Help me firebase aut chatview problem

English
Hello, I am trying to make a global chat with my application firebase auth but I got stuck How can I carry datachanged data or show the data in the stored!

Turkish
Merhaba ben uygulamam firebase aut ile global chat yapmak için uğraşıyorum ama takıldım
Datachanged veriyi nasıl taşıyabilirim veya nasıl storedeki veriyi göstebilirim

If you had searched the forum before making this topic you might have got your answer.

Pls link ?