Android Gradle偶遇 Ensure that you have installed a JDK (not just a JRE) and configured your JAVA_HOM

从GitHub上找一个视频录制的项目，down下来报这种错误：

Ensure that you have installed a JDK (not just a JRE) and configured your JAVA_HOME system variable to point to the according directory.

真是莫名其妙，JDK绝对是有的。解决方案：

修改

build.gradle

中

dependencies {        classpath 'com.android.tools.build:gradle:2.3.3'    }

gradle 版本号必须与当前的一致。