Why Doesn't My FirebaseListAdapter Push Individual Chat Messages After Updating to Firebase-UI 3.1?

FirebaseListAdapter Not Pushing Individual Items for Chat App - Firebase-UI 3.1

In developing a chat application, issues can arise when attempting to display messages retrieved from a Firebase database in a custom ListView. This can occur when updating dependencies, particularly the firebase-ui library version to 3.1.0. The following addresses the cause and provides a solution to this challenge.

Problem

After updating to Firebase-UI 3.1.0, the code used to construct the FirebaseListAdapter no longer operates as intended. The previous approach, which relied on direct instantiation of the adapter, has become deprecated.

Solution

To resolve this issue, the code must be adapted to conform to the new requirements of Firebase-UI. This involves creating a FirebaseListOptions object and passing it as a parameter to the FirebaseListAdapter constructor.

FirebaseListOptions<ChatMessage> options = new FirebaseListOptions.Builder<ChatMessage>()
            .setQuery(FirebaseDatabase.getInstance().getReference("Lobbies").child(leaderID).child("Messages"), ChatMessage.class).setLayout(R.layout.message).build();

    adapter = new FirebaseListAdapter<ChatMessage>(options) {
        @Override
        protected void populateView(View v, ChatMessage model, int position) {
            // Get references to the views of message.xml
            TextView messageText = v.findViewById(R.id.message_text);
            TextView messageUser = v.findViewById(R.id.message_user);
            TextView messageTime = v.findViewById(R.id.message_time);

            // Set their text
            messageText.setText(model.getMessageText());
            messageUser.setText(model.getMessageUser());

            // Format the date before showing it
            messageTime.setText(DateFormat.format("dd-MM-yyyy (HH:mm:ss)",
                    model.getMessageTime()));
        }
    };

Listener Lifecycle Management

To display data in the listview, the FirebaseListAdapter uses a listener to monitor changes in the Firebase database. This listener must be started and stopped within the activity's lifecycle:

@Override
protected void onStart() {
    super.onStart();
    adapter.startListening();
}


@Override
protected void onStop() {
    super.onStop();
    adapter.stopListening();
}

By implementing these steps, the FirebaseListAdapter will successfully display the individual messages in the chat application's ListView.

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