Android 获取Web地址栏参数

String url = entity.getTPXW_ImgUrl().toString();
                String[] parameters = { "ClassID" };
                String u;
                try {
                    u = URLDecoder.decode(url, "UTF-8");
                    String[] strLength = new String[0];
                    int strSplit1 = 0;
                    int strSplit2 = 0;
                    String strValue = "";
                    for (String s : parameters) {
                        if (u.indexOf(s) != -1) {
                            strLength = (u.substring(u.indexOf(s))).split("&");
                        }
                        for (int j = 0; j < strLength.length; j++) {
                            strValue += strLength[j];
                        }
                    }
                    if (strLength.length <= 0) {
                        strLength = null;
                    } else {
                        strSplit1 = strValue.indexOf("NewsID=");
                        String value1 = strValue.substring(8, strSplit1);
                        strSplit2 = strValue.lastIndexOf("=");
                        String value2 = strValue.substring(strSplit2 + 1,
                                strValue.length());
                        entity.setTPXW_ClassID(Integer.parseInt(value1));
                        entity.setTPXW_NewsID(Integer.parseInt(value2));
                    }
                } catch (UnsupportedEncodingException e) {
                    e.printStackTrace();
                }