Thanks again, Romain. It is gear to separate one layout into pieces!
Why didn't I think of it?!! Nick On Jun 12, 7:10 am, "Romain Guy" <[EMAIL PROTECTED]> wrote: > You can (and should) use ViewInflate but you could separate your XML > into several pieces. Another solution that I've used successfully for > the Home screen is to write your own layout so as to reduce the number > of Views. > > Note that the next SDK will provide several new XML tags to help > reduce the number of views in a layout. > > > > On Wed, Jun 11, 2008 at 4:50 PM, Nickname <[EMAIL PROTECTED]> wrote: > > > Thanks, Romain. > > > Your suggestion is valid, because only 5 or so of the 20 views will be > > on the row at a time and the others will be hidden. > > > Maybe I should not use ViewInflate.inflate() at all but add those view > > that need to be on the row programmatically. > > > Nick. > > > On Jun 11, 2:44 pm, "Romain Guy" <[EMAIL PROTECTED]> wrote: > >> Hi, > > >> XML inflation is slow but on real hardware it is not as slow as you > >> describe. However, remember you are developing for a cell phone. Even > >> if inflating your views was fast, having so many views on screen > >> (you're talking about 20 views per row in a LinearLayout) will impact > >> layout, drawing, scrolling and memory performance. You should > >> seriously consider simplifying this XML file and limit the number of > >> views you need on screen. > > >> On Wed, Jun 11, 2008 at 3:37 PM, Nickname <[EMAIL PROTECTED]> wrote: > > >> > Thanks, Mark. > > >> > I do reuse the "convertView parameter" when it is not null. > > >> > The parameter is null at the first time when a listview displays, and > >> > it takes long long long time to finish. > > >> > Nick. > > >> > On Jun 11, 2:14 pm, Mark Murphy <[EMAIL PROTECTED]> wrote: > >> >> Nickname wrote: > >> >> > Hi, > > >> >> > As title, ViewInflate.inflate() takes about 500ms-1sec to inflat an > >> >> > XML layout file defining a LinearLayout objects containing two > >> >> > LinearLayout objects each with about 10 Views objects. > > >> >> > With a ListView of 20 entries, each of the same layout, it will take > >> >> > 10-20 seconds to finish layout the entire ListView. > > >> >> > Is there any faster way to achieve it? For example, faster inflate API > >> >> > or some API to "clone" the first inflated entry to obtain remaining 19 > >> >> > entries? > > >> >> When you say 20 entries, do you mean you anticipate 20 lines being > >> >> visible at one time? Or do you mean the list will have 20 total entries, > >> >> of which some subset will be visible at once? > > >> >> If the latter, you may be able to take advantage of the passed-in View > >> >> convertView parameter to your list adapter's getView() implementation. > >> >> If non-null, this represents a View you already inflated, but whose > >> >> contents need to change to represent the supplied item position. Just > >> >> cast it to the proper View class and update the innards as needed. This > >> >> will cut the inflations down to only as many lines as are visible. > > >> >> -- > >> >> Mark Murphy (a Commons Guy)http://commonsware.com > >> >> Warescription: All titles, revisions, & ebook formats, just $35/year > > >> -- > >> Romain Guywww.curious-creature.org > > -- > Romain Guywww.curious-creature.org --~--~---------~--~----~------------~-------~--~----~ 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] Announcing the new M5 SDK! http://android-developers.blogspot.com/2008/02/android-sdk-m5-rc14-now-available.html For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
