How to get the build/version number of your Android application?

Question

I need to figure out how to get or make a build number for my Android application. I need the build number to display in the UI.

Do I have to do something with

Answer 1

If you want to use it on xml then add below line on your gradle file:

applicationVariants.all { variant ->
    variant.resValue "string", "versionName", variant.versionName
}

And then use it on your xml like this: