Error:Execution failed for task ':app:dexDebug'. > com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.7.0_79\bin\java.exe'' finished with non-zero exit value 2java
通常出现这个编译错误 就是 多了一个jar包等等或者缺失了jar包等等 往Messages里面认真看看。android