UNEXPECTED TOP-LEVEL EXCEPTION: com.android.dex.DexException: Multiple dex files define Landroid/su

Error 描述:

Error:Gradle: Execution failed for task ':PPQtrunk:dexDebug'.
> com.android.ide.common.internal.LoggedErrorException: Failed to run command:
 C:\Users\Administrator\AppData\Local\Android\sdk\build-tools\21.1.2\dx.bat --dex --no-optimize --output D:\Android\svn\5.0.0.2 2\5.0.0.2\PPQtrunk\build\intermediates\dex\debug --input-list=D:\Android\svn\5.0.0.2
2\5.0.0.2\PPQtrunk\build\intermediates\tmp\dex\debug\inputList.txt
Error Code:
 2
Output:
 UNEXPECTED TOP-LEVEL EXCEPTION: com.android.dex.DexException: Multiple dex files define Landroid/support/v4/accessibilityservice/AccessibilityServiceInfoCompatIcs; 
  at com.android.dx.merge.DexMerger.readSortableTypes(DexMerger.java:596)
  at com.android.dx.merge.DexMerger.getSortedTypes(DexMerger.java:554)
  at com.android.dx.merge.DexMerger.mergeClassDefs(DexMerger.java:535)
  at com.android.dx.merge.DexMerger.mergeDexes(DexMerger.java:171)
  at com.android.dx.merge.DexMerger.merge(DexMerger.java:189)
  at com.android.dx.command.dexer.Main.mergeLibraryDexBuffers(Main.java:454)
  at com.android.dx.command.dexer.Main.runMonoDex(Main.java:303)
  at com.android.dx.command.dexer.Main.run(Main.java:246)
  at com.android.dx.command.dexer.Main.main(Main.java:215)
  at com.android.dx.command.Main.main(Main.java:106)

问题分析：

引入的工程的android-support-v4.jar版本跟自己工程的android-support-v4.jar的版本不一样。

问题解决：

在工程中使用maven的方式引入 com.android.support:support-v4:22.+

dependencies {
compile fileTree(include: '*.jar', dir: 'libs')
compile 'com.android.support:support-v4:22.+'
}

代替了工程中lib文件夹的jar文件

android-support-v4.jar

吃一堑，长一智：

遇到jar包不兼容的问题，应该使用最新的jar包进行替换。