github地址：https://github.com/Dragonxwl/MyBasePro

1.ParseXmlService
xml文件流解析工具类

public class ParseXmlService {

    public HashMap<String, String> parseXml(InputStream inStream)
            throws Exception {
        HashMap<String, String> hashMap = new HashMap<String, String>();

        // 实例化一个文档构建器工厂
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        // 通过文档构建器工厂获取一个文档构建器
        DocumentBuilder builder = factory.newDocumentBuilder();
        // 通过文档构建器构建一个文档实例
        Document document = builder.parse(inStream);
        // 获取XML文件根节点
        Element root = document.getDocumentElement();
        // 获得子节点
        NodeList childNodes = root.getChildNodes();
        for (int y = 0; y < childNodes.getLength(); y++) {
            if (childNodes.item(y).getNodeType() == Node.ELEMENT_NODE) {
                if ("h5CoursewareUrl".equals(childNodes.item(y).getNodeName())) {
                    String h5CoursewareUrl = childNodes.item(y).getTextContent();
                    hashMap.put("KJUrl", h5CoursewareUrl);
                }
            }
        }

        return hashMap;
    }
}

2.在子线程中加载xml文件获取文件流然后解析

Runnable runnable = new Runnable() {
                    @Override
                    public void run() {
                        URL url = null;
                        try {
                            url = new URL(TextView_xml.getText().toString());
                            HttpURLConnection conn = (HttpURLConnection) url
                                    .openConnection();
                            conn.setConnectTimeout(5000);
                            // 把version.xml放到网络上，然后获取文件信息
                            ParseXmlService service = new ParseXmlService();
                            InputStream inStream = conn.getInputStream();
                            final HashMap<String, String> mHashMap = service.parseXml(inStream);
                            handler.post(new Runnable() {
                                @Override
                                public void run() {
                                    TextView_value.setText(mHashMap.get("KJUrl"));
                                }
                            });
                        } catch (Exception e) {
                            e.printStackTrace();
                        }
                    }
                };
                Thread thread = new Thread(runnable);
                thread.start();

3.xml文件内容截图

image.png