错误提示：
Information:Gradle tasks [:app:clean, :app:generateDebugSources, :app:generateDebugAndroidTestSources, :app:prepareDebugUnitTestDependencies, :app:mockableAndroidJar, :app:assembleDebug]
:app:clean
:app:preBuild UP-TO-DATE
:app:preDebugBuild UP-TO-DATE
:app:checkDebugManifes
。。。。。。
:FlycoTabLayout_Lib:packageReleaseRenderscript UP-TO-DATE
:FlycoTabLayout_Lib:transformResourcesWithMergeJavaResForRelease UP-TO-DATE
:FlycoTabLayout_Lib:transformNative_libsWithMergeJniLibsForRelease UP-TO-DATE
:FlycoTabLayout_Lib:transformNative_libsWithSyncJniLibsForRelease UP-TO-DATE
:FlycoTabLayout_Lib:bundleRelease UP-TO-DATE
:app:preReleaseBuild UP-TO-DATE
:app:prepareCodetestFlycoTabLayout_Lib150Library
:app:generateDebugAndroidTestSources
:app:preDebugUnitTestBuild UP-TO-DATE
:app:prepareDebugUnitTestDependencies
:app:mockableAndroidJar UP-TO-DATE
:app:compileDebugJavaWithJavac
注: 某些输入文件使用或覆盖了已过时的 API。
注: 有关详细信息, 请使用 -Xlint:deprecation 重新编译。
注: E:codetestappsrcmainJavacom
eipinappactivityEditInformationActivity.java使用了未经检查或不安全的操作。
注: 有关详细信息, 请使用 -Xlint:unchecked 重新编译。
:app:compileDebugNdk UP-TO-DATE
:app:compileDebugSources
:app:buildInfoDebugLoader
:app:transformClassesWithExtractJarsForDebug
:app:generateDebugInstantRunAppInfo
:app:transformClassesWithDexForDebug
Allocated dexExecutorService of size 1
Dexing E:codetestappuildintermediatesexploded-aarcom.Android.supportsupport-v423.1.1jarslibsinternal_impl-23.1.1.jar took 3347
Dexing E:codetestappuildintermediatesexploded-aarcom.android.supportsupport-v423.1.1jarsclasses.jar took 7057
Dexing E:codetestappuildintermediatesexploded-aarcom.flyco.roundviewFlycoRoundView_Lib1.1.2jarsclasses.jar took 431
Dexing E:codetestappuildintermediatesexploded-aarcom.android.supportappcompat-v723.1.1jarsclasses.jar took 4074
Dexing E:codetestappuildintermediatesincremental-classesdebugclasses.jar took 338
Dexing E:codetestappuildintermediatesincremental-runtime-classesdebuginstant-run.jar took 1768
Dexing E:codetestappuildintermediates ransformsinstantRundebugfolders15main took 5800
Dexing E:codetestappuildintermediatesexploded-aarcom.bigkoopickerview2.0.8jarsclasses.jar took 961
Dexing C:Userszyy.gradlecachesmodules-2files-2.1com.jakewhartonutterknife7.0.1d5d13ea991eab0252e3710e5df3d6a9d4b21d461utterknife-7.0.1.jar took 1297
Dexing E:SDK_JDKandroid-sdkextrasandroidm2repositorycomandroidsupportsupport-annotations23.1.1support-annotations-23.1.1.jar took 222
Dexing E:codetestappuildintermediatesexploded-aarcom.7heaven.ioswidgetiosswitch .5jarslibslibrary_nineoldandroids.jar took 1969
Dexing E:codetestappuildintermediatesexploded-aarcom.7heaven.ioswidgetiosswitch .5jarsclasses.jar took 716
Dexing C:Userszyy.gradlecachesmodules-2files-2.1com.nineoldandroidslibrary2.4.0e9b63380f3a242dbdbf103a2355ad7e43bad17cblibrary-2.4.0.jar took 2242
Error:Error converting bytecode to dex:
Cause: com.android.dex.DexException: Multiple dex files define Lcom/nineoldandroids/animation/Animator$AnimatorListener;
:app:transformClassesWithDexForDebug FAILED
Error:Execution failed for task ‘:app:transformClassesWithDexForDebug’.
com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process ‘command ‘E:SDK_JDKjdkinjava.exe” finished with non-zero exit value 2
Information:BUILD FAILED
Information:Total time: 48.031 secs
Information:2 errors
Information:0 warnings
Information:See complete output in console
问题原因：
1.引用的github开源项目，module之间有冲突的jar（主要是v4 v7包冲突版本不同）
2.提示类似错误，可能是mainfist配置的activity，服务等信息有重复添加
3.res下的xml里有错误，复制来的布局中引用了其自定义的布局。或者引用的图片
此类问题解决办法:
1.删除冲突的引用
2.大多数问题解决办法是clean project
3.逐个检查下xml文件
4.将引用的lib 只需要将两个冲突中的一个compile改成provided就行。
具体操作请转到
http://blog.csdn.net/hyr83960944/article/details/41825087
