Android Studio 運行出現 Multiple dex files define Landroid/support/annotation/AnimRes;解決方法

<span style="font-family: Arial, Helvetica, sans-serif;">Error:Execution failed for task ':app:dexDebug'.  </span>

> com.android.ide.common.internal.LoggedErrorException: Failed to run command:  
    E:\DevResources\sdk\build-tools\21.1.2\dx.bat --dex --no-optimize --output E:\AS_Workspace\FutureCity\app\build\intermediates\dex\debug --input-list=E:\AS_Workspace\FutureCity\app\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/annotation/AnimRes;  
        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)  

看到這個問題第一眼感覺是support-v4和v7的jar包引起的衝突。

項目依賴了一個google play service的library，上google-play的libs下面找了半天也沒看見v7的影子。

後來F12查看module屬性才發現，尼瑪

問題找到了，就好解決了，把項目中v4支持包刪掉，果然還是maven沒用好啊！

轉自此處