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嘗試創建新的Google Cardboard應用程序時,我無法讓我的應用程序導入cardboard.jar並識別CardboardActivity。我已將cardboard.jar
和libprotobuf-java-2.6-nano.jar
放在libs目錄中,並且build.gradle將行compile fileTree(dir: 'libs', include: ['*.jar'])
作爲依賴項。這是怎麼回事?無法在Android Studio中導入CardboardActivity?