How to read a specific key-value for all the child inside root node in Firebase in Android-CodePudding

I have a list of child nodes inside a root node. I want to read a specific key-value pair which is present inside each child node using Kotlin for Android. How can I achieve that functionality.

For instance here is the list of all child nodes directly attached to the root node :

Here is the child node "azd1" which have STATUS = 1

Here is the second child node "bzi12" with STATUS = 0

I want to write a Kotlin code which returns the status value for each node, along with the reference of child name.

Currently I am doing something like this

 val listener = object : ValueEventListener {
                    override fun onDataChange(snapshot: DataSnapshot) {
                        Timber.d("Values: ${snapshot.value}")
                        }

                    override fun onCancelled(error: DatabaseError) {
                        Timber.d("Error: ${error.message}")
                        }
                }
                databaseRef
                    .addValueEventListener(listener)

                }

but instead of returning status for each child I currently get all the child nodes with all their key-value

CodePudding user response：

Since you are listening to a list of nodes with a value listener, you will need to loop over the children of the resulting snapshot in onDataChange to get to the individual results.

for (childSnapshot in snapshot.children) {
    print(childSnapshot.child("STATUS").value);
}