Get KotlinNullPointerException when open initial fragment

Question

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?

@JeelVankhede ok, but as i say, if i use firebaseUser?.uid, I have a problem with uploading data. — Morozov
– Morozov, Commented Oct 21, 2019 at 8:45

a_local_nobody · Accepted Answer · 2019-10-21 12:27:10Z

1

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.

edited Oct 21, 2019 at 12:27

a_local_nobody

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answered Oct 21, 2019 at 9:16

Alex Mamo

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Comments

Thaer97 · Accepted Answer · 2019-10-21 08:43:09Z

0

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.

answered Oct 21, 2019 at 8:43

Thaer97

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1 Comment

Morozov Over a year ago

i tried to init my firebase in onViewCreated. In method : setInitialData(). U can check full code here: gist.github.com/mnewlive/56c4a84eb3ef22f930779e49c710fc4a

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