Hi 1) I'm still not sure why you're doing the measuring yourself (as I'd use a layout xml file to declare the list item's View, and then inflate it/set the values in the adapter's getView() call. 2) I'm guessing that since you are using an adapter and the view holder, that there's an issue with how your getView() method is implemented (or perhaps another implementation of an adapter method). That is, as you know the view holder allows object reuse; that doesn't mean to say that the object that you're re-using has the correct values in it. It's only there to avoid the expensive inflation/ construction; after that point you're expected to set the values in that object (for the list item) as per the data in the array/list/ structure that is backing the adapter.
On Sep 7, 3:55 am, "rious.delie" <rious.de...@gmail.com> wrote: > thank you, > > 1) yes, it is anitemon alistview, i populate some numbers of it on > alistview. > 2) i need to set the height of theviewon runtime, because the height > of theviewis the variable of width (height = f(width)), > it is just as simple as the TextView, which can determine how many > lines needed to show the text based on a function of display width, > each font width, and the text to be displayed. > Yes, i have implemented an adapter (an extends of ArrayAdapter) and > have used ViewHolder (static class ViewHolder()), > > my point is, why bitmap1changesorderrandomlywhilebitmap2 stays > where it should be, > > something like this: > > alistview= > > view1 = bitmap1 = "hai i am bitmap1 in view1" > bitmap2 = "hai i am bitmap2 in view1" > > view2 = bitmap1 = "hai i am bitmap1 in view2" > bitmap2 = "hai i am bitmap2 in view2" > > view3 = bitmap1 = "hai i am bitmap1 in view3" > bitmap2 = "hai i am bitmap2 in view3" > > view4 = bitmap1 = "hai i am bitmap1 in view4" > bitmap2 = "hai i am bitmap2 in view4" > > view5 = bitmap1 = "hai i am bitmap1 in view5" > bitmap2 = "hai i am bitmap2 in view5" > > i scroll fastly, then theorderof bitmap1changes: > > view1 = bitmap1 = "hai i am bitmap1 in view4" > bitmap2 = "hai i am bitmap2 in view1" > > view2 = bitmap1 = "hai i am bitmap1 in view5" > bitmap2 = "hai i am bitmap2 in view2" > > view3 = bitmap1 = "hai i am bitmap1 in view2" > bitmap2 = "hai i am bitmap2 in view3" > > view4 = bitmap1 = "hai i am bitmap1 in view1" > bitmap2 = "hai i am bitmap2 in view4" > > view5 = bitmap1 = "hai i am bitmap1 in view3" > bitmap2 = "hai i am bitmap2 in view5" > > moreover, theorderrandomchangesappearwhilei scroll thelistview > fastly, if i gently scroll it slowly the problem is not occured, it > seems that the problem is not on the code, (is it a bug on android > platform?) > > On Sep 6, 2:17 pm, jamesc <jame...@gmail.com> wrote: > > > > > OK. I've had a quick look. > > > 1) I take it that yourView(MyView) is theitemin theListView? > > 2) Why are you doing the measuring (and implementing onDraw())? I > > would have thought that you should be using a layout to declare the > >ListViewitemand then backing that with a BaseAdapter implementation > > (where you should look at using the "viewholder" pattern to allow re- > > use of inflated objects. > > > On Sep 6, 5:15 am, "rious.delie" <rious.de...@gmail.com> wrote: > > > > somebody please... -- 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
