How do I profile the code? I do recycle bitmaps since each list item displays its own bitmap image and without recycling I quickly run out of memory.
On Aug 26, 10:50 pm, Dianne Hackborn <[email protected]> wrote: > Run your code in a profiler. > > Make sure you aren't thrashing through temporary objects. If the GC is > running much while scrolling, optimize to reduce temp objects. > > > > > > On Thu, Aug 26, 2010 at 6:18 PM, ls02 <[email protected]> wrote: > > I have list view with fairly complex list view items consisting of > > several image views, several text views, progress bars, etc. Depending > > on the state of the item some of these elements can be show and some > > are hidden. I understand that listview recycles views. Right now I am > > dealing with slow listview scrolling especially on lower powered > > devices. What's the best way to deal with this problem? > > > I already optimized each list item view as much as I could. Now I am > > facing with what's the best? Use one single view with many children > > for all items and hide and show various children depending on the item > > state. This way I do not inflate each item view as list is being > > scrolled but need to show and hide constantly various child views. > > > Another approach is to build item view dynamically each time view is > > requested in the adapter getView method. In this case I can only add > > at run time those elements that are truly needed for current item > > state but this requires inflating item view every time. > > > Finally the third approach is most extreme is to have one custom view > > and draw everything myself. This of cause requires a lot of work. > > > -- > > You received this message because you are subscribed to the Google > > Groups "Android Developers" group. > > To post to this group, send email to [email protected] > > To unsubscribe from this group, send email to > > [email protected]<android-developers%2bunsubs[email protected]> > > For more options, visit this group at > >http://groups.google.com/group/android-developers?hl=en > > -- > Dianne Hackborn > Android framework engineer > [email protected] > > 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.- Hide quoted text - > > - Show quoted text - -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
