Add element to Firestore array

Question

Currently, I have an empty array in Firestore dashboard. And I'm trying to add some item to it. I've followed this, but no result. I don't want to sore and rewrite this element.

My gradle contains:

implementation 'com.google.firebase:firebase-firestore:17.0.4'

and my code:

import com.google.firebase.firestore.FieldValue

...

val documentReference = firestore.collection("events")
                .document(event.firebaseUserUid + "-" + event.title)
    documentReference
                .update("participants", (FieldValue.arrayUnion(FirebaseAuth.getInstance().currentUser!!.uid)) )

But FieldValue.arrayUnion doesn't exists.

natonomo · Accepted Answer · 2018-08-13 17:48:19Z

1

I don't think support for that has actually been added to the Android API, despite its documentation as such on the page you linked.

It's missing from the Android API documentation, but is present in the Web API documentation as well as the Web changelog.

answered Aug 13, 2018 at 17:48

natonomo

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Péter Kovács · Accepted Answer · 2018-08-23 13:45:15Z

0

Newest version of firestore now supports it:

 implementation 'com.google.firebase:firebase-firestore:17.1.0'

answered Aug 23, 2018 at 13:45

Péter Kovács

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