FirebaseListAdapter alphabetical order

Question

In my Android app, I have a ListView with a FirebaseListAdapter that shows me my users, now I want the firebaseListAdapter to be sort in alphabetical order. How can I achieve this?

Code:

mListView = (ListView) findViewById(R.id.listView);

DatabaseReference databaseReference = FirebaseDatabase.getInstance().getReference().child("Users");

FirebaseListAdapter<String> firebaseListAdapter = new FirebaseListAdapter<String>(
                        this,
                        String.class,
                        android.R.layout.simple_list_item_1,
                        databaseReference
                ){
                    @Override
                    protected void populateView(View v, String model, int position) {

                        TextView textView = (TextView) v.findViewById(android.R.id.text1);
                        textView.setText(model);

                    }
                };

mListView.setAdapter(firebaseListAdapter);

Answer 1

That depends on what the name is. If you store the users under their name (so that the name is the key):

FirebaseListAdapter<String> firebaseListAdapter = new FirebaseListAdapter<String>(
    this,
    String.class,
    android.R.layout.simple_list_item_1,
    databaseReference.orderByKey()
){

But if for example you have the name as a property called "name", you'd use:

FirebaseListAdapter<String> firebaseListAdapter = new FirebaseListAdapter<String>(
    this,
    String.class,
    android.R.layout.simple_list_item_1,
    databaseReference.orderByChild("name")
){

Finally: if you want to order by the single string value of the keys:

FirebaseListAdapter<String> firebaseListAdapter = new FirebaseListAdapter<String>(
    this,
    String.class,
    android.R.layout.simple_list_item_1,
    databaseReference.orderByValue()
){