I am having trouble with a ListView I created: I want an item to get selected when I click on it.

My code for this looks like:

protected void onResume() {
...
ListView lv = getListView(); 
lv.setOnItemSelectedListener(new OnItemSelectedListener() 
{
    public void onItemSelected(AdapterView<?> adapterView, View view, int pos, long id) {
        Log.v(TAG, "onItemSelected(..., " + pos + ",...) => selected: " + getSelectedItemPosition());
    }
    public void onNothingSelected(AdapterView<?> adapterView) {
        Log.v(TAG, "onNothingSelected(...) => selected: " + getSelectedItemPosition());
    }
});
lv.setOnItemClickListener(new OnItemClickListener()
{
    public void onItemClick(AdapterView<?> adapterView, View view, int pos, long id) {
        lv.setSelection(pos);               
        Log.v(TAG, "onItemClick(..., " + pos + ",...) => selected: " + getSelectedItemPosition());              
    }
});
...
}

When I run this and click e.g. on the second item (i.e. pos=1) I get:

04-03 23:08:36.994: V/DisplayLists(663): onItemClick(..., 1,...) => selected: -1

i.e. even though the OnItemClickListener is called with the proper argument and calls a setSelection(1), there is no item selected (and hence also OnItemSelectedListener.onItemSelected(...) is never called) and getSelectedItemPosition() still yields -1 after the setSelection(1)-call.

What am I missing?

Michael

PS.: My list does have >=2 elements...

• android
• android-widget
• android-listview

The missing element here is choiceMode. This isn't terribly well documented, but ListViews (and by extension, anything that inherits from AbsListView, like GridView, etc.) in android by default do not allow for selection, but it can be enabled - either in XML or in code:

in XML:

<ListView
  ...
  android:choiceMode="singleChoice" />

Code:

mListView.setChoiceMode(AbsListView.CHOICE_MODE_SINGLE);

Note that once you do this, android will setSelection() for you, so you don't need to keep track of it yourself. At that point your onClickListener is just for saving the selection and I don't even bother with the OnSelectedItemListener :

@Override
public void onItemClick(final AdapterView<?> list, final View v,
    final int position, final long id) {
  Participant p = mAdapter.getParticipantForId(id);
  eventManager.fire(new ParticipantSelectedEvent(p));
  pxList.smoothScrollToPosition(position); // Make sure selection is plainly visible
}

Try this:--

    ListView lv = getListView();

    lv.setOnItemClickListener(new OnItemClickListener() {
      public void onItemClick(AdapterView<?> parent, View view,
          int position, long id) {

          // selected item
          String product = ((TextView) view).getText().toString();

         Toast.makeText(getApplicationContext(), "Selected Item :" +product, Toast.LENGTH_SHORT).show();

      }
    });

Hope it will help you.

I just realized, that I was completely off. In touch-mode, it doesn't make sense at all, to select an item. You just directly operate on it, when clicked (and the OnClickListener is called). I am just starting to appreciate, that Android takes care of all these different devices, that have direction control buttons, touch screens, etc. It's just not always easy to imagine, how an operation is done on a device that one isn't used to or can't test on.