How to add data to firebase realtime database on android using Kotlin?

Question

When I upload data to the fire base realtime database it uploads everything perfectly but when I register a new user the previous users data gets deleted every time a new user is created

this is the code I use to upload the data:

private fun uploadUserDataToDatabase(email: String) {

    var uid = mAuth.currentUser?.uid
    var user = User(email)

    myRef.child(uid!!).setValue(user)

}

This is what the data base looks like after a user has registered:

This is what the database looks like after a nother user registers:

How do i get it to not delete the previous user everytime a new user is registered?

if i change it to

myRef.child(uid!!).push.setValue(user)

it uploads the data twice and looks like this:

I am not an expert in firebase-realtime-database, but in cloud-firestore there is a function .add() which does not override the old value. So I would try .addValue() instead of .setValue() — Andrew
– Andrew, Commented Nov 9, 2020 at 14:41
That last screenshot looks as expect when you call push(). If tht is not what you want, edit your question to show the JSON you want to get. — Frank van Puffelen
– Frank van Puffelen, Commented Nov 9, 2020 at 15:19
In the first two screenshots, there are two different UIDs, I cannot see any reason why one of them is deleted unless you are especially doing it in your code. — Alex Mamo
– Alex Mamo, Commented Nov 9, 2020 at 18:17

Wahdat Jan · Accepted Answer · 2020-11-09 14:57:58Z

1

myRef.child(uid!!).push().setValue(user)

answered Nov 9, 2020 at 14:57

Wahdat Jan

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11 Comments

Gino Sesia Over a year ago

if i change it to that it uploads the data twice. i've added it to the question so you can see

Gino Sesia Over a year ago

no because as soon as i register another user id deletes the previous users data

Wahdat Jan Over a year ago

u added to ur question thats not deleting

Gino Sesia Over a year ago

i dont understand

Wahdat Jan Over a year ago

what u want then?

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