在 release 构建类型中，根本不指定 signingConfig，您的构建就成功了不签.发布版本不会选择调试版本获得的默认签名配置，因此它应该适用于那些.

In the release build type, don't specify a signingConfig at all, and your build won't be signed. Release builds don't pick up the default signing config that debug builds get, so it should work for those.

有一个讨论关于它的 adt-dev 邮件列表.

There's a discussion on the adt-dev mailing list about it.

请记住，要从 Android Studio 构建，您需要转到 Gradle 任务窗口并选择 assembleRelease 任务；通过Make Project"进行的正常构建实际上并不构建最终的 APK.

Bear in mind that to build from Android Studio, you'll need to go to the Gradle tasks window and choose the assembleRelease task; normal builds via "Make Project" don't actually build the final APK.