Android 获取本机WIFI及3G网络IP

获取本机WIFI
private String getLocalIpAddress() {

        WifiManager wifiManager = (WifiManager) getSystemService(WIFI_SERVICE);

        WifiInfo wifiInfo = wifiManager.getConnectionInfo();

        // 获取32位整型IP地址

        int ipAddress = wifiInfo.getIpAddress();

        

        //返回整型地址转换成“*.*.*.*”地址

        return String.format("%d.%d.%d.%d",

                (ipAddress & 0xff), (ipAddress >> 8 & 0xff),

                (ipAddress >> 16 & 0xff), (ipAddress >> 24 & 0xff));

    }

3G网络IP
public static String getIpAddress() {

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()

                            && inetAddress instanceof Inet4Address) {

                        // if (!inetAddress.isLoopbackAddress() && inetAddress

                        // instanceof Inet6Address) {

                        return inetAddress.getHostAddress().toString();

                    }

                }

            }

        } catch (Exception e) {

            e.printStackTrace();

        }

        return null;

    }

	
public  String getLocalIpAddress() {

		String ipAddress = null;

		try {

			List<NetworkInterface> interfaces = Collections

					.list(NetworkInterface.getNetworkInterfaces());

			for (NetworkInterface iface : interfaces) {

				if (iface.getDisplayName().equals("eth0")) {

					List<InetAddress> addresses = Collections.list(iface

							.getInetAddresses());

					for (InetAddress address : addresses) {

						if (address instanceof Inet4Address) {

							ipAddress = address.getHostAddress();

						}

					}

				} else if (iface.getDisplayName().equals("wlan0")) {

					List<InetAddress> addresses = Collections.list(iface

							.getInetAddresses());

					for (InetAddress address : addresses) {

						if (address instanceof Inet4Address) {

							ipAddress = address.getHostAddress();

						}

					}

				}

			}

		} catch (SocketException e) {

			e.printStackTrace();

		}

		return ipAddress;

	}

　　

需添加如下权限：

   <uses-permission android:name="android.permission.INTERNET" /> 

   <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>