Android获取外网ip

平时开发个过程中 需要app上传外网的ip 进行统计......
网上看了好多贴发现好多都是访问一个链接而且各种连接都不靠谱
自己整理了一个好一点的连接和代码 希望对大家能有帮助 http://pv.sohu.com/cityjson?ie=utf-8

<pre name="code" class="java">/**
* 获取外网的IP(要访问Url，要放到后台线程里处理)
*
* @return String
*/
public void getNetIp() {
Thread thread = new Thread() {
@Override
protected String doInBackground(Void... params) {
URL infoUrl = null;
InputStream inStream = null;
String line = "";
try {
infoUrl = new URL("http://pv.sohu.com/cityjson?ie=utf-8");
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();
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("{");
int end = strber.indexOf("}");
String json = strber.substring(start, end + 1);
if (json != null) {
try {
JSONObject jsonObject = new JSONObject(json);
line = jsonObject.optString("cip");
} catch (JSONException e) {
e.printStackTrace();
}

}
return line;
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return line;
}
});
thread .start();
}