Advice required - what UI component to a data browser application
I am building a data browser application and to display a row of data for each item in the database in one window scrolling. I wonder advice on what user interface component to use. OS 5.0 or later only.
The app will have at least 500 lines of data - maybe more up to a mile or two. So I'm afraid that if I load all the data in a ListField or ObjectListField I'll use scads of memory to display the data - which most scrolls off the screen.
I could page the next page of data instead of scrolling dynamically, but that degrades the user experience. I could build a data reader multi-threaded which fills a video page before and reduced the amount of data contained in the list at any time - but hope that there is a better way.
Advice appreciated...
This isn't an answer to the question that is asked but, you mentioned the quality of the experience 'user' as a factor, so here it goes...
Unless it is a scientific application, I submit respectfully that the average user does not scroll on lines of 500-1000 of data, regardless of the nature of the UI container.
How about a query/filter front page, for example as the OS5 built in search of e-mail, perhaps associated with a sort function... to cut the results to a reasonable number, then present in a list field... who can easily manipulate for example, 100 records.
Anyway, just my $0.02
Tags: BlackBerry Developers
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