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「Multiple dex files define Lcom/google/android/gms・・・ 」 = 「クリーンビルドせよ」

Posted at

Android Studioで、言われるがままにSDKをアップデートし、
さて、いつもどおりアプリを実行・・・ としようとしたところ・・

UNEXPECTED TOP-LEVEL EXCEPTION:
com.android.dex.DexException: Multiple dex files define Lcom/google/android/gms/appdatasearch/DocumentContents$zza;
	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)

こんなエラーでコケた。

理由はおそらく、GooglePlayServiceのjarファイルが2つあるから。

$ grep -r appdatasearch *
Binary file app/build/intermediates/exploded-aar/com.google.android.gms/play-services-appindexing/7.8.0/jars/classes.jar matches
Binary file app/build/intermediates/exploded-aar/com.google.android.gms/play-services-appindexing/8.1.0/jars/classes.jar matches

ん?なんで2つあるの?
とりあえず一旦全消し。

./gradlew clean assembleDebug

解決

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