adapter

(Not specific to ListView, but to Adapter). I keep implementing this when I subclass BaseAdapter: @Override public long getItemId(int position) { return position; } Because have to implement that. I don't see any use of it, I need getItem(position) only, not getItemId(position). I wonder if it has any significance (to Android SDK or something else)? There are probably many reasons to have stable item IDs. A default implementation cannot be given since it depends on the type of Object being stored in the Adapter. Android has a check to make sure that item IDs are used only when they are stabled

I have a database in a server and from a Tablet I take some values from one table in the database. I load this information correctly into a list but I would like to know why when there is a change, nothing happens even if I use notifyDataSetChanged(); . I must say that for loading the loading data y use the AsyncTaskClass So, my problem is that I don't know if use the notifyDataSetChanged(); method correctly ,because if there's is a change I would like to refresh the image. Here is some part of the code of the class: @Override public void onCreate(Bundle savedInstanceState) { super.onCreate

I have a ListActivity with my customized adapter. and inside each of the view, it may have some buttons, in which i need to implement OnClickListener. I need to implement the OnClickListener in the adapter. However, I dont know how to call the function like startActivity() or setResult(). since the adapter doesnt extend to Activity. so what is the best way to solve this problem ? thanks Just pass in the current Context to the Adapter constructor and store it as a field. Then inside the onClick you can use that context to call startActivity(). pseudo-code public class MyAdapter extends Adapter

I am attempting to create a custom Adapter for my ListView since each item in the list can have a different view (a link, toggle, or radio group), but when I try to run the Activity that uses the ListView I receive an error and the app stops. The application is targeted for the Android 1.6 platform. The code: public class MenuListAdapter extends BaseAdapter { private static final String LOG_KEY = MenuListAdapter.class.getSimpleName(); protected List<MenuItem> list; protected Context ctx; protected LayoutInflater inflater; public MenuListAdapter(Context context, List<MenuItem> objects) { this