see my post at
http://bend-ing.blogspot.com/2008/11/properly-handle-progress-dialog-in.html
On Nov 7, 9:30 am, David Given <[EMAIL PROTECTED]> wrote:
> Bobbie wrote:
> > Hey all, thanks for all your help so far! I have the following
> > function running on a timer every 20 seconds or so. However, every
> > time it runs, my user interface for this program (an EditText box and
> > a submit Button) freezes until the HttpPost is finished. Is there a
> > way for me to run this function "in the background" or something so it
> > doesn't freeze the interface? Is there a more efficient way to do
> > what I'm trying to do here? The "chatscreen" variable is a TextView.
>
> Yes, run it in another thread --- look up java.lang.Thread. Be aware
> that methods in another thread can't call anything in the UI directly,
> though; look up Handler.
>
> void doSomethingInBackground()
> {
> /* Here we're in the UI thread. */
> final Handler handler = new Handler();
> Thread thread = new Thread()
> {
> public void run()
> {
> /* Here we're in the background thread. */
> /* perform blocking operation here */
> handler.post(
> new Runnable()
> {
> public void run()
> {
> /* Back in the UI thread again. Tell the user we're
> * finished. */
> }
> }
> );
> }
> };
>
> /* Start background thread, don't wait (will return immediately). */
> thread.start();
>
> }
>
> If you think the syntax is nasty, you're not the only one. Bear in mind
> that your activity may have finished by the time the thread completes.
> Also, if you're going to do this a lot, you'll want to reuse the Handler
> and Thread objects.
>
> --
> David Given
> [EMAIL PROTECTED]
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