Hi Mark, thanx for your amazing fast reply. All your remarks are very valid, but i might have oversimplified my code:
- SplashScreen remark: i'm actually doin this with a timertask and a handler, is tested and working; - Feed is indeed retrieved in a seperate thread (as are the images for each message); - Valid feed messages are returned (adding these to a tableview for example is working); - i checked my List object though and messages.size() gives me 10..... Your last remark is interesting though, how can i use the hierarchy viewer? Because when i use lv.getVisibility() it gives me 0 (what as far as i know means it's visible....) Any more thoughts? Patrick 2009/12/14 Mark Murphy <[email protected]> > Patrick Plaatje wrote: > > Hi All, > > > > Struggling and struggling, but can't find the thing i'm doin wrong in my > > listview implementation. No exceptions, just no listview. I have a > > customized adapter with an overridden getView method, but the Log.d > > won't show, so i guess my adapter is just wrong? Could somebody have a > > look at the code below? Thanks in advance! > > <snip> > > > public class ArticleList extends ListActivity { > > > > /** Called when the activity is first created. */ > > public void onCreate(Bundle savedInstanceState) { > > // call super constructor > > super.onCreate(savedInstanceState); > > > > // set the layout used for this activity > > setContentView(R.layout.article_list); > > > > // create a new splashscreen and show it: > > SplashScreen ss = new SplashScreen(this); > > ss.show(); > > > > // now that we have the splash screen displayed fire up the > > // method that's going to fetch our content > > ArticleListView alv = new ArticleListView(this); > > alv.setSource("rss"); > > alv.show(); > > ss.hide(); > > } > > Your splash screen will never be shown, since you hide it before it is > displayed. Remember that nothing you do in onCreate(), or any callback, > will affect the screen until *after* the callback returns. > > If you are eventually going to do a real implementation of this, with > HTTP retrieval of a feed, you are going to need to rework this code to > take threading into account. You will not be successful retrieving a > feed on the main application thread, as you will take too long and get > the fabled "application not responding" (ANR) force-close dialog. You > will need to do the retrieval in a background operation, perhaps using > an AsyncTask. > > > public class ArticleListView { > > > > private String source=null; > > private ListView lv; > > > > public ArticleListView(ListActivity act) { > > > > // find the list view > > lv = (ListView) act.findViewById(android.R.id.list); > > > > // get the messages > > FeedManager fm = new FeedManager(); > > Feed f = fm.getFeed("Some valid feed url"); > > List<FeedMessage> messages = f.getMessages(); > > > > // get the adapter for the list > > ArticleDetailAdapter adp = new ArticleDetailAdapter(act, > > android.R.layout.simple_list_item_2, messages); > > > > lv.setAdapter(adp); > > > > } > > > > public void show(){ > > lv.setVisibility(View.VISIBLE); > > } > > > > public void hide(){ > > lv.setVisibility(View.GONE); > > } > > > > public void setSource(String source){ > > this.source = source; > > } > > > > public String getSource(){ > > return source; > > } > > > > } > > You could use hierarchyviewer to see if your ListView is actually > becoming visible. You could also check to see that f.getMessages() will > return a non-empty list -- if the list is empty, getView() will not be > called for any rows. > > -- > Mark Murphy (a Commons Guy) > http://commonsware.com | http://twitter.com/commonsguy > > Android Training in Germany, 18-22 January 2010: http://bignerdranch.com > > -- > 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%[email protected]> > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en -- Met vriendelijke groet, Patrick Plaatje NDC|VBK de uitgevers Sixmastraat 32, 8915 PA Leeuwarden Postbus 394, 8901 BD Leeuwarden T (058) - 284 5044 M (06) - 158 966 34 -- 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
