Android Studio 3.0:在Gradle文件中找不到buildToolsVersion

我最近安装了Android Studio(v3.0)的新稳定版本。 然后创build一个新的项目,没有任何问题。 但是看到应用程序级build.gradle文件中没有buildToolsVersion字段。 即使我search了所有项目文件( Ctrl Shift F ),但没有find任何东西!

这是什么意思? 我怎样才能确定什么是我的应用程序模块中的生成工具的版本?


build.gradle(Project):

 // 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:3.0.0' // 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 } 

build.gradle(Module:app):

 apply plugin: 'com.android.application' android { compileSdkVersion 26 defaultConfig { applicationId "ir.e900.androidstudio30" minSdkVersion 15 targetSdkVersion 26 versionCode 1 versionName "1.0" testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } } dependencies { implementation fileTree(dir: 'libs', include: ['*.jar']) implementation 'com.android.support:appcompat-v7:26.1.0' implementation 'com.android.support.constraint:constraint-layout:1.0.2' testImplementation 'junit:junit:4.12' androidTestImplementation 'com.android.support.test:runner:1.0.1' androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1' } 

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