关于AS报错“Could not find com.android.tools.build:gradle:4.1.2.”的解决办法

错误详细信息如图所示

1.打开build.gradle (Project:Notes-master)

2.将其中内容替换为如下代码（使用阿里云镜像）

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        google()
        jcenter()
        maven { url "http://maven.aliyun.com/nexus/content/groups/public/" }
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:4.1.2'
    }
}

allprojects {
    repositories {
        google()
        jcenter()
        maven { url "http://maven.aliyun.com/nexus/content/groups/public/" }
    }
}

3.点击Sync Now 同步gradle，稍等便可

至此，问题解决