tools.jar问题描述
'tools.jar' seems to be not in Android Studio classpath.
Please ensure JAVA_HOME points to JDK rather than JRE.
解决方案
将jar包从%JAVA_HOME%\lib中复制粘贴到Android Studio根目录下的lib中
环境变量问题描述
The Environment variable JAVA_HOME (with a value of C:\Program Files(x86)\Java\jdk1.7.0_51\bin) does not point to a valid JVM instalation
解决方案
JAVA_HOME变量中将JDK后面的\bin删去