Android Studio下“Error:Could not find com.android.tools.build:gradle:2.2.1”的解决方法

ref from:

Android Studio下“Error:Could not find com.android.tools.build:gradle:2.2.1”的解决方法 http://blog.csdn.net/klovesq/article/details/45576635
错误：

Error:Could not find com.android.tools.build:gradle:2.2.1.

Searched in the following locations:
file:/D:/Program Files/Android/android-studio/gradle/m2repository/com/android/tools/build/gradle/2.2.1/gradle-2.2.1.pom
file:/D:/Program Files/Android/android-studio/gradle/m2repository/com/android/tools/build/gradle/2.2.1/gradle-2.2.1.jar
https://jcenter.bintray.com/com/android/tools/build/gradle/2.2.1/gradle-2.2.1.pom

https://jcenter.bintray.com/com/android/tools/build/gradle/2.2.1/gradle-2.2.1.jar

后来尝试后找到的解决方法为：

1、进入file:/D:/Program Files/Android/android-studio/gradle/m2repository/com/android/tools/build/gradle/，查看当前已有内容如下



2、于是在build.gradle中做如下修改



3、sync后解决。

附：

gradle plugin version for as 3.0 beta2:



gradle plugin version for as 2.3.3:



build tools version: