how to get data into LiveData<List<Model>> from DataSnapshot

Question

I am attempting to load data from a Firebase DataSnapshot, but I don't receive any data when trying this:

override fun onActive() {
    super.onActive()

    FirebaseDatabase.getInstance()
        .getReference("/users")
        .addListenerForSingleValueEvent(object : ValueEventListener {

            override fun onCancelled(databaseError: DatabaseError) {
                Log.d("UserRepository","databaseError ${databaseError.message}")
            }

            override fun onDataChange(dataSnapshot: DataSnapshot) {
                if (dataSnapshot.exists()) {
                    value = dataSnapshot.children
                }
            }

        })
}

But with the code above I do not receive any data in dataSnapshot

Answer 1

DataSnapshot has getChildren() which contains data snapshot instances, all you need to do is using a for loop in order to be able to access all DataSnapshot instances to get YourModelClass class by using getValue().then add them into the model list

for(DataSnapshot ds : dataSnapshot.getChildren()) {

    YourModelClass modelObject = ds.getValue(YourModelClass.class);
    Log.d("TAG", modelObject.getMsg());
    modelList.add(modelObject)
}