Error:Execution failed for task ':app:preDexDebug'.java
> com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.8.0_51\bin\java.exe'' finished with non-zero exit value 1android
出現這個是編譯的時候出現重複的jar包致使的。app
或者你的jar包和系統預設的重複了,把jar包一個一個刪掉調試下。ide