LWUIT : How to Prevent Button change its color in J2ME

Question

I've created an apps using LWUIT. It use the header bar, like this

enter image description here

It use the container. Under this header bar container I've created the scroll able list.

The strange part is, if I scroll this list, the color of the button (the menu button and filter button) in header bar changed. And it just happened when I tried the apps in device. When I try using it in emulator it just fine

Here is the code of the button I've created

    b_menu.getUnselectedStyle().setBorder(null);
    b_menu.getSelectedStyle().setBorder(null);
    b_menu.getPressedStyle().setBorder(null);
    b_menu.setIcon(ImageUtil.loadImage("/menu.png"));
    b_menu.setRolloverIcon(ImageUtil.loadImage("/menu.png"));
    b_menu.setPressedIcon(ImageUtil.loadImage("/menu.png"));
    b_menu.setName("menu");
    b_menu.getStyle().setBgTransparency(0);
    b_menu.getStyle().setBgPainter(new LinearGradientPainter(0xcf266a, 0xcf266a, false));
    b_menu.getSelectedStyle().setPadding(5, 5, 5, 5);
    b_menu.getSelectedStyle().setMargin(0, 0, 0, 0);
    b_menu.getUnselectedStyle().setPadding(5, 5, 5, 5);
    b_menu.getSelectedStyle().setMargin(0, 0, 0, 0);
    b_menu.getSelectedStyle().setBgColor(0xcf266a, false);
    b_menu.getSelectedStyle().setBgTransparency(0);
    b_menu.getSelectedStyle().setBgPainter(new LinearGradientPainter(0xcf266a, 0xcf266a, false));
    b_menu.getUnselectedStyle().setBgTransparency(0);
    b_menu.getUnselectedStyle().setBgPainter(new LinearGradientPainter(0xcf266a, 0xcf266a, false));
    b_menu.getPressedStyle().setBgTransparency(0);
    b_menu.getPressedStyle().setBgPainter(new LinearGradientPainter(0xcf266a, 0xcf266a, false));

Have you ever met and solve this problem?

Regards

Giri

How do you get to hide the native title Bar? I only get to set the app to full screen mode but I lost the top bar too. — Mun0n, Aug 13 '13 at 10:30
@jmunoz try this `Display.getInstance().setTouchScreenDevice(true); Display.getInstance().setCommandBehavior(BACK);` — giripp, Aug 16 '13 at 09:22
That doesn't work, I find a way to show the status bar using `Display.getInstance().setObjectTrait(Display.getInstance().getImplementation(), "nokia.ui.canvas.status_zone", Boolean.TRUE);` — Mun0n, Aug 20 '13 at 10:50
But I've another question....when you put your app in full screen mode, I suppose that you lost the back native button in all of your interfaces. How do you build this back buttons? — Mun0n, Aug 20 '13 at 10:52

score 2 · Accepted Answer · answered Dec 02 '12 at 22:35

Oh, the answer is I also have to change the unselected style. Here the code

    b_menu.getUnselectedStyle().setBorder(null);
    b_menu.getSelectedStyle().setBorder(null);
    b_menu.getPressedStyle().setBorder(null);

    b_menu.setIcon(ImageUtil.loadImage("/menu.png"));
    b_menu.setRolloverIcon(ImageUtil.loadImage("/menu.png"));
    b_menu.setPressedIcon(ImageUtil.loadImage("/menu.png"));

    b_menu.setName("menu");

    b_menu.getStyle().setBgTransparency(0);
    b_menu.getStyle().setBgPainter(new LinearGradientPainter(0xcf266a, 0xcf266a, false));

    b_menu.getSelectedStyle().setPadding(5, 5, 5, 5);
    b_menu.getSelectedStyle().setMargin(0, 0, 0, 0);
    b_menu.getSelectedStyle().setBgTransparency(0);
    b_menu.getSelectedStyle().setBgPainter(new LinearGradientPainter(0xcf266a, 0xcf266a, false));

    b_menu.getUnselectedStyle().setPadding(5, 5, 5, 5);
    b_menu.getUnselectedStyle().setMargin(0, 0, 0, 0);
    b_menu.getUnselectedStyle().setBgTransparency(0);
    b_menu.getUnselectedStyle().setBgPainter(new LinearGradientPainter(0xcf266a, 0xcf266a, false));

    b_menu.getPressedStyle().setBgTransparency(0);
    b_menu.getPressedStyle().setBgPainter(new LinearGradientPainter(0xcf266a, 0xcf266a, false));

    b_menu.addActionListener(this);
    b_menu.repaint();

Thanks for viewing this question!

Regards

Giri

LWUIT : How to Prevent Button change its color in J2ME

1 Answers1