DirectionalLayout 动态添加组件问题

怎么样在 DirectionalLayout 中动态添加组件？

我想在 DirectionalLayout 里面添加两个组件，代码如下：

private void  initTabMenu(){
    DirectionalLayout tabMenu = findComponentById(ResourceTable.Id_tabMenu);
    DirectionalLayout tabMenuItem1 =
            (DirectionalLayout) LayoutScatter.getInstance(getContext()).parse(ResourceTable.Layout_tab_menuitem, tabMenu, false);
    Image image1 = tabMenuItem1.findComponentById(ResourceTable.Id_tab_menu_item_image);
    image1.setPixelMap(ResourceTable.Media_fruit_icons_01);
    Text text1 = tabMenuItem1.findComponentById(ResourceTable.Id_tab_menu_item_text);
    text1.setText("Menu1");

    tabMenu.addComponent(tabMenuItem1);

    DirectionalLayout tabMenuItem2 =
            (DirectionalLayout) LayoutScatter.getInstance(getContext()).parse(ResourceTable.Layout_tab_menuitem, tabMenu, false);
    Image image2 = tabMenuItem2.findComponentById(ResourceTable.Id_tab_menu_item_image);
    image2.setPixelMap(ResourceTable.Media_fruit_icons_02);
    Text text2 = tabMenuItem2.findComponentById(ResourceTable.Id_tab_menu_item_text);
    text2.setText("Menu2");

    tabMenu.addComponent(tabMenuItem2);
}

实际却只有一个组件添加上了：

我想知道要怎么样才可以在 DirectionalLayout 里添加组件？