How to combine two array list and show in a listview in android

Question

I want to combine two ArrayList into a single one.

My first arraylist looks like this:

{a,s,d,f,g,h,......}

My second arraylist lo

Answer 1

List a = new ArrayList();
a.add("bla");
a.add("bla");
a.add("bla");
List b = new ArrayList();
b.add("Boo");
b.add("Boo");
b.add("Boo");

// Append content of a to b
b.addAll(a);

// New list containing a union b
List union = new ArrayList(a);
union.addAll(b);

To show that in a list view, you will need an adapter along with a list view. I recommend you read the Android Developer guide's tutorial about ListView: Hello ListView

public class HelloListView extends ListActivity {
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    List b = new ArrayList();
    b.add("Boo");
    b.add("Boo");
    b.add("Boo");

    setListAdapter(new ArrayAdapter(this,
            android.R.layout.simple_list_item_1, b));
  }
}