Version: 2021.2
Getting started with Android
Android Player 設定

Android 環境の設定

Android 用にビルドして実行するには、Unity Android Build Support プラットフォームモジュールをインストールする必要があります。Android デバイスで コードをビルドして実行するには、 Android Software Development Kit (SDK) と Native Development Kit (NDK) もインストールする必要があります。デフォルトで、Unity は OpenJDK に基づく Java Development Kit をインストールします。

Note: Unity supports Android 5.1 “Lollipop” (API 22) and above. See AndroidSdkVersions for details.

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.

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 how to add the Android modules:

Enable USB debugging on your device

To enable USB debugging, you must enable Developer options on your device. To do this, see Android’s Configure developer options documentation.

Use a USB cable to connect your device to your computer. 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. For more information on connecting your Android device to the SDK, refer to the Run Your App section of the Android Developer documentation.

ADB debugging for Chrome OS devices

For information on how to set up your development environment for Chrome OS devices, and enable ADB debugging, see Google’s documentation on Chrome OS Developer Environments.

Connecting to your Chrome OS device

Before you can deploy to your device you need to manually connect with ADB via the device’s IP address.

To begin you need the IP address. Open up the Settings app and choose Network in the sidebar. Next click on the active network interface.

If the interface is wireless then next choose the SSID that you are connected to. In the details you will see your IP address. Make a note of it.

If you are using a wired connection your IP address will be shown on the first details page.

Now we are ready to connect. For the sake of this example let’s say that the device’s IP is 192.168.0.100. In a shell or terminal run the following command

adb connect 192.168.0.100

If the connection was successful you will see a message such as connected to 192.168.0.65:5555. And adb devices should verify that the device is connected.

List of devices attached 192.168.0.65:5555 device

From now on you may run ADB commands to target the device just as you would over a USB connection.

Note: If your device or host machine goes to sleep or loses network connectivity you may need to reconnect.

Android SDK & NDK ツールと OpenJDK インストールのカスタマイズ

You should 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 folders under /Unity/Hub/Editor/[EditorVersion]/Editor/Data/PlaybackEngines/AndroidPlayer/.

If you have multiple versions of Unity with the same required dependencies (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:

Android の外部ツール設定を示す Preferences ウィンドウ
Android の外部ツール設定を示す Preferences ウィンドウ

Warning: Unity doesn’t support versions of the OpenJDK, SDK, or NDK other than the ones it supplies.

Unity が Android アプリのビルドに使用する OpenJDK、SDK や NDK ツールを変更するには、以下の手順を行います。

  1. Open your Unity project.

  2. Open the Preferences window (Windows and Linux: Edit > Preferences; macOS: Unity > Preferences).

  3. In the left navigation column, select External Tools.

  4. Change the OpenJDK path:
    1. Disable the JDK Installed with Unity (recommended) setting.
    2. In the JDK field, enter the path to the JDK installation folder, or use the Browse button to locate it.
  5. Change the Android SDK Tools path:
    1. Disable the Android SDK Tools Installed with Unity (recommended) setting.
    2. In the SDK field, enter the path to the SDK installation folder, or use the Browse button to locate it.

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

  6. Change the Android NDK path:
    1. Android NDK Installed with Unity (recommended) のチェックを外します。
    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:

Unity バージョン NDK バージョン
2018.4 LTS r16b
2019.4 LTS r19
2020.3 LTS r19
2021.1 r21d
2021.2 r21d

要件の完全なリストは、システム要件 のページを参照してください。

Updating the Android SDK Target API

Unity Hub installs the latest version of the Android SDK Target API required by Google Play.

If you need to use a more recent version, you can change the Target API from the Target API Level field in the Player Settings window (menu: Edit > Project Settings > Player, then select the Android platform). You can find the Target API Level option in the Other Settings > Identification section.

Selecting a target API for the Android SDK
Selecting a target API for the Android SDK

After you select an option other than the default, Unity prompts you to update the Android SDK API. You can choose to either:

  • Update the Android SDK
  • Continue to use the highest installed version of the Android SDK

If you select an older version of the Target API, the Unity Android SDK Updater won’t be able to perform the update and gives an error message.

In this case, to update the Android SDK Target API, you must use the Android sdkmanager from either Android Studio or the command line tool. Regardless of the method you choose, make sure to select the correct Android SDK folder for Unity in the Edit > Preferences > External Tools window.

Important: On Windows, if you installed the Unity Editor in the default folder (/Program Files/), you must run the sdkmanager with elevated privilege (Run as Administrator) to perform the update.

Getting started with Android
Android Player 設定