Question

I have a list of items that I get from the database and display to an Android screen.

I add the items like this:

JSONArray obj = new JSONArray(result);

if ( obj != null )
                    {
                        problems.clear();
                        List<String> list = new ArrayList<String>();

                        for ( int i = 0; i < obj.length(); i++ )
                        {
                            JSONObject o = obj.getJSONObject(i);

                            Log.d( "Title: " , "" + o.getString("problem_title") );       
                            Log.d( "id: " , "" + o.getString("problem_id") );                               

                            problem_title = o.getString("problem_title");
                            problem_id = o.getString("problem_id");

                            problems.add( problem_id );

//                          Log.d( "MyProblemsActivity" , "problem title: " + problem_title );        
                            Log.d( "MyProblemsActivity" , "problem id: " + problem_id );

                        }

                        problems.addAll(list);
                        adapter.notifyDataSetChanged();                     
                    }   

Ideally I would display the title string to the user, and keep the id of the item tracked, but hidden from the user. Is there a way to do that?

So far I only figured out how to display the id so that when the person clicks the id, I can get that value like this:

ListView lv = getListView();
lv.setTextFilterEnabled(true);

lv.setOnItemClickListener(new OnItemClickListener() 
{
    public void onItemClick(AdapterView<?> parent, View view,
        int position, long id) 
    {
      // When clicked, show a toast with the TextView text
      Toast.makeText(getApplicationContext(), (( TextView ) view).getText(),
          Toast.LENGTH_SHORT).show();

      // For now just do something simple like display a responsive message
      Log.d( "MyProblemsActivity" , "A choice was made from the list: " + (( TextView ) view).getText() );
    }
  });     

But is there a way to display the item string, but still be able to know what the id was when the item was clicked?

Thanks!

Answer 1

Sure. You could modify your Adapter / List to take some custom Object and

static class Item {
    public String title;
    public String id;
}

List<Item> list = new ArrayList<Item>();

YourAdapter extends ArrayAdapter<Item> {

// inside your OnItemClickListener
adapter.getItem(position)

Edit:
http://www.vogella.de/articles/AndroidListView/article.html has a nice example.