unity2019.4+

androidStudio2023.x+

问题1：

cvc-complex-type.2.4.a: 发现了以元素 'base-extension' 开头的无效内容。应以 '{layoutlib}' 之一开头。

解决：第一个Build.gradle更改如下

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

allprojects {
    buildscript {
        repositories {
            google()
            jcenter()
        }

        dependencies {
            classpath 'com.android.tools.build:gradle:4.1.0'
            
        }
    }

    repositories {
        google()
        jcenter()
        flatDir {
            dirs "${project(':unityLibrary').projectDir}/libs"
        }
    }
}

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

 问题二：

Installed Build Tools revision 33.0.0 is cor