ImageViewer没有正常工作

Question

placeholderForTable = (EncodedImage) theme.getImage("placeholderWithAnimate.png");
placeholderForTable = placeholderForTable.scaledEncoded(screenWidth, 30 + (screenWidth * 1 / 3));
BusinessForumImagesConnection bfic = new BusinessForumImagesConnection();
bfic.businessForumImagesConnectionMethod(new ActionListener() {

@Override
public void actionPerformed(ActionEvent evt) {
    DefaultListModel<Image> images;
    if (bfic.response != null) {
        for (Map<String, Object> entrySet : bfic.response) {
            String imgUrl = (String) entrySet.get("imgUrl");
            Image adImage = URLImage.createToStorage(placeholderForTable, imgUrl.substring(0, imgUrl.lastIndexOf(".")), + imgUrl, URLImage.RESIZE_SCALE);
            adsSlideImagesArray.add(adImage);
        }
    }

    ImageViewer imv = new ImageViewer();
    Container adsContainer = BoxLayout.encloseY(imv);

    if (adsSlideImagesArray != null) {
        slideIndex = 0;
        images = new DefaultListModel<>(adsSlideImagesArray);
        imv.setImage(images.getItemAt(0));
        imv.setImageList(images);
        imv.setSwipePlaceholder(Image.createImage(100, 100));
        Runnable r = new Runnable() {
            public void run() {
                if (slideIndex < images.getSize()) {
                    nextImage = (Image) images.getItemAt(slideIndex);
                    if (nextImage != null) {
                        imv.setImage(nextImage);
                    }
                    slideIndex++;
                } else {
                    slideIndex = 0;
                }
            }
        };
        if (uITimer == null) {
            uITimer = new UITimer(r);
        }
        if (uITimer != null) {
            uITimer.schedule(5000, true, f); //5 seconds
        }
    }
});

Answer 1

>

确保您的计时器启动并且没有人取消它。

您看到的是占位符而不是图像吗？像这样的细节是必不可少的。

图像查看器堆栈中较深的图像不会被预取。请注意，Urlimage不是为图像查看器设计的，对于它来说可能是个坏主意，因为Urlimage可以调整图像的大小。我们建议使用下载方法为图像查看器获取完整尺寸的图像（请参阅这篇旧文章：https://www.codenameone.com/blog/image-viewer-from-the-web.html