How to update Firestore RecyclerView Adapter based upon field value changes locally or in database?

Question

I'm trying to reload or update Firestore Recyclerview Adapter (Firebase Ui) based upon field value changes.

In my case I'm querying .whereNotIn("id", list) where list is stored locally and updated frequently which should trigger firestore recyclerview options based upon arraylist value updated.

My code is below:

 postsRef
                .orderBy("id")
                .whereNotIn("id", list) // list is updated frequently so update firesttore recyclervew option
                .whereEqualTo("disabled", false)
                .whereEqualTo("expired", false)
                .whereEqualTo("locality", locality)
                .whereEqualTo("country", country)
                .orderBy("createdAt", Query.Direction.DESCENDING)
                .limit(20)

        val firestoreRecyclerOptions: FirestoreRecyclerOptions<Post> =
            FirestoreRecyclerOptions.Builder<Post>()
                .setQuery(query, Post::class.java)
                .build()

"list" value is changes locally frequently. I want to update firestore RecyclerView options maybe reload based upon list update.

So what's wrong with this code? Have you created an [index](https://stackoverflow.com/questions/50305328/firestore-whereequalto-orderby-and-limit1-not-working)? — Alex Mamo, Apr 18 '22 at 12:42
I'm storing ArrayList value as list locally which is used to query database. Firestore trigger based upon database changes. But I want to update Firestore Recyclerview options based upon local list is updated frequently without recreating Fragment. Yes I have created an index. — Fortray, Apr 18 '22 at 12:48

score 0 · Answer 1 · answered Apr 18 '22 at 12:44

0

The list is updated as the data in the table is updated.

The code I wrote for myself, you can change it according to you.

docRef
                    .whereEqualTo(field, equel)
                    .whereEqualTo(cevapField, cevapdurum)
                    .orderBy("date",query)
                    .addSnapshotListener { querySnapshot, firebaseFirestoreException ->
                        firebaseFirestoreException?.let {
                            Toast.makeText(context, it.message, Toast.LENGTH_LONG)
                                .show()
                           //error
                            return@addSnapshotListener
                        }
                        val listData: MutableList<Any> = mutableListOf()
                        querySnapshot?.let {
                            for (document in it) {
                               //success
                                val data1=document.getString("data1")
                        }
                    }

answered Apr 18 '22 at 12:44

Ömer Seyfettin Yavuzyiğit

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In my case "list" is stored locally. I want to update Firestore UI RecyclerAdapter without re-creating fragment. – Fortray Apr 18 '22 at 12:51
Ben de fragment içinde rcyclerView kullanarak yapıyorum. fragment yeniden oluşturmadan güncelleniyor – Ömer Seyfettin Yavuzyiğit Apr 18 '22 at 13:11
This is how i do it and i can view my list even without internet.even I'm making a query, sorting by date or because the question was answered, not answered and all.ı don't have any comments for you unfortunately.For support can you click the up arrow – Ömer Seyfettin Yavuzyiğit Apr 18 '22 at 13:14
I am also doing it using cyclerView inside fragment. updating fragment without rebuilding. – Ömer Seyfettin Yavuzyiğit Apr 18 '22 at 13:23

How to update Firestore RecyclerView Adapter based upon field value changes locally or in database?

1 Answers1