关于::app:clean :app:preBuild UP-TO-DATE :app:preDebugBuild UP-TO-DATE,引用jar冲突问题

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:\codetest\app\src\main\java\com\neipin\app\activity\EditInformationActivity.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:\codetest\app\build\intermediates\exploded-aar\com.android.support\support-v4\23.1.1\jars\libs\internal_impl-23.1.1.jar took 3347
Dexing E:\codetest\app\build\intermediates\exploded-aar\com.android.support\support-v4\23.1.1\jars\classes.jar took 7057
Dexing E:\codetest\app\build\intermediates\exploded-aar\com.flyco.roundview\FlycoRoundView_Lib\1.1.2\jars\classes.jar took 431
Dexing E:\codetest\app\build\intermediates\exploded-aar\com.android.support\appcompat-v7\23.1.1\jars\classes.jar took 4074
Dexing E:\codetest\app\build\intermediates\incremental-classes\debug\classes.jar took 338
Dexing E:\codetest\app\build\intermediates\incremental-runtime-classes\debug\instant-run.jar took 1768
Dexing E:\codetest\app\build\intermediates\transforms\instantRun\debug\folders\1\5\main took 5800
Dexing E:\codetest\app\build\intermediates\exploded-aar\com.bigkoo\pickerview\2.0.8\jars\classes.jar took 961
Dexing C:\Users\zyy.gradle\caches\modules-2\files-2.1\com.jakewharton\butterknife\7.0.1\d5d13ea991eab0252e3710e5df3d6a9d4b21d461\butterknife-7.0.1.jar took 1297
Dexing E:\SDK_JDK\android-sdk\extras\android\m2repository\com\android\support\support-annotations\23.1.1\support-annotations-23.1.1.jar took 222
Dexing E:\codetest\app\build\intermediates\exploded-aar\com.7heaven.ioswidget\iosswitch\0.5\jars\libs\library_nineoldandroids.jar took 1969
Dexing E:\codetest\app\build\intermediates\exploded-aar\com.7heaven.ioswidget\iosswitch\0.5\jars\classes.jar took 716
Dexing C:\Users\zyy.gradle\caches\modules-2\files-2.1\com.nineoldandroids\library\2.4.0\e9b63380f3a242dbdbf103a2355ad7e43bad17cb\library-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_JDK\jdk\bin\java.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