The first thing I would suggest is to not touch anything related to the view hierarchy from another thread. It is really hard to know what all your thread is doing and what problems it might be having, so I would first want to see that potential issue eliminated from the equation. Instead, have it sends whatever messages (or post runnables) to the main thread to modify the view hierarchy / adapter state.
There is also an ApiDemo of updating the contents of an adapter in a list view as data is available; you can look at that to see if you are doing it a similar way. On Fri, Jun 26, 2009 at 2:17 PM, Peter <[email protected]> wrote: > > See my comments inline that should give you a better description and > slightly more information. Thank you. > > On Jun 26, 4:43 pm, Mark Murphy <[email protected]> wrote: > > Peter wrote: > > > I've tried to describe this problem a few times, but I'll try again. > > > > I saw your earlier posts. I could not make heads or tails of them then, > > and I'm not having much better luck here. > > Sorry. I'm making the mistake of hoping people identify the problem > based on not very much information, partially because I'm lazy, I > guess. > > > > > > However, when 0 is updated, 5 mirrors its data on the screen > > > briefly > > > > What, exactly, is "its" in the phrase "5 mirrors its data"? > > Row 0 in the ListView contains an ImageView. Initially, all rows have > a placeholder image. The thread updates row 0's ImageView, and I see > the image updated on the screen. A split-second later, row 5's image > is the same as row 0. So now, 0 has the new image, 1-4 still have the > placeholder, and 5 shows the image associated with row 0. Then row 1's > image is updated, and row 4 shows the same image. Then row 2 is > updated with its image, (*screenshot linked below occurs here*) but 3 > is next to load so it doesn't mirror row 2. So row 3 loads correctly, > then row 4 reloads with the right image, then row 5 reloads. > > Here is a link to a screenshot (with some client-specific info > cropped) that shows the ListView and the images in question at the > state described: > http://picasaweb.google.com/lh/photo/QMVbTulUnXWwwXdhCBPEUw?feat=directlink > > > > > Basically, I cannot parse your sentence, and so I have no idea what > > behavior you are seeing. > > > > > How many views are created by default for an adapter? > > > > From the standpoint of the adapter, 0, since adapters do not create rows > > unless asked. > > > > From the standpoint of the ListView (and you never indicated in your > > email exactly what selection widget you're using; I'm just guessing), it > > will create as many rows as is needed. That would be the lesser of the > > number of rows in the data (as reported by the adapter) and the number > > of rows that could be visible (as determined by the selection widget > > type and, in the case of ListView, its size). > > > > > My guess is 3 based on what I see. > > > > If you are trying to say that you have a ListView that shows six rows, > > then the answer should be six. You can verify this by using > > hierarchyviewer to inspect your layout: > > > > http://developer.android.com/guide/developing/tools/hierarchy-viewer.... > > I will try out this tool. > > > > > -- > > Mark Murphy (a Commons Guy)http://commonsware.com| > http://twitter.com/commonsguy > > > > _Android Programming Tutorials_ Version 1.0 Available! > > > -- 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. --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
