Android: fill a listview with an object

I am wondering if it is possible to put a list of TextView inside a Listview in Android. I tried this code but the result does not give me the right text wanted. I want to display 20 toto for testing.

Here my Main.class

public class MainActivity extends Activity {

private ListView listview;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    listview = (ListView) findViewById(R.id.listcontacts);

    // Instanciating an array list (you don't need to do this, 
    // you already have yours).
    List<TextView> contacts = new ArrayList<TextView>();
    for(int i = 0 ; i< 20; i++)
    {
        TextView toto = new TextView(this);
        toto.setText("toto");
        contacts.add(toto);

    }

    // This is the array adapter, it takes the context of the activity as a 
    // first parameter, the type of list view as a second parameter and your 
    // array as a third parameter.
    ArrayAdapter<TextView> arrayAdapter = new ArrayAdapter<TextView>(
            this, 
            android.R.layout.simple_list_item_1,
            contacts );

    listview.setAdapter(arrayAdapter); 
}

Then the XML file of main

 <ListView
        android:id="@+id/listcontacts"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >

 </ListView>

Should I need to create a TextView inside my listview and call "findViewById(TextView)" in my class?

Thanks.