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

There's an undocumented method 'doNotStrip' in packagingOptions, just add following lines in your build.gradle

packagingOptions{
    doNotStrip "*/armeabi/*.so"
    doNotStrip "*/armeabi-v7a/*.so"
    doNotStrip "*/x86/*.so"
}

update: it's in 2.3 document.