意外的顶级异常:多个dex文件定义

Question

我已经为我的android项目添加了第三个lib.当我用ant打包时,会出现一些错误:

 [dx] UNEXPECTED TOP-LEVEL EXCEPTION:
   [dx] com.android.dex.DexException: Multiple dex files define Landroid/support/v4/accessibilityservice/AccessibilityServiceInfoCompat$AccessibilityServiceInfoVersionImpl;
   [dx]     at com.android.dx.merge.DexMerger.readSortableTypes(DexMerger.java:593)
   [dx]     at com.android.dx.merge.DexMerger.getSortedTypes(DexMerger.java:551)
   [dx]     at com.android.dx.merge.DexMerger.mergeClassDefs(DexMerger.java:532)
   [dx]     at com.android.dx.merge.DexMerger.mergeDexes(DexMerger.java:169)
   [dx]     at com.android.dx.merge.DexMerger.merge(DexMerger.java:187)
   [dx]     at com.android.dx.command.dexer.Main.mergeLibraryDexBuffers(Main.java:439)
   [dx]     at com.android.dx.command.dexer.Main.runMonoDex(Main.java:287)
   [dx]     at com.android.dx.command.dexer.Main.run(Main.java:230)
   [dx]     at com.android.dx.command.dexer.Main.main(Main.java:199)
   [dx]     at com.android.dx.command.Main.main(Main.java:103)

我检查了这个问题,并发现这一点:Android的工作室-意外的顶级例外: 但我的Eclipse项目不具备的build.gradle文件,我怎么能解决问题呢？

Answer 1

这可能是由您的应用程序项目和带有android-support-v4 jar的库项目引起的.如果库项目已经将此jar作为依赖项,那么您需要将其从应用程序项目类路径中排除.