如何获取最新的更新的解析对象在Android？

Question

I don't know about parse and I want to learn it.I want to know how can I get the latest updated parse object in parse.I tried to use get first in background but I think there is a problem in my ParseQuery.Please provide me the right way of query to get the latest object I just pushed on the parse cloud back.

   ParseQuery<ParseObject> query=ParseQuery.getQuery("RBSE");
       query.whereEqualTo("roomA","900");

    query.getFirstInBackground(new GetCallback<ParseObject>() {

    @Override
        public void done(ParseObject objectLatest, ParseException e) {
        if(e==null){

        }
        else{


        }

        }
   }

Answer 1

To get the most recently created/modified, simply sort descending by the "updatedAt" field (it is built-in).

ParseQuery<ParseObject> query = ParseQuery.getQuery("RBSE");
query.orderByDescending("updatedAt");
query.getFirstInBackground(new GetCallback<ParseObject>() {
  public void done(ParseObject object, ParseException e) {
    if (object == null) {
      Log.d("RBSE", "The getFirst request failed.");
    } else {
      // got the most recently modified object... do something with it here
    }
  }
});