jMonkeyEngine.org

Is there a way to change the background image of a Nifty button in Java or do I need to create a new button and add it? I see methods for changing the button text, but not the background image.

I changed the button to an image and put a text line under it. It’s much easier to change the image on an image than a button by using the ImageRenderer.

        if (screen.getScreenId().equals("introScreen2")) {
            for (int i=0; i<app.getLevelFileNames().size(); i++) {
                LevelName levelName = app.getLevelFileNames().get(i);

                // find the image element
                Element imageElement = screen.findElementByName("imageLevel" + String.valueOf(i));
                // get the ImageRenderer
                ImageRenderer imageRenderer = imageElement.getRenderer(ImageRenderer.class);
                // change the image
                imageRenderer.setImage(nifty.getRenderEngine().createImage("Interface/Nifty/Images/unlocked.png", false));

                // find the text element
                Element textElement = screen.findElementByName("labelLevel" + String.valueOf(i));
                // get the TextRenderer
                TextRenderer textRenderer = textElement.getRenderer(TextRenderer.class);
                // change the text
                textRenderer.setText(levelName.displayName);
                // resetLayout to get the new text wrapping to display correctly
                textRenderer.resetLayout(textElement);

            }
            // resetLayers to get the lower elements to move down due to new text wrapping on items above
            screen.layoutLayers();
        }