Hello World项目构建具有依赖性错误

Question

之前有没有人遇到过这个问题？

当我构建一个HelloWorld示例时，我收到以下错误：

  

错误：配置项目＆＃39;：app＆＃39;发生了问题   ＆GT;无法解析配置的所有依赖项＆＃39;：app：_debugApkCopy＆＃39;。
  ＆GT;模块版本MyApplication：app：unspecified，configuration＆＃39; _debugApkCopy＆＃39;声明对配置的依赖＆＃39;默认＆＃39;未在MyApplication的模块描述符中声明：app：unspecified

以下是我的build.grade文件：

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

buildscript {
    repositories {
        mavenCentral()
        maven{url "https://jitpack.io"}
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:2.2.3'

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

allprojects {
    repositories {
        mavenCentral()
    }
}

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