java - How to check if a value exists in firebase database - android

Question

I am new to firebase via Android(Java) and was wondering how to check if a user already exists in a database of the following format:

    gdb-2fbgg{

      users{


         Michael{
              age: 20
              height: 150
              name: Michael
                }


         Bob{
              age: 20
              height: 150
              name: Bob
                }
       }
}

For example upon a button press, I would like to check the firebase to see if the username "Michael" exists ( first level michael - not "michael" within object michael.

Thank you

Answer 1

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