ParseLiveQuery 更新列表

Question

您好，我正在尝试实时更新列表以创建聊天应用程序。目前我正在尝试用这种方法查询...

private void changeChatLive(String chat) {
    listaDeMensajes.clear();
    ParseQuery<ParseObject> parseQuery = new ParseQuery("Conversaciones");
    // This query can even be more granular (i.e. only refresh if the entry was added by some other user)
    // parseQuery.whereNotEqualTo(USER_ID_KEY, ParseUser.getCurrentUser().getObjectId());
    //ParseObject chatId = ParseObject.createWithoutData("Chat", chat);
     parseQuery.whereEqualTo("ChatId", chatId);
    // Connect to Parse server
    parseQuery.include("ChatId");
    SubscriptionHandling<ParseObject> subscriptionHandling = parseLiveQueryClient.subscribe(parseQuery);

    // Listen for CREATE events
    subscriptionHandling.handleEvent(SubscriptionHandling.Event.CREATE, new
            SubscriptionHandling.HandleEventCallback<ParseObject>() {
                @Override
                public void onEvent(ParseQuery<ParseObject> query, ParseObject object) {

                    Handler handler = new Handler(Looper.getMainLooper());
                    handler.post(new Runnable() {
                        @Override
                        public void run() {
                            mMessageAdapter.notifyDataSetChanged();
                            mMessageRecycler.scrollToPosition(0);
                            scroll.fullScroll(FOCUS_DOWN);
                        }
                    });
                }
            });
}

我需要的是更新 List<ParseObject> listaDeMensajes，就像 findInBackground 方法将拥有 List 一样。

Answer 1

这个问题的答案正如 Davi Macedo 所说。我所做的是根据需要自定义查询。然后在运行方法中更新列表！.

listaDeMensajes.add(object);
mMessageAdapter.notifyDataSetChanged();
mMessageRecycler.scrollToPosition(0);

ParseLiveQuery 更新列表

ParseLiveQuery updating a list

android

parse-platform

parse-android-sdk