enter the path to the JDK installation folder, or use the Browse button to locate it.

Change the Android SDK Tools path

  1. Uncheck Android SDK Tools Installed with Unity (recommended).
  2. In the SDK field, enter the path to the SDK installation folder, or use the Browse button to locate it.

Unity works with the most recent version of the Android SDK available at the time of the Unity version release.

Change the Android NDK path

  1. Uncheck Android NDK Installed with Unity (recommended).
  2. In the NDK field, enter the path to the NDK installation folder, or use the Browse button to locate it.

Each version of Unity requires a specific version of the Android NDK to be installed:

Unity version NDK version
2017.4 LTS r13d
2018.4 LTS r16b
2019. 1 r16b
2019.2 r16b
2019.3 r19

See the System requirements page for a complete list of requirements.

Android
Integrating Unity into Android applications