安卓中获取ip地址

• 获取当前手机的ip地址

  public static String getIPAddress(Context context) {
  NetworkInfo info = ((ConnectivityManager) context
  .getSystemService(Context.CONNECTIVITY_SERVICE)).getActiveNetworkInfo();
  if (info != null && info.isConnected()) {
  if (info.getType() == ConnectivityManager.TYPE_MOBILE) {//当前使用2G/3G/4G网络
  try {
  //Enumeration en=NetworkInterface.getNetworkInterfaces();
  for (Enumeration en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements(); ) {
  NetworkInterface intf = en.nextElement();
  for (Enumeration enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements(); ) {
  InetAddress inetAddress = enumIpAddr.nextElement();
  if (!inetAddress.isLoopbackAddress() && inetAddress instanceof Inet4Address) {
  return inetAddress.getHostAddress();
  }
  }
  }
  } catch (SocketException e) {
  e.printStackTrace();
  }

  } else if (info.getType() == ConnectivityManager.TYPE_WIFI) {//当前使用无线网络
  WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
  WifiInfo wifiInfo = wifiManager.getConnectionInfo();
  String ipAddress = intIP2StringIP(wifiInfo.getIpAddress());//得到IPV4地址
  return ipAddress;
  }
  } else {
  //当前无网络连接,请在设置中打开网络
  }
  return null;
  }

  /**
  * 将得到的int类型的IP转换为String类型
  *
  * @param ip
  * @return
  */

  public static String intIP2StringIP(int ip) {
  return (ip & 0xFF) + "." +
  ((ip >> 8) & 0xFF) + "." +
  ((ip >> 16) & 0xFF) + "." +
  (ip >> 24 & 0xFF);
  }

• 获取设备的ip地址

  • 原理是遍历所有网络接口的所有IP地址。如果方法返回null，则设备没有可用的网络连接。方法返回的IP地址是设备正在使用的IP地址。

    public String getLocalIpAddress() {
    try {
    for (Enumeration en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements()😉 {
    NetworkInterface intf = en.nextElement();
    for (Enumeration enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements()😉 {
    InetAddress inetAddress = enumIpAddr.nextElement();
    if (!inetAddress.isLoopbackAddress()) {
    return inetAddress.getHostAddress().toString();
    }
    }
    }
    } catch (SocketException ex) {
    Log.e(LOG_TAG, ex.toString());
    }
    return null;
    }