Android 无法解析gradle中的测试运行程序依赖项

我正在android studio中创建新项目，但在创建项目后，它显示以下错误：

ERROR: Failed to resolve: androidx.test.espresso:espresso-core:3.2.1
Show in Project Structure dialog
Affected Modules: app

ERROR: Failed to resolve: androidx.test:runner:1.2.1
Show in Project Structure dialog
Affected Modules: app

以下是我的gradle文件依赖项：

app.gradle

dependencies {

def lifecycle_version = "2.0.0"
def room_version = "2.2.0-alpha01"

implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.appcompat:appcompat:1.0.2'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
implementation 'com.google.android.material:material:1.0.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.1'
androidTestImplementation 'androidx.test:runner:1.2.1'

//View model and live data
implementation "androidx.lifecycle:lifecycle-extensions:$lifecycle_version"
annotationProcessor "androidx.lifecycle:lifecycle-compiler:$lifecycle_version"

//Room
implementation "androidx.room:room-runtime:$room_version"
annotationProcessor "androidx.room:room-compiler:$room_version"
testImplementation "androidx.room:room-testing:$room_version"

}

注释

buildscript {
repositories {
    google()
    jcenter()

  }
dependencies {
    classpath 'com.android.tools.build:gradle:3.4.2'

    // 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
}

有人请让我知道为什么上述错误是显示，我如何才能克服它。任何帮助都将不胜感激

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谢谢

你的版本来自哪里？官方版本仅适用于3.1.0

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参考这篇

Ohh，我的错误实际上是3.2.0，我将它升级到了错误的3.2.1版本。