在 gradle android library kotlin 项目中禁用 METAINF* 生成

The original purpose of .kotlin_module files is to store the package parts mapping to the compiled class files. The compiler uses them to resolve top-level function calls in a library attached to the project. Also, Kotlin reflection uses the .kotlin_module files to construct the top level members metadata at runtime. See more: Improving Java Interop: Top-Level Functions and Properties

Given that, you don't want to disable their generation in library projects, because it might break compilation against the libraries.

相反，你可以在你的应用程序build.gradle中使用packagingOptions来消除重复项，如here所述:

android {
    // ...

    packagingOptions {
        exclude 'META-INF/library_release.kotlin_module'
    }
}

Note: excluding these files from an application APK interferes with reflection at runtime and therefore is is not the best solution either.

Another option is to use unique module names in your libraries:

compileReleaseKotlin.kotlinOptions.freeCompilerArgs += ["-module-name", "my.library.id"]

^{Select 产生输出的任务，然后将输出打包到AAR中.}

或者，更可靠的是，只需 Select 惟一的Gradle模块名称，因为Kotlin模块是根据Gradle项目命名的.