Android 獲取本機WIFI及3G網絡IP

獲取本機WIFI
private String getLocalIpAddress() {
        WifiManager wifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
        WifiInfo wifiInfo = wifiManager.getConnectionInfo();
        // 獲取32位整型IP地址
        int ipAddress = wifiInfo.getIpAddress();
        
        //返回整型地址轉換成“*.*.*.*”地址
        return String.format("%d.%d.%d.%d",
                (ipAddress & 0xff), (ipAddress >> 8 & 0xff),
                (ipAddress >> 16 & 0xff), (ipAddress >> 24 & 0xff));
    }

3G網絡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;
	}

　　

需添加如下權限：

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

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