Android 手机获取当前IP

// 获取本机的ip
public String GetNetIp() {
URL infoUrl = null;
InputStream inStream = null;
String ipLine = "";
HttpURLConnection httpConnection = null;
try {
// http://city.ip138.com/ip2city.asp 本地子ip
// http://www.cmyip.com/
infoUrl = new URL("http://www.cmyip.com/");
URLConnection connection = infoUrl.openConnection();
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");

Pattern pattern = Pattern
.compile("((?:(?:25[0-5]|2[0-4]\\d|((1\\d{2})|([1-9]?\\d)))\\.){3}(?:25[0-5]|2[0-4]\\d|((1\\d{2})|([1-9]?\\d))))");
Matcher matcher = pattern.matcher(strber.toString());
if (matcher.find()) {
ipLine = matcher.group();
}
}

} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (inStream != null) {
inStream.close();
}
httpConnection.disconnect();
} catch (IOException e) {
e.printStackTrace();
}
}
return ipLine;

}

温馨提示：本方法执行不能再主线程中执行，否则会出现NetworkOnMainThreadException异常

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