android studio 2.2 compress all so files in built apk

Question

After update android studio and plugins, new built apk meets puzzling native problem when launch, I found armeabi/armeabi-v7a so files compressed from 200KB to 10KB. While

Answer 1

Update: Use the official doNotStrip option, https://google.github.io/android-gradle-dsl/current/com.android.build.gradle.internal.dsl.PackagingOptions.html

Thanks to Wayne Cai's answer.

In addition, to disable strip on all so files, you can add following to your build.gradle:

packagingOptions{
    doNotStrip "**/*.so"
}

---

Old answer:

I had the same problem, and can't find any official method to disable this auto strip feature on the internet.

Fortunately, I finally got this work around in build.gradle:

applicationVariants.all { variant ->
    def copyUnstripedJniLibTask = tasks.create(name: "copyUnstripedJniLibFor${variant.name.capitalize()}") << {
        def destDirRoot = new File(projectDir, "build/intermediates/transforms/stripDebugSymbol/${variant.dirName}/folders/")
        if (!destDirRoot.isDirectory()) return

        // the folder contains final so files is something like "stripDebugSymbol/variantName/debug/folders/2000/1f/main/lib/",
        // I don't know how to generate the "2000/1f" part, so I have to search for it.
        // If you got better idea, please comment.
        def list = FileUtils.listFiles(destDirRoot, FileFilterUtils.suffixFileFilter("so"), FileFilterUtils.trueFileFilter());
        if (list.size() <= 0) return

        def destDir = list[0].getParentFile().getParentFile()
        def srcDir = new File(destDir.getAbsolutePath().replace("stripDebugSymbol", "mergeJniLibs"))
        println "Copying unstriped jni libs ..."
        println "    from ${srcDir}"
        println "    to ${destDir}"

        // Copy the unstriped so files to overwrite the striped ones.
        FileUtils.copyDirectory(srcDir, destDir)
    }

    def transformNativeLibsTask = project.tasks.findByName("transformNative_libsWithStripDebugSymbolFor${variant.name.capitalize()}")
    if (transformNativeLibsTask) {
        transformNativeLibsTask.finalizedBy(copyUnstripedJniLibTask)
    }
}

Hope this will solve your problem.