无法获得未知财产＆＃39;删除＆＃39;对于根项目＆＃39; MyApplication3＆＃39;的类型为org.gradle.api.Project

Question

Android studio 3.1.2 - ＆gt;新项目 - ＆gt;构建失败，并在日志中出现以下问题：

Could not get unknown property 'Delete' for root project 'MyApplication3' of type org.gradle.api.Project.
Open File

这是build.gradle：

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

buildscript {

repositories {
    google()
    jcenter()
}
dependencies {
    classpath 'com.android.tools.build:gradle:3.1.2'


    // NOTE: Do not place your application dependencies here; they belong
    // in the individual module build.gradle files
}
}

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

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

最后三行是问题所在。它默认添加。

如何解决这个问题？

Answer 1

尝试通过此代码：在app Laval app.gradle中，而不是在顶层。

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