CODEWITHSUNDEEP
androidfirebasekotlinnullpointerexception
Morozov
Morozov

Reputation: 5260

Get KotlinNullPointerException when open initial fragment

Get KotlinNullPointerException when open initial fragment when init my uid:

fun setInitialData() {
        firebaseUser = FirebaseAuth.getInstance().currentUser
        databaseReference = FirebaseDatabase.getInstance().reference
        uid = firebaseUser!!.uid

But if I replace initialization on firebaseUser?.uid database data will not load immediately. So understand this the right approach? Also i understand how extra the decision to do some pause before data is loaded?

Upvotes: 2

Views: 96

Answers (2)

Alex Mamo
Alex Mamo

Reputation: 138969

According to the official documentation regarding FirebaseUser's getCurrentUser() method:

Returns the currently signed-in FirebaseUser or null if there is none.

And to answer your question:

So understand this the right approach?

No, you need to always use getCurrentUser() != null to check if a user is signed in or not.

Also i understand how extra the decision to do some pause before data is loaded?

There is no need to pause something in this case.

Upvotes: 1

Thaer97
Thaer97

Reputation: 13

Firebase auth can't be initialized when an activity or a fragment is created as it takes time to become responsive. Try to pass it in a button click or anywhere other than oncreate.

Upvotes: 0

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