Could not resolve all files for configuration ':classpath'.Could not find com.android.tools.

升级到Android Sutido 3.0后，跑测之前的Model的main()方法方法时报错：

Error:Gradle: A problem occurred configuring root project ‘MyApplication’.

Could not resolve all files for configuration ‘:classpath’.
Could not find com.android.tools.build:gradle:3.0.0.
Searched in the following locations:
https://jcenter.bintray.com/com/android/tools/build/gradle/3.0.0/gradle-3.0.0.pom
https://jcenter.bintray.com/com/android/tools/build/gradle/3.0.0/gradle-3.0.0.jar
Required by:
project :
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解决：
修改Project的build.gradle（注意：不是App的build.gradle），两处加上google()

buildscript {
repositories {
jcenter()
google()
}
dependencies {
classpath ‘com.android.tools.build:gradle:3.0.0’
}
}

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

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