在 build.gradle 文件中添加以下代码：

android {
    ...
    // Enabling Gradle parallel builds should speed up your build.
    // However, in some rare cases, parallel builds can cause issues with the compilation of multi-module projects.
    // If you are experiencing issues with compilation, un-comment the following line to disable Gradle parallel builds.
    // https://developer.android.com/studio/build/optimize-your-build#parallelize_your_builds
    // org.gradle.parallel=false

    // Enabling separate module compilation allows incremental compilation and faster builds.
    // However, in rare cases, it can cause issues with module dependencies and/or the build order.
    // If you are experiencing issues with dependencies or build order, un-comment the following line to disable this feature.
    // https://developer.android.com/studio/build/optimize-your-build#separate_module_compilation
    // android.enableSeparateAnnotationProcessing=false
    
    // Fixing issue with release build getting stuck on transforming .aar file.
    // https://stackoverflow.com/questions/40422717/android-release-build-stuck-transforming-aar-file
    configurations.all {
        resolutionStrategy.eachDependency { details ->
            if (details.requested.group == "com.android.support"
                    && !details.requested.name.contains("multidex")) {
                details.useVersion "26.1.0"
            }
        }
    }
    ...
}

其中，针对发布版卡在转换 .aar 文件的问题，我们需要添加这段代码：

configurations.all {
    resolutionStrategy.eachDependency { details ->
        if (details.requested.group == "com.android.support"
                && !details.requested.name.contains("multidex")) {
            details.useVersion "26.1.0"
        }
    }
}

这段代码的作用是：

• 解决版本兼容性问题，将所有依赖项的版本都强制设置为 26.1.0 版本
• 排除 Multidex 库，因为它的版本不同，因此不需要强制使用 26.1.0 版本

通过这些修改，我们应该能够避免 Build 期间卡在转换 .aar 文件的情况。