http://devblog.blackberry.com/2010/09/running-in-the-background-part-4/ Tue, 29 Jan 2013 20:13:46 +0000 hourly 1 http://wordpress.com/ http://devblog.blackberry.com/2010/09/running-in-the-background-part-4/#comment-627 Tue, 07 Sep 2010 21:03:58 +0000 http://devblog.blackberry.com/?p=2122#comment-627 These tips are all good but very generic. We would like to see some “lesson learned” in real life projects. We look forward to seeing some of this in the Developer conference. One tip we would like to provide here: the fact that we are not able to show/hide (set visible/invisible) a filed force us to add and delete fields to and from the screen (to show/hide it), each add/delete will trigger sublayout(). As a result, when we are refreshing UI, layout become the bottleneck. One way we solve this problem is to not doing sublayout() before everything is ready (all the fields are added/deleted), then do a updateLayout(). We use this tip to fix a performance issue right before we submit our app to the Super App Challenge.

]]>