07-10-2012 01:41 PM
how can i implement a list like the one blackberry appworld uses? its a multiline list that has a ticker which scrolls back and forth (horizontally) when the discription text is too long.
thanx in advance!
07-10-2012 07:22 PM
The multi-line list is easy, basically this appears to be a standard ListField, where the height has been defined as large enough to accept multiple lines, then the drawListRow has written each of these out. look for samples of multiple line ListFields in the forum.
The ticker is almost certainly just a separate Thread or TimerTask, that just invalidates the row. This will cause drawListRow to be called again, and the code in drawListRow will maintain a current 'offset' and increment that to paint characters. This will be incremented each time until the code gets to the end, in which case it will restart giving the ticker effect. If you search for ticker I think you will find sample code for a LabelField that does the same thing. ListField code will be very similar.
Hope this helps.
07-15-2012 11:43 PM
thanx for the reply!
yes i did find some code for the ticker labelfield but some methods (onDisplay()) are deprecated. i did manage to write a multiline listfield.
07-18-2012 01:26 PM
sorry for my late replies.
sadly no ,
i still can't get the ticker to work properly. is their some sample code i can look at that works with os 6 devices?