Unity3D - failed Build Android AppBundle using Gradle

Question

currently, my game builds successfully if build using Unity's Internal System. Now because I need AppBundle over APK I try to change build system to Gradle like below picture:

However, in Gradle it returns an error.

Could not find method implementation() for arguments [{name=com.google.android.gms.play-services-drive-11.0.4, ext=aar}] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.

Note: I'm using Unity v2017.4.30f1

Any Idea to Solve?

Thank You

Answer 1

Change your mainTemplate.gradle file to something like this:

buildscript {
    repositories {
        jcenter()
        maven { url 'https://maven.google.com' }
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.0'
    }
}

allprojects {
    repositories {
        jcenter()
        maven { url 'https://maven.google.com' }
        flatDir {
            dirs 'libs'
        }
    }
}

If this doesn't work, try to find one that works with your unity version, if you updated unity, this file may become incompatible preventing you from making a gradle build.

An easy fix would be to let unity autogenerate the mainTemplate.gradle file for you, and then applying your changes on the new file:

1) Copy the current contents of Assets/Plugins/Android/mainTemplate.gradle file. (Or simply have source control to show you the diff)

2) Delete the Assets/Plugins/Android/mainTemplate.gradle file.

3) In the Android Player Settings window -> Publishing Settings: Check the "Custom Gradle Template". That will generate a new mainTemplate.gradle file for you.

4) Compare new file with the old one - and apply changes you need to the new file.

Answer 2

It would be great if you please share the build.gradle that's failing to build.

However, just going by the error you received, could you please apply thew plugin "java-library" if not applied already?

Please apply the plugin for "allprojects" if it's a multi-module gradle project. Otherwise, it needs to be added for the root project.

apply plugin: 'java-library'