Android XML 解析器跳过标签

我正在制作一个可以阅读 RSS 源的阅读器。起初我想使用一个库，但意识到他们无法加载一些数据，所以我决定制作自己的阅读器。但这是问题所在。我的解析器并不总是返回图像，具体取决于此 RSS 等站点图片位于内容：数据中 http://www.znbc.co.zm/?feed=rss2而对于像这样的 RSSBBC http://feeds.bbci.co.uk/news/world/africa/rss.xml图像在内容中找到：数据我在第一次迭代中无法获取所以我有下一个项目获取上一个项目的图像，下面是我的代码 String title = "";

    String description = "";
    String link = "";
    String encodedDesciption = "";
    String imgSrc = "image";
    boolean isItem = false;
    try {
        XmlPullParser xmlPullParser = Xml.newPullParser();
        xmlPullParser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false);
        xmlPullParser.setInput(inputStream, null);

       // xmlPullParser.nextTag();
        while (xmlPullParser.next() != XmlPullParser.END_DOCUMENT) {

            int eventType = xmlPullParser.getEventType();

            String name = xmlPullParser.getName();
            if(name == null)
                continue;

            if(eventType == XmlPullParser.END_TAG) {
                if(name.equalsIgnoreCase("item")) {
                    isItem = false;
                }
                continue;
            }

            if (eventType == XmlPullParser.START_TAG) {
                if(name.equalsIgnoreCase("item")) {
                    isItem = true;
                    continue;
                }
            }

            String result = "";
            if (xmlPullParser.next() == XmlPullParser.TEXT) {
                result = xmlPullParser.getText();
                xmlPullParser.nextTag();
            }

            if (name.equalsIgnoreCase(TITLE)) {
                title = result;
            } else if (name.equalsIgnoreCase(LINK)) {
                link = result;
            } else if (name.equalsIgnoreCase(DESCRIPTION)) {
                description = result;
            }else if (name.equalsIgnoreCase(DESCRIPTION_ENCODED)) {
                encodedDesciption = result;

            }


            if (title != null && link != null && description != null && imgSrc != null && encodedDesciption != null) {
                if(isItem) {
                    Document document = Jsoup.parse(encodedDesciption);
                    Element img = document.select("img").first();
                    if (img != null) {
                        imgSrc = img.attr("src");
                        Log.d(TAG, "Image found "+imgSrc);
                        img.remove();
                    }else  Log.d(TAG, "Image not found");
                    FeedItem feedItem = new FeedItem(title, description, encodedDesciption, imgSrc, link );
                    feeds.add(feedItem);
                    Log.d(TAG, feedItem.toString());
                }

                title = null;
                link = null;
                description = null;
                isItem = false;
            }


        }


    } catch (XmlPullParserException | IOException e) {
        e.printStackTrace();
    } finally {
        try {
            inputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

我如何获得权利content:data在正确的索引处？以及如何获取网址