How to count the lines of Android App?(Kotlin & Java)

 If you want to know how much code you have written Kotlin, Java and xml,
You need to use git first. If you use it so this code enter in Android studio terminal and you learn it.

wc -l $(git ls-files | grep '.*\.xml')+$(git ls-files | grep '.*\.java')+$(git ls-files | grep '.*\.kt')