android获取wifi外网ip的步骤

<span style="font-size:18px;">	// 获取外网IP	public static String GetNetIp() {		URL infoUrl = null;		InputStream inStream = null;		try {			// http://iframe.ip138.com/ic.asp			// infoUrl = new URL("http://city.ip138.com/city0.asp");			infoUrl = new URL("http://ip38.com");			URLConnection connection = infoUrl.openConnection();			HttpURLConnection httpConnection = (HttpURLConnection) connection;			int responseCode = httpConnection.getResponseCode();			if (responseCode == HttpURLConnection.HTTP_OK) {				inStream = httpConnection.getInputStream();				BufferedReader reader = new BufferedReader(						new InputStreamReader(inStream, "utf-8"));				StringBuilder strber = new StringBuilder();				String line = null;				while ((line = reader.readLine()) != null)					strber.append(line + "\n");				inStream.close();				// 从反馈的结果中提取出IP地址				// int start = strber.indexOf("[");				// Log.d("zph", "" + start);				// int end = strber.indexOf("]", start + 1);				// Log.d("zph", "" + end);				line = strber.substring(378, 395);				line.replaceAll(" ", "");				return line;			}		} catch (MalformedURLException e) {			e.printStackTrace();		} catch (IOException e) {			e.printStackTrace();		}		return null;	}</span>

另有一个获取外网IP的高端方法

public static String GetNetIp(){String IP = "";try{String address = "http://ip.taobao.com/service/getIpInfo2.php?ip=myip";URL url = new URL(address);HttpURLConnection connection = (HttpURLConnection) url.openConnection();connection.setUseCaches(false);if (connection.getResponseCode() == HttpURLConnection.HTTP_OK){InputStream in = connection.getInputStream();// 将流转化为字符串BufferedReader reader = new BufferedReader(new InputStreamReader(in));String tmpString = "";StringBuilder retJSON = new StringBuilder();while ((tmpString = reader.readLine()) != null){retJSON.append(tmpString + "\n");}JSONObject jsonObject = new JSONObject(retJSON.toString());String code = jsonObject.getString("code");if (code.equals("0")){JSONObject data = jsonObject.getJSONObject("data");IP = data.getString("ip") + "(" + data.getString("country")+ data.getString("area") + "区"+ data.getString("region") + data.getString("city")+ data.getString("isp") + ")";Log.e("提示", "您的IP地址是：" + IP);}else{IP = "";Log.e("提示", "IP接口异常，无法获取IP地址！");}}else{IP = "";Log.e("提示", "网络连接异常，无法获取IP地址！");}}catch (Exception e){IP = "";Log.e("提示", "获取IP地址时出现异常，异常信息是：" + e.toString());}return IP;}