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Building a Standalone Static Library for Android with Gradle / Android Studio

I have migrated my NDK based app from ant command line to Android Studio.

Android Studio is layered on top of Gradle. Gradle calls CMake to generate C ++ code.

What I'm looking for is a way to create just a set of static .a files for android targets armv7, arm64, x86, etc.

Android Studio projects target complete applications.

Is there a way to make Gradle (or AStudio) only build static libs (.a) without building apps or shared library?

I am using all the latest Android stuff under Linux: Android Studio 3.0 canary4. NDK 15.0.4075724

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You can create static library in Android Studio and Gradle in two ways:



  • Adding to your Android.mk module include $(BUILD_STATIC_LIBRARY)

    using either ndk-build or gradle -experimental plugin.

  • Adding to your CMakeLists.txt

    add_library(mylib STATIC
    source_file1.cpp
    source_file2.
    ... )

    using Android Studio 2.3+ and adding to build.gradle module

    android{
    defaultConfig{
        externalNativeBuild{
            cmake{
                \\ add cmake parameters here if you have some
            }
        }
    }
}

    and then click Sync Gradle Files. But always remember that you cannot package (add) the built-in static library to your app.apk and hence you cannot load the cpp code from java code. You can only load shared libraries into your android app.

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