What's the difference between these 2 Signature Version options?

[James_Watson]

Hi,

I have an Android project in Android Studio 3.2.1.
When I try to generate a signed APK for this project, I have 2 check boxes about Signature Versions.
Check the screenshot as below, please.

Now I wonder what the difference between these two options and whether I should check all or any one of them.

Thanks in advance.

 

[GameTheory]

You should have both checked. Here's an explanation of the two...

https://medium.com/@dhuma1981/understanding-new-apk-signature-scheme-v2-b705178f4d60