android dex文件过多,意外的最高级别异常：com.android.dex.DexException：定义了多个dex文件...

com.android.ide.common.internal.LoggedErrorException: Failed to run command:

/Users/jghg/Desktop/My App/Android/SDK/android-sdk-mac_86/build-

tools/19.0.1/dx –dex –output /Users/jghg/Desktop/My

App/Eureka/UDA/app/build/libs/app-debug.dex /Users/jghg/Desktop/My

App/Eureka/UDA/app/build/classes/debug /Users/jghg/Desktop/My

App/Eureka/UDA/app/build/dependency-cache/debug /Users/jghg/Desktop/My

App/Eureka/UDA/app/build/pre-

dexed/debug/classes-08979151dd1373bd3f799299d93376d22d4afa46.jar

/Users/jghg/Desktop/My App/Eureka/UDA/app/build/pre-

dexed/debug/classes-167b9d3c5d689abe004c3fa5b0bcb945d3f0fc8e.jar

/Users/jghg/Desktop/My App/Eureka/UDA/app/build/pre-dexed/debug/google-play-

services-ec20f8af7bb457c5095cae1afa0cee722582f198.jar /Users/jghg/Desktop/My

App/Eureka/UDA/app/build/pre-

dexed/debug/support-v4-13.0.0-473d85b8d55c88bfed3404072e6c132f96543429.jar

/Users/jghg/Desktop/My App/Eureka/UDA/app/build/pre-

dexed/debug/support-v4-19.0.1-861cc05365a0e9262c764da37d61e3f93dc16de6.jar

/Users/jghg/Desktop/My App/Eureka/UDA/app/build/pre-

dexed/debug/support-v4-19.0.1-dcc11377c764caea791f711123b8b678f876c3b6.jar

/Users/jghg/Desktop/My App/Eureka/UDA/app/build/pre-

dexed/debug/twitter4j-async-3.0.5-0904cb320186fb23a9a9bf25a048c5bc4ec07bc2.jar

/Users/jghg/Desktop/My App/Eureka/UDA/app/build/pre-

dexed/debug/twitter4j-core-3.0.5-41d2d5805e2d90cf77813a126306c4cbe22583ae.jar

/Users/jghg/Desktop/My App/Eureka/UDA/app/build/pre-

dexed/debug/twitter4j-examples-3.0.5-adc1ee9b037c8061429560e6a5fe89ce8e502db6.jar

/Users/jghg/Desktop/My App/Eureka/UDA/app/build/pre-

dexed/debug/twitter4j-media-

support-3.0.5-37d138cdc631738d13ddb6f4d34c560a9cd8e048.jar

/Users/jghg/Desktop/My App/Eureka/UDA/app/build/pre-

dexed/debug/twitter4j-stream-3.0.5-c96c138ea216b25631a1a8b47520ecaf33f288d8.jar

Error Code: 2 Output: UNEXPECTED TOP-LEVEL EXCEPTION:

com.android.dex.DexException: Multiple dex files define

Lcom/google/ads/AdRequest$ErrorCode; at

com.android.dx.merge.DexMerger.readSortableTypes(DexMerger.java:594) at

com.android.dx.merge.DexMerger.getSortedTypes(DexMerger.java:552) at

com.android.dx.merge.DexMerger.mergeClassDefs(DexMerger.java:533) at

com.android.dx.merge.DexMerger.mergeDexes(DexMerger.java:170) at

com.android.dx.merge.DexMerger.merge(DexMerger.java:188) at

com.android.dx.command.dexer.Main.mergeLibraryDexBuffers(Main.java:439) at

com.android.dx.command.dexer.Main.runMonoDex(Main.java:287) at

com.android.dx.command.dexer.Main.run(Main.java:230) at

com.android.dx.command.dexer.Main.main(Main.java:199) at

com.android.dx.command.Main.main(Main.java:103)