The fade will be gone in the next release. Also the real problem with that is that it is doing the fade-out at all when you have selected the item, instead of just leaving it highlighted while doing the transition.
On Thu, Apr 19, 2012 at 11:25 PM, Jon Perlow <per...@gmail.com> wrote: > I'm trying to improve the transition of an Activity containing a ListView > that navigates to another Activity containing a ListView when the user > selects an item. > > In ICS, the holo theme has a list selector that has a very nice fade-out > transition. Maybe I am just doing something stupid, but AFAICT, the problem > with this is that only a toy app could really make that transition work > under Android's UI architecture. In order for the animation to be smooth, > let's assume it needs a 25 fps draw rate. Drawing in android requires the > UI thread. that means you can't block the UI thread for more than 40ms for > that animation to render smoothly. In the scenario where clicking on a list > item navigates to another activity, it requires that the other activity > finish its onCreate, onStart, onResume, the measuring and layout of all its > views in less than 40ms. > > Is this really possible for any real application? I noticed that most of > the apps that come with Android are not using this transition. AFAICT, the > Gmail app doesn't use it nor does the SMS app or the contacts app. There > are a few apps that do use it like the preferences and the transitions are > extremely choppy. > > -Jon > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to android-developers@googlegroups.com > To unsubscribe from this group, send email to > android-developers+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en -- Dianne Hackborn Android framework engineer hack...@android.com Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
