Bob - Thanks for the answer. That worked. I had assumed that if the methods required a textViewResourceId, they required a valid one.
Regards, Keith On May 4, 8:45 am, Bob Kerns <[email protected]> wrote: > Hi, Keith! > > At the start of the description for the ArrayAdapter class is the following > sentence: > > To use something other than TextViews for the array display, for instance, > ImageViews, or to have some of data besides toString() results fill the > views, override getView(int, View, > ViewGroup)<http://developer.android.com/reference/android/widget/ArrayAdapter.ht..., > android.view.View, android.view.ViewGroup)> to return the type of view you > want. > > The default implementation of this method is what uses the resourceID's to > construct the appropriate views for the individual data items. If you're > doing it all in code (rather than via XML), then this is where your code to > create these views will need to go. > > The only places this information is used are in this class's implementation > of getView(int, View, ViewGroup), and getDropDownView(int, View, ViewGroup). > (And they both call the same internal private method to do the work). > > So, if you will be using a similar technique to create your item views in > these two cases, you can put your code to create the per-item views in your > own private method, and make getView(...) and getDropDownView(...) call that > private method. If these two cases are significantly different, just > implement both methods. > > Either way, the resulting class will not be using the resource IDs, so you > can just supply 0 to the ArrayAdapter constructor in your derived class's > constructor. > > > > > > > > On Tuesday, May 3, 2011 2:45:36 AM UTC-7, Keith Bennett wrote: > > > Hi, all. I'm a longtime developer but new to Android. I want to > > learn how to instantiate visual components in code rather than XML, so > > that I better understand the API, and can build UI's dynamically. > > > I want to do this with a ListView. I understand that the ListView's > > underlying data is provided by an implementation of ListAdapter. > > However, when I research the implementations of ListAdapter, I don't > > see anything that seems to be helpful. ArrayAdapter seems to be the > > closest to what I want, but all its constructors require a > > textViewResourceId, defined as "the resource ID for a layout file > > containing a TextView to use when instantiating views". But I'm > > building everything in code, even the top level View passed to > > setContentView(). > > > I was under the impression that anything created with xml > > configuration files could also be created using the API. How can I do > > this? > > > Also, do I need to define id's for the objects provided by the > > adapter, or is this not necessary because I can refer to them as Java > > objects in my code? > > > Thanks for any help. > > > - Keith -- 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
