Why the APK generated by Eclipse is smaller than the one by Android Studio?

[Thomas_George]

Hi,

I have a very simple Android project in Eclipse. I generated an APK for the project. Its size is only 180 KB.

But after I imported this Android project into Android Studio 3.2.1, I found that the APK generated by Android Studio is almost 500 KB.

I wonder that why the APK by Android Studio for the same project is so bigger.

Thank you in advance.