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<NetworkInterface> en=NetworkInterface.getNetworkInterfaces();
                for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements(); ) {
                    NetworkInterface intf = en.nextElement();
                    for (Enumeration<InetAddress> 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<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
              NetworkInterface intf = en.nextElement();
              for (Enumeration<InetAddress> 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;
      }