Gradle templates

Gradle templates configure how to build an Android application using Gradle. Each Gradle template represents a single Gradle project. Gradle projects can include, and depend on, other Gradle projects.

Gradle template files

Gradle 模板包含以下文件：

File	所在地	包含
`baseProjectTemplate.gradle`	在导出的项目中，`root/build.gradle` 文件夹	Configuration information that affects all modules in the final Gradle project. It specifies which Android Gradle Plugin version to use and locations of java plugins. The locations are a combination of online repositories and java plugins inside of this project.
`launcherTemplate.gradle`	In the exported project, `root/launcher/build.gradle` folder	Instructions on how to build the Android application. This includes bundling, signing, and whether to split the apk. It depends on the unityLibrary project and outputs either an .apk file or an app bundle.
`mainTemplate.gradle`	在导出的项目中，`root/unityLibrary/build.gradle` 文件夹	Instructions on how to build Unity as a Library. This outputs an .aar file. You can override the Unity template with a custom template in the Unity Editor. Refer to the Providing a custom Gradle build template section on this page for more details.
`libTemplate.gradle`	因情况而异	If an Android Library Project plug-in doesn’t include a `build.gradle` file, Unity uses the `libTemplate.gradle` file as a template to generate one. After Unity generates the `build.gradle` file, or if one already exists in the plug-in’s directory, Unity copies the plug-in into the Gradle project.
`settingsTemplate.gradle`	In the exported project, `root/settings.gradle` file	Specifies the names of modules that the Gradle build system should include when it builds the project. You can override the Unity template with a custom template in the Unity Editor. Refer to the Providing a custom Gradle build template section on this page for more details.
`gradleTemplate.properties`	In the exported project, `root/gradle.properties` file	Configures the Gradle build system and specifies properties such as the size of the Java virtual machine (JVM) heap

Using a custom Gradle template

To have more control over the Gradle project files that Unity produces, you can override Unity’s default Gradle template files. To do this:

Go to Edit > Project Settings to open the Project Settings window.
Select the Player tab, then open Android Player Settings:
In the Publishing Settings section, enable the checkbox that corresponds to the Gradle project file type you want to create a custom template for. This creates a Gradle project template file and displays the path to the file.
Modify the template file to control the format and contents of the final Gradle project file.

模板变量

You can use the following variables in custom Gradle template files:

可变	描述
DEPS	The list of project dependencies. This is the list of libraries that the project uses.
APIVERSION	The API version to build for. Unity sets the and TARGETSDKVERSION to the same value (Target API Level in the Android Player Settings).
MINSDKVERSION	The minimum API version that supports the application.
BUILDTOOLS	The SDK build tools to use.
TARGETSDKVERSION	The API version to target. Unity sets the and APIVERSION to the same value (Target API Level in the Android Player Settings).
APPLICATIONID	Android Application ID. For example, com.mycompany.myapp.
MINIFY_DEBUG	Indicates whether to minify debug builds.
PROGUARD_DEBUG	Indicates whether to use ProGuard for minification in debug builds.
MINIFY_RELEASE	Indicates whether to minify release builds.
PROGUARD_RELEASE	Indicates whether to use ProGuard for minification in release builds.
USER_PROGUARD	Specifies a custom ProGuard file to use for minification.
SIGN	Complete the signingConfigs section if this build is signed.
SIGNCONFIG	Indicates whether the build is signed. If this property is set to `signingConfig.release`, the build is signed.
DIR_GRADLEPROJECT	Unity 创建 Gradle 项目的目录。
DIR_UNITYPROJECT	The directory of your Unity project.
PLAY_ASSET_PACKS	Specifies the asset packs to include in your application.

Custom settingsTemplate.gradle files can also contain the following variables:

可变	描述
INCLUDES	The list of Android Library plug-ins to include in the Gradle project.

Custom gradleTemplate.properties files can also contain the following variables:

可变	描述
JVM_HEAP_SIZE	The maximum size of the Java virtual machine (JVM) heap.
STREAMING_ASSETS	The list of files in the Steaming Assets folder that Gradle shouldn’t compress.
ADDITIONAL_PROPERTIES	Contains additional properties for the application. This includes: • The Gradle template version. • The path to the Unity project. • If the application uses the Android App Bundle publishing format, a flag that indicates to keep native libraries compressed.

Modifying the exported Gradle project using C#

To modify the Gradle project after Unity assembles it, create a class that inherits from IPostGenerateGradleAndroidProject and override the OnPostGenerateGradleAndroidProject function. This function receives the path to the unityLibrary module as a parameter and you can use it to reach the application’s manifest and resources through C# scripting.

Warning: Unity now uses an incremental build pipeline which means Unity reuses the same Gradle project for consecutive builds. This means that any modifications you do using this API accumulate since Unity no longer creates a new Gradle project for every build. For example, if you use this API to add an additional file to the Gradle project, the first build works as expected, but during the second build the file already exists. A second example is if you use this API to add a permission to a particular file. Each successive build adds another entry for the permission. It is crucial to make sure that modifications you want to make aren’t already present in the build.

Building and delivering for Android

Override the Android App Manifest

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