android - ArrayAdapter の getView" は呼び出されません

Question

カスタム アダプタがあり、その「getView」が呼び出されていません。それが私の主な活動です：

public class MainActivity extends Activity {
RelativeLayout mainRelativeLayout;
ListView listViewOne;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    String[] values1 = new String[] { " ", "Android", "iPhone", "WindowsMobile" };
    ListArr listArr = new ListArr(this, 3);
    listArr.AddListToListArr(values1);
}

}

それは私のアダプターです：

public class MyAdapter extends ArrayAdapter<String> {
private final Context context;
private final String[] values;
private TextView textView;
private ImageView icon;

public MyAdapter(Context context, String[] values) {
    super(context, R.layout.first_row, values);
    this.context = context;
    this.values = values;
}

@Override
public int getCount() {
    return values.length;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    LayoutInflater inflater = (LayoutInflater) context
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View rowView;

    rowView = inflater.inflate(R.layout.first_row, parent, false);
    textView = (TextView) rowView.findViewById(R.id.row_text_view);

    icon.setImageDrawable(context.getResources().getDrawable(R.drawable.ic_launcher));
    textView.setText(values[position]);
    return rowView;
}}

それはリストを作成しているクラスです:

public class ListArr {
int indexOfEmptyCellInArr;
ListView[] listArr;
Context context;
LinearLayout mainRelativeLayout;

public ListArr(Context context, int numOFLists) {
    this.listArr = new ListView[numOFLists];
    this.indexOfEmptyCellInArr = 0;
    this.context = context;
    LayoutInflater inflater = (LayoutInflater) context
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View v = inflater.inflate(R.layout.activity_main, null);
    this.mainRelativeLayout = (LinearLayout) v.findViewById(R.id.main_relative_layout);
}

public void AddListToListArr(String[] stringsOfNewList) {
    ArrayAdapter<String> arrayAdapter = new MyAdapter(context, stringsOfNewList);
    ListView listview = new ListView(context);
    listview.setAdapter(arrayAdapter);
    listArr[indexOfEmptyCellInArr] = listview;
    mainRelativeLayout.addView(listArr[indexOfEmptyCellInArr]);

    indexOfEmptyCellInArr++;
}

public void RemoveLastList(){
    int indexOfListToRemove = indexOfEmptyCellInArr - 1;
    listArr[indexOfListToRemove] = null;
    indexOfEmptyCellInArr--;
}

getView が呼び出されていないのはなぜですか? ありがとう！