java - 将图像设置为第二个图像

Question

我是黑莓新手，我正在开发一个黑莓应用程序，在其中我制作一个登录屏幕，其中一个白色 strip 图像放置在顶部， Logo 应出现在该 strip 上。所以我简单地为它准备了两个horizo​​ntalFieldManager，对于 strip ，它会显示良好，但 Logo 保留在 strip 下方。

这是我的代码::

((VerticalFieldManager) getMainManager()).setBackground(BackgroundFactory.createSolidBackground(0xEDEDED));

        HorizontalFieldManager hfm =  new HorizontalFieldManager(Field.FIELD_VCENTER );
        HorizontalFieldManager hfm2 =  new HorizontalFieldManager(Field.FIELD_VCENTER );
        Bitmap Topstrip = new Bitmap(Display.getWidth(), Display.getHeight());
        Bitmap MoneLogo = new Bitmap(Display.getWidth(), Display.getHeight());
        boolean lowRes = Display.getWidth() <= 320;
        if (lowRes)
        {
            // The device has a low resolution screen size
            Topstrip = Bitmap.getBitmapResource("topstripbg.png");
        }
        else
        {
            Topstrip = Bitmap.getBitmapResource("topstripbg-mdpi.png");
            MoneLogo= Bitmap.getBitmapResource("logo72X72.png");
            // The device has a high resolution screen size

        }
        BitmapField TopstripimgField = new BitmapField(Topstrip);
        BitmapField MoneLogoimgField = new BitmapField(MoneLogo);

        hfm.add(TopstripimgField);
        hfm2.add(MoneLogoimgField);
        add(hfm);
        add(hfm2);

我想要这样::

--------------------------------------
 ____
|LOGO|           ** Strip ** 
|____|
--------------------------------------

还请为我推荐良好的 UI 教程以实现最佳实践

更新:

Answer 1

试试这个 -

final Bitmap bg=Bitmap.getBitmapResource("background.png");
    VerticalFieldManager top = new VerticalFieldManager(Manager.NO_HORIZONTAL_SCROLL | Manager.NO_HORIZONTAL_SCROLLBAR | Manager.VERTICAL_SCROLL | Manager.VERTICAL_SCROLLBAR | Field.USE_ALL_WIDTH){
        public void paint(Graphics graphics) {
            graphics.setBackgroundColor(Color.WHITE);
            graphics.clear();
            graphics.drawBitmap(0, 0, bg.getWidth(),
                    bg.getHeight(), bg, 0, 0);
            super.paint(graphics);
        }

    };


final Bitmap logo= Bitmap.getBitmapResource("logo.png");
top .add(new BitmapField(logo));
add(top);