AndroidStudio 導入imageloader項目lib包，錯誤處理

使用AndroidStudio時候導入開源項目ImageLoader lib包時，出現錯誤 

Error:Execution failed for task ':app:dexDebug'.
> com.android.ide.common.internal.LoggedErrorException: Failed to run command:
E:\android_studio\sdk_studio\android-sdk-windows\build-tools\21.1.1\dx.bat --dex --no-optimize --output F:\github_workspace\DailyTest\app\build\intermediates\dex\debug --input-list=F:\github_workspace\DailyTest\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/v4/accessibilityservice/AccessibilityServiceInfoCompat$AccessibilityServiceInfoVersionImpl;
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:302)
at com.android.dx.command.dexer.Main.run(Main.java:245)
at com.android.dx.command.dexer.Main.main(Main.java:214)
at com.android.dx.command.Main.main(Main.java:106)

解決以下：在app的 build.gradle中添加全部support包
configurations {
    all*.exclude group: 'com.android.support', module: 'support-v4'

是因爲並非只有一個擴展項目 導入support-4，須要統一管理。