How to add a dynamic view to a ListView item at runtime?

Question

My problem is that I don\'t know whether I should use multiple list view or a custom listview item adapter which can grows dynamically. For example, for a particular user, t

Answer 1

If you have small number of possible variants (on your screenshots I can see 2 different list items) You have two possible variants:

1. Setup count of different types by this method, and provide type for every item - and you can use convertView.

2. Create "full" list item view and set visibility for elements, that you don't want to see in particular item.

Some code for #2:

public class ListTestActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    List list = new ArrayList();
    list.add(new Element(0));
    list.add(new Element(0));
    list.add(new Element(1));
    list.add(new Element(0));
    list.add(new Element(1));
    list.add(new Element(1));
    list.add(new Element(0));
    list.add(new Element(0));
    list.add(new Element(1));
    list.add(new Element(1));
    list.add(new Element(1));
    list.add(new Element(0));
    list.add(new Element(0));
    list.add(new Element(1));
    list.add(new Element(0));
    list.add(new Element(0));
    ((ListView) findViewById(android.R.id.list)).setAdapter(new SampleAdapter(this, list));
}

private class SampleAdapter extends BaseAdapter {

    private List list;
    private Context context;

    public SampleAdapter(Context context, List list) {
        this.list = list;
        this.context = context;
    }

    @Override
    public int getCount() {
        return list.size();
    }

    @Override
    public Element getItem(int position) {
        return list.get(position);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        if (convertView == null)
            switch (getItemViewType(position)) {
            case 0:
                convertView = new CheckBox(context);
                break;
            default:
                convertView = new Button(context);
                break;
            }
        // Output here shows that you can lay on getItemViewType(position) as indicator of convertView type or structure
        Log.e("test", getItemViewType(position) + ": " + convertView.getClass().getSimpleName());
        return convertView;
    }

    @Override
    public int getItemViewType(int position) {
        return getItem(position).type;
    }

    @Override
    public int getViewTypeCount() {
        return 2;
    }

    @Override
    public long getItemId(int position) {
        return position;
    }
}

private class Element {
    public int type;

    public Element(int type) {
        this.type = type;
    }
}
}