retrieve subcollection documents from firebase firestore android

Question

I want to retrieve subcollection documents from firebase firestore android and show it in recycler view but nothing is showing in recycler view I think have a problem in data retrieving

 var myarray=ArrayList<User>()
   rv=findViewById(R.id.idrecycler) as? RecyclerView
    notebookRef.addSnapshotListener { querySnapshot, firebaseFirestoreException ->
           for(uid in querySnapshot!!.documentChanges){
               uid.document.reference.collection("ProfileData")
                   .addSnapshotListener { querySnapshot2, firebaseFirestoreException ->
                   for(da in querySnapshot2!!){
                  val note = da.toObject(Note::class.java)
                       var title = note.title
                  var description = note.notes
                           var note2 = da.toObject(Note2::class.java)
                           var username = note2!!.username
                           myarray.add(User(username!!,str.child(currentuser),title!!,description!!))
                       }
              }
  }}

User.class

data class User(
    var username:String,
    var userphoto: StorageReference,
    var title:String,
    var notes:String
)

uid are UserUID da are id of some notes

Database Snapshot :

Please post the database snapshot to understand your question. — Ashish, Oct 17 '19 at 08:53
The way your trying to retrieve the subcollection documents won't work as you expected. I suggest you to retrieve the documents list then onClick on document send to new activity then retrieve the data of subcollection documents — Ashish, Oct 17 '19 at 08:54
whose data you want to retrieve it depends on it. If you want to retrieve all the user. Then i provide help according the situation. — Ashish, Oct 17 '19 at 09:09
https://stackoverflow.com/a/43295289/10182897 try this answer — Ashish, Oct 17 '19 at 09:23
First you have to retrieve the users list and show it in recyclerview — Ashish, Oct 17 '19 at 12:16
you mean I have to store UserUID in Realtime and show their data from firestore — Bilal Taghda, Oct 17 '19 at 12:47
nope you have to retrieve all the users then onclick of each user. You can retrieve values from Subcollection — Ashish, Oct 17 '19 at 12:49
https://stackoverflow.com/questions/51746587/display-data-from-firebase-firestore-to-recyclerview-with-kotlin rest depend on you sir — Ashish, Oct 17 '19 at 13:00
I can t retrieve useruid > profiledata > data can you help me — Bilal Taghda, Oct 18 '19 at 06:30

retrieve subcollection documents from firebase firestore android

0 Answers0