Firebaseui-android: How to get key for item in FirebaseRecyclerAdapter ?

[stanbar]

Hello.
I want to be able to delete item on LongClick on View, but I need this item's key to do this. It there any way to get key for item in FirebaseRecyclerAdapter ?

[samtstern]

I think what you're looking for is getRef(i).getKey() which is an instance method of FirebaseRecyclerAdapter. The i argument is the position, which you should have from populateViewHolder().

[binaryKarmic]

What is the alternative for FirestoreRecyclerAdapter ? There is no getRef() method available.

[samtstern]

@binaryKarmic use getSnapshots().get(index) and then you can access the reference from there.

[binaryKarmic]

It will not help actually because it will give me the reference of my data model class.
onBindViewHolder(@NonNull final LiveChatViewHolder holder, int position, final @NonNull ModelClass object)
If i try to use getSnapshots().get(index) here then it will give me ModelClass whereas I need something like getRef(index) so that i can access the key of the node.

[binaryKarmic]

solved the issue by using the SnapshotParser

FirestoreRecyclerOptions< ModelClass > options =  new FirestoreRecyclerOptions.Builder< ModelClass >().setQuery(query, new SnapshotParser< ModelClass >() {
            @NonNull
            @Override
            public ModelClass parseSnapshot(@NonNull DocumentSnapshot snapshot) {
                ModelClass modelClass = snapshot.toObject(ModelClass.class);
               // so i wanted to add the key of the node as a field in the node object.
                modelClass.setId(snapshot.getId());
                return modelClass;
            }
        }).build();

[samtstern]

@binaryKarmic that's a good solution!

[SUPERCILEX]

Nice! FYI, you can also use this: getSnapshots().getSnapshot(index)

[samtstern]

Oops yeah that's what I meant to type :sigh:

[johnx32]

solved the issue by using the SnapshotParser

FirestoreRecyclerOptions< ModelClass > options =  new FirestoreRecyclerOptions.Builder< ModelClass >().setQuery(query, new SnapshotParser< ModelClass >() {
            @NonNull
            @Override
            public ModelClass parseSnapshot(@NonNull DocumentSnapshot snapshot) {
                ModelClass modelClass = snapshot.toObject(ModelClass.class);
               // so i wanted to add the key of the node as a field in the node object.
                modelClass.setId(snapshot.getId());
                return modelClass;
            }
        }).build();

the best solution