Android解析微博小尾巴

/**
     * 格式化微博来源小尾巴
     * 
     * @param sourceString
     * @return
     */
    public static String formatWeiboSource(String sourceString) {
        ByteArrayInputStream bais = null;
        try {
            if (sourceString != null && !sourceString.trim().equals("")) {
                bais = new ByteArrayInputStream(sourceString.getBytes());
                XmlPullParser parser = Xml.newPullParser();
                try {
                    parser.setInput(bais, "UTF-8");
                    int eventType = parser.getEventType();
                    int i=0;
                    while (eventType != XmlPullParser.END_DOCUMENT) {
                        Log.i("test", "循环次数"+i++);
                        switch (eventType) {
                        case XmlPullParser.START_DOCUMENT:// 文档开始事件,可以进行数据初始化处理

                            break;
                        case XmlPullParser.START_TAG:// 开始元素事件
                            String name = parser.getName();
                            if (name.equalsIgnoreCase("a")) {
                                String resultString = parser.nextText();
                                Log.i("test", "小尾巴："+resultString);
                                return resultString;
                            }
                            break;
                        case XmlPullParser.END_TAG:
                            break;

                        default:
                            break;
                        }
                        eventType = parser.next();
                    }
                    bais.close();
                } catch (Exception e) {
                    e.printStackTrace();
                    // TODO: handle exception
                }
            }
        } catch (Exception e) {
            // TODO: handle exception
            e.printStackTrace();
            return "";
        }

        return "";
    }