Java Development

[Siyaa]

I am trying to populate a table on the screen as and when the user clicks a Labelfield (20 rows are populated per click).

When the user clicks the labelfield, following takes place:

1). A chunk of data is read from the SQLite database in a background thread.

2). The data is then populated within the existing table on the screen (by adding more fields to the Table Layout Manager) in the invokeLater() method.

I am currently facing a problem of 'Application not responding; process terminated' when i keep loading more items for say about 3 to 4 times (i.e. after around 60-80 rows are populated).

I am afraid this could be caused due to the UI thread getting held up for a long time while the population is taking place. Is there a different way to update the UI, so that the app runs smoothly?

I would appreciate any help as I have been held up with this problem for some time now.

[babakar]

I dont know if I get you right, I did a similar thing with page flipping a list of data. Because a large chunk of rows will end up with out of memory error

[muhachev · Accepted solution]

You should use another thread for querying database and then creating and populating fields. After creating fields use method Manager.addAll() to add an array of fields (in invokeLater() body of course).

[simon_hain]

welcome to the support forums.

muhachev tip is good, using addAll reduces load, and only that has to be put inside invokelater, field creation can be done on the thread.

if you have so many lines you could also check out listfield, it has a very high performance for bigger amounts of data.

[Siyaa]

Thank you so much. That worked. It was of great help.