Unity2019及Unity2020打包android的環境配置

2019安卓打包只有gradle模式了，由於谷歌把adt刪了

unity2019能夠自定義gradle模板，國內請把repo地址改爲阿里雲的源

unity2019打apk配置

引擎版本：unity2019.3.7f1

android sdk，我僅保留28,29三個平臺，system-images 僅保留23,29壓縮後是2.5G，Android SDK Tools Version>26.1.1

• platforms
• system-images
• build-tools

jdk提示須要JDK1.8 64位

家裏電腦上安裝的是：openjdk/16，打包會彈出提示版本不匹配，因此仍是請安裝JDK而不是OpenJDK

華爲JDK國內鏡像：https://mirrors.huaweicloud.com/openjdk/

此環境配置打包出來的APK可在mumu模擬器安卓6.0上正常跑

拷貝.gradle到離線環境

在斷網的狀況下，使用unity2018.4.15在打包apk時會報沒法鏈接到遠程的google.xxx，沒法打包出apk，嘗試過從其它電腦拷貝.gradle到打包機上，仍是出現同樣的提示，因此放棄離線的方法。

修改Unity的gradle爲阿里雲

以unity2019.3.7f1爲例，在Unity的安裝目錄下，找到：PlaybackEngines/AndroidPlayer/Tools/GradleTemplates/baseProjectTemplate.gradle

替換這個文件的內容爲以下，重啓Unity進行build，下載一次以後後面build就會很快了。

// GENERATED BY UNITY. REMOVE THIS COMMENT TO PREVENT OVERWRITING WHEN EXPORTING AGAIN

allprojects {
    buildscript {
        repositories {**ARTIFACTORYREPOSITORY**
            maven{ url 'https://maven.aliyun.com/repository/google'}
            //google()
            maven{ url 'https://maven.aliyun.com/repository/jcenter'}
            //jcenter()
        }

        dependencies {
            // If you are changing the Android Gradle Plugin version, make sure it is compatible with the Gradle version preinstalled with Unity
            // See which Gradle version is preinstalled with Unity here https://docs.unity3d.com/Manual/android-gradle-overview.html
            // See official Gradle and Android Gradle Plugin compatibility table here https://developer.android.com/studio/releases/gradle-plugin#updating-gradle
            // To specify a custom Gradle version in Unity, go do "Preferences > External Tools", uncheck "Gradle Installed with Unity (recommended)" and specify a path to a custom Gradle version
            classpath 'com.android.tools.build:gradle:3.4.0'
            **BUILD_SCRIPT_DEPS**
        }
    }

    repositories {**ARTIFACTORYREPOSITORY**
            maven{ url 'https://maven.aliyun.com/repository/google'}
            //google()
            maven{ url 'https://maven.aliyun.com/repository/jcenter'}
            //jcenter()
        flatDir {
            dirs "${project(':unityLibrary').projectDir}/libs"
        }
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}