flutter_aliyun_push/example/android/build.gradle

buildscript {
    repositories {
        //        google()
//        jcenter()
        maven {
            url 'http://download.flutter.io'
        }
        maven {
            url 'http://maven.aliyun.com/nexus/content/repositories/releases/'
        }
        maven { url 'https://maven.aliyun.com/repository/google' }
        maven { url 'https://maven.aliyun.com/repository/jcenter' }
        maven { url 'http://maven.aliyun.com/nexus/content/groups/public' }
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.0'
    }
}

allprojects {
    repositories {
        //        google()
//        jcenter()
        maven {
            url 'http://download.flutter.io'
        }
        maven {
            url 'http://maven.aliyun.com/nexus/content/repositories/releases/'
        }
        maven { url 'https://maven.aliyun.com/repository/google' }
        maven { url 'https://maven.aliyun.com/repository/jcenter' }
        maven { url 'http://maven.aliyun.com/nexus/content/groups/public' }
    }
}

rootProject.buildDir = '../build'
subprojects {
    project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
    project.evaluationDependsOn(':app')
}

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