Category "data-retrieval"

How can i get the value inside the child and put it on a array

heres a image of my database: heres my code Query countQuery = databaseReference.child("evacuation").orderByChild("evacuationNumber"); List<Places> plac

view config getter callback for component 'div' must be a function (received 'undefined'). Make sure to start component names with a capital letter

Error is: Invariant Violation: view config getter callback for component 'div' must be a function (received 'undefined'). Make sure to start component names wit