CODEWITHSUNDEEP
androidfirebasefirebase-realtime-databasekotlin
Lcross Portugal
Lcross Portugal

Reputation: 73

Get the value from a single field from my firebase db

Well using Koltlin i'm trying to do a very simple thing, so i thought... i want to set a textview.text with the value of the "file" field i stored in firebase database. this is my database :

enter image description here

I get the single user related content but like this 

key - enGKzLMIE0czXUWrcUeCnfKLQ7r1 value: {file=https://firebasestorage.googleapis.com/v0/b/lci9project.appspot.com/o/Avatars%2Fde4d49b5-20e7-4801-80d0-2458aafc5d23?alt=media&token=ffd9ab4f-73c7-49b5-9090-b2c5ff05e3e1, userid=Lasyyyl}

with this code:

val uidref= FirebaseAuth.getInstance().currentUser?.uid
    FirebaseDatabase.getInstance().reference.child("users/$uidref")
        .addListenerForSingleValueEvent(object : ValueEventListener {
            override fun onCancelled(p0: DatabaseError) {
            }

            override fun onDataChange(dataSnapshot: DataSnapshot) {
                val key = dataSnapshot.getKey()
                val value = dataSnapshot.getValue()
               println("key - $key value: $value")

But i cant seem to get just the "file" value ...

Upvotes: 1

Views: 1417

Answers (2)

cutiko
cutiko

Reputation: 10497

If you only want the file Strong there are 2 options

datasnapshot.getChild("file").getValue(String.class)

Or you can just ask for the file attribute

...reference.child("users/$uidref").child("file")
//You can also "users/$uidref/file"

Upvotes: 1

Peter Haddad
Peter Haddad

Reputation: 80914

To get the value of the file change the following:

val value = dataSnapshot.getValue()

Into this:

val value = dataSnapshot.child("file").getValue(String::class.java)

Upvotes: 1

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