Hey Shelley,
a bit of further information is missing but may it be that you issue
an RPC between infoLabel.setText("Beginning...."); and
infoLabel.setText("Completed....");?
If so you simply forgot the async nature of GWT RPC. Your code in
onClick(...) will not sort of stop or wait until the RPC finishes and
continue afterwards. That's why infoLabel.setText("Completed....");
will be immediately executed after infoLabel.setText("Beginning....");
and you're simply "way to slow" to see it.
What you could do instead is call infoLabel.setText("Completed....");
in your onSuccess(...) in case I'm right with RPC or in the callback
of whatever request you do for your search operation.
Andreas
On 7 Jul., 10:22, Shelley <[email protected]> wrote:
> hello all:
> i came across a strange problem which seems quite simple:
>
> i have a button and a label on a panel, the button has been
> registered a listener:
>
> Button searchButton = new Button( "Search" );
> searchButton.addClickHandler( new ClickHandler()
> {
> @Override
> public void onClick( ClickEvent event )
> {
> infoLabel.setText("Beginning....");
> //do a search operation here which will take more than
> 5 seconds...
> infoLabel.setText("Completed...");
> }
> } );
>
> that's all, but i never see the "Beginning....“ on the label, but only
> see the "completed...", seem the label will not refresh it's text
> until onClick is finished? how can i achieved the function that
> display "beginning..." first and "Completed..." when the operation
> completed?
>
> thanks in advance.
>
> -Shelley
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