Put new value or new card view in xml using Firebase Config [closed]

I am adding images, text as a card view in my app And I want to users also add card view using entered text and uploaded images but my problem is Trying to add card view with firebase config because it will add new items without update the app in the play store. I browsed on the internet about firebase config some tutorials about only updating old values to new values, but I want to add new values without updating old values. Please help me I want full code about firebase config to add a new item without update old values. This is my question only about how to add or to put new value or new card view in the android app using firebase config. help me.

Read more here: https://stackoverflow.com/questions/68434652/put-new-value-or-new-card-view-in-xml-using-firebase-config

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