how to check ionic android version in capacitor code example

Example 1: capacitor change app version

Android - android/app/build.gradle (you're looking for the versionName variable)
iOS - ios/App/App/Info.plist *(you're looking for the CFBundleShortVersionString key)

Example 2: ionic capacitor android

// if you didn't run before
ionic build
// then
npx cap add android
npx cap sync