'GitHub not showing languages used in repository

I uploaded my android studio project in java on GitHub but it is not showing languages section. How do I add languages section. And why GitHub failed to detect languages used in repository?

Repository link - https://github.com/QAZIMAAZARSHAD/Bank-Android-App

https://i.stack.imgur.com/6C3il.jpg



Solution 1:[1]

These files are considered documentation by Linguist because they're in the app/ folder. You can use the following.

make a file name called .gitattributes this file will override that behavior and paste the following in that file.

app/* linguist-documentation=false
app/* linguist-vendored

Sources

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Source: Stack Overflow

Solution Source
Solution 1