hello, EGHDK!

how can I help you today?

Hey Mark! So, I have an interesting problem. I have a listView and at the bottom I have an editText and a button. I am making a chat client.

When I press send, the message sends, and shows up on my other phone, but it doesn't show up on the phone that I originally sent it from, until I "hide the keyboard" or if I leave the convo, and I come back.

Any quick thoughts on why it might not be updating the listview right away?

what are you doing to update the ListView?

Well, in my on resume I'm doing adapter.notifyDatasetChanged

what is the base class for your ListAdapter? ArrayAdapter? BaseAdapter? something else?

ArrayAdapter

how are you adding new entries to the ArrayAdapter? are you calling add() or insert() on the ArrayAdapter? or are you calling methods on the ArrayList?

Im not sure?

well, your ArrayAdapter does not get updated by out of work Keebler elves :-)

Sorry. I'm trying to look through my code, but I don't see myself calling add or insert anywhere in my adapter.

when the user clicks Send, you must be doing something with the entered text, besides whatever networking stuff you are doing to send it to the other phone

unless you are not showing your own chat messages until you receive them from a chat room

I'm adding it to the array of messages.

so, you are adding it to the ArrayList?

I'm using an ArrayAdapter of a type of object I created called Messages

Yeah, I'm just adding to it.

ideally, get rid of notifyDataSetChanged(), and to call add() or insert() on the ArrayAdapter, rather than calling one of those on the ArrayList

calling add(), insert(), or remove() on the ArrayAdapter both updates the ArrayList *and* does a notifyDataSetChanged() for you

How convenient. Thanks!

and, since it does notifyDataSetChanged() right away, your ListView will update right away

waiting until onResume() to fire notifyDataSetChanged() yourself is probably the source of your delay

I'm sure that will solve it. Time to go eat! Stay warm if you are getting hit by snow by you! Hahaha. Thanks again!

snow's passed, already did my shoveling