Styjun

Implemented in the application firebase authentication. As well as the ability to add and delete records. But when I go with another account, the records are the same everywhere.

Q: how can I create my own records for each authorized user?

Now have smth like this:

As I understood from the comment I need to add another field to my structure: "users". And ultimately get type target-list - > users - > targets

But for example in my main activity I select as follows:
databaseReference = FirebaseDatabase.getInstance().getReference("targets")

How do I understand here I have to change the structure?

UPD:
I tried to to next:

private fun updateListData() 
 val uid = FirebaseAuth.getInstance().currentUser?.uid ?: ""
 databaseReference = FirebaseDatabase.getInstance().getReference("targets").child(uid)
 getTargetsFromDb()

and in getTargetsFromDb():

private fun getTargetsFromDb() 
 databaseReference?.addValueEventListener(object : ValueEventListener 
 override fun onDataChange(dataSnapshot: DataSnapshot) 
 for (targetSnapshot in dataSnapshot.children) 
 val target = targetSnapshot.getValue(Target::class.java)
 target?.let targetList.add(it) 
 
 recyclerView?.adapter = adapter
 

 override fun onCancelled(databaseError: DatabaseError) 
 Log.d("some", "Error trying to get targets for $databaseError.message")
 
 )

And get next structure:

Accodring to your comments and messages, you want to create targets for each user separately. Using your actual structure you have the users and targets separately. To solve this, I recommend you another database structure that looks like this:

Firebase-root
 |
 --- targets
 |
 --- uid
 |
 --- pushedId
 | |
 | --- description: "some description"
 | |
 | --- name: "Vadim"
 |
 --- pushedId
 |
 --- description: "another description"
 |
 --- name: "Morozov"

To get all the targets that corresponde to a particular user, simply use the following query:

val uid = FirebaseAuth.getInstance().currentUser!!.uid
val rootRef = FirebaseDatabase.getInstance().getReference()
val uidRef = rootRef.child("targets").child(uid)
uidRef.addListenerForSingleValueEvent(/* ... */);

An alternative database structure might be:

Firebase-root
 |
 --- targets
 |
 --- pushedId
 | |
 | --- description: "some description"
 | |
 | --- name: "Vadim"
 | |
 | --- uid: "VDMQ ... 0nw1"
 |
 --- pushedId
 |
 --- description: "another description"
 |
 --- name: "Svetlana"
 |
 --- uid: "eluk ... PJu1"

As you can see, it has a level less than the previous structure. Now, to get all the targets that corresponde to a particular user, please use the following query:

val uid = FirebaseAuth.getInstance().currentUser!!.uid
val rootRef = FirebaseDatabase.getInstance().getReference()
val targetsRef = rootRef.child("targets").orderByChild("uid").equalTo(uid)
targetsRef.addListenerForSingleValueEvent(/* ... */);

So it's up to you to decide which one is better for you.