我想在我的Android应用程序中添加Google Cloud Messaging后端（只是其中一个可用的示例）。为此，我正在关注官方documentation。我正在我的手机上部署（带有Android 5.0.2的三星A5）
在添加后端之前，可以正常部署应用程序。
添加后端后，后端可以正常部署在Google AppEngine开发服务器上，我可以在浏览器中看到它。
但是，当我尝试在我的设备上部署应用程序时，我最终得到了错误。
是否与我的Java版本（1.8）有关？
我注意到堆栈跟踪中提到了dex，所以它可能与method number limit有关吗？我不希望这样，因为它是一个非常小的示例应用程序，我认为我可能没有超过64K方法。
最后，我找到了类似的question，但它没有用。
Information:Gradle tasks [:app:assembleDebug]
:app:preBuild UP-TO-DATE
:app:preDebugBuild UP-TO-DATE
:app:checkDebugManifest
:app:preReleaseBuild UP-TO-DATE
:backend:appengineDownloadSdk
:backend:compileJava UP-TO-DATE
:backend:processResources UP-TO-DATE
:backend:classes UP-TO-DATE
:backend:appengineEndpointsGetClientLibs UP-TO-DATE
:backend:appengineEndpointsExpandClientLibs UP-TO-DATE
:backend:compileEndpointsSrcJava UP-TO-DATE
:backend:processEndpointsSrcResources UP-TO-DATE
:backend:endpointsSrcClasses UP-TO-DATE
:backend:_appengineEndpointsAndroidArtifact UP-TO-DATE
:app:prepareComAndroidSupportAppcompatV72311Library UP-TO-DATE
:app:prepareComAndroidSupportDesign2311Library UP-TO-DATE
:app:prepareComAndroidSupportMediarouterV72220Library UP-TO-DATE
:app:prepareComAndroidSupportRecyclerviewV72311Library UP-TO-DATE
:app:prepareComAndroidSupportSupportV42311Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServices830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesAds830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesAnalytics830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesAppindexing830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesAppinvite830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesAppstate830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesAuth830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesBase830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesBasement830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesCast830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesDrive830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesFitness830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesGames830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesGcm830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesIdentity830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesLocation830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesMaps830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesMeasurement830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesNearby830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesPanorama830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesPlus830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesSafetynet830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesVision830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesWallet830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesWearable830Library UP-TO-DATE
:app:prepareDebugDependencies
:app:compileDebugAidl UP-TO-DATE
:app:compileDebugRenderscript UP-TO-DATE
:app:generateDebugBuildConfig UP-TO-DATE
:app:generateDebugAssets UP-TO-DATE
:app:mergeDebugAssets UP-TO-DATE
:app:generateDebugResValues UP-TO-DATE
:app:generateDebugResources UP-TO-DATE
:app:mergeDebugResources UP-TO-DATE
:app:processDebugManifest UP-TO-DATE
:app:processDebugResources UP-TO-DATE
:app:generateDebugSources UP-TO-DATE
:app:compileDebugJavaWithJavac UP-TO-DATE
:app:compileDebugNdk UP-TO-DATE
:app:compileDebugSources UP-TO-DATE
:app:transformClassesWithDexForDebug
UNEXPECTED TOP-LEVEL EXCEPTION:
Error:Execution failed for task ':app:transformClassesWithDexForDebug'.
> com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command '/Library/Java/JavaVirtualMachines/jdk1.8.0_11.jdk/Contents/Home/bin/java'' finished with non-zero exit value 2
Information:BUILD FAILED
Information:Total time: 2 mins 44.821 secs
Information:1 error
Information:0 warnings
Information:See complete output in console