Question

I am creating an Flex AIR app which imports data from a zip file into a sqlite db. I need to show a progress bar / “Please Wait” spinner animation so that the user waits till the operation completes.

I have tried to put a pop-up spinner animation but the problem is that the spinner stops spinning as soon as the database import queries start executing.

I need to run both the spinner code and the import code simultaneously rather than sequentially.

Thanks

Answer 1

The problem you are facing here is because Flex is a single threaded application. When you run large amounts of as processing, the thread does not update the UI, so your spinner stops spinning.

I think you can work around this by creating a Green Thread to handle your processing code if it can be sliced down. You can check here for an as3 implementation of the Green Thread.

I can provide some more info on implementing it if you need.