我得到例外：

Error:Execution Failed for task ':app:dexDebug'.
> com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command '/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home/bin/java'' finished with non-zero exit value 2

在我将Google Play服务更新为7.5.0之后：

compile 'com.google.android.gms:play-services:7.5.0'

但如果我改回来：

compile 'com.google.android.gms:play-services:7.0.0'

一切正常,如果我在项目中添加Google Cloud后端模块,我也面临同样的问题.