CODEWITHSUNDEEP
androidfirebasefirebase-realtime-database
Baseem
Baseem

Reputation: 51

how to get the pushed key using its child in android firebase

enter image description here

I want to get the pushed key by the help of its child value

Upvotes: 0

Views: 400

Answers (2)

Biswanath Maity
Biswanath Maity

Reputation: 170

You can use this also 

DatabaseReference mDatabase = FirebaseDatabase.getInstance().getReference();
Query query =  mDatabase.child("suppliersdata");

 query.orderByChild("agencyname").equalTo("Babaji").addValueEventListener(new ValueEventListener() {
        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {
            for (DataSnapshot childSnapshot: dataSnapshot.getChildren()) {
                Log.i("db", "onDataChange: Key : " + childSnapshot.getKey());
            }
        }

        @Override
        public void onCancelled(DatabaseError databaseError) {
            throw databaseError.toException(); // never ignore errors
        }
    });

Upvotes: 0

Frank van Puffelen
Frank van Puffelen

Reputation: 599131

Say you have the agency name, then you can create a Firebase Database query to find the matching child nodes with that agency name:

DatabaseReference ref = FirebaseDatabase.getInstance();
Query query = ref.orderByChild("agencyname").equalTo("Babaji");
query.addChildEventListener(new ChildEventListener() {
  @Override
  public void onChildAdded(DataSnapshot dataSnapshot, String previousChildName) {
    Log.d(TAG, "onChildAdded:" + dataSnapshot.getKey()+" "+ dataSnapshot.getChild("agencyname").getValue());
  }
  ...

The onChildAdded method above will be called for every node with agencyname equal to Babaji.

I recommend spending some more time in the Firebase documentation, specifically the sections on dealing with lists of data and on querying.

Upvotes: 1

Related Questions