Android机顶盒取网卡的Mac地址

android机顶盒上一般有两个网卡，一个有线一个无线，那么在获取mac地址来唯一标识一台终端的时候取那个呢？经过讨论，取有线的Mac地址。但是当前如果我只用的是wifi呢？怎么取有线网卡的mac地址，经过观察settings里面的源码，发现了获取有线网卡mac地址的方法，即使当前机顶盒连接时wifi，如下：

public String getEth0HW(){EthernetManager ethManager = (EthernetManager) getSystemService(Context.ETHERNET_SERVICE);String str = ethManager.getEthernetHwaddr(ethManager.getEthernetIfaceName());if(null == str){str = "null";}return str ;}

/**
* 获取wifi模块的mac地址，即使wifi是关闭的，需要添加权限 ACCESS_WIFI_STATE
* @param context
* @return
*/
public static String getWifiMac(Context context){
WifiManager wifi = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
WifiInfo info = wifi.getConnectionInfo();
String mac = info.getMacAddress();
Log.e("","wifi mac : " + mac);
return mac ;
}

下面的方法是取当前连接网络的mac地址：

获取当前连接网络的网卡的mac地址private static String parseByte(byte b) {String s = "00" + Integer.toHexString(b)+":";return s.substring(s.length() - 3);}/** * 获取当前系统连接网络的网卡的mac地址 * @return */@SuppressLint("NewApi")public static final String getMac() {byte[] mac = null;StringBuffer sb = new StringBuffer();try {Enumeration<NetworkInterface> netInterfaces = NetworkInterface.getNetworkInterfaces();while (netInterfaces.hasMoreElements()) {NetworkInterface ni = netInterfaces.nextElement();Enumeration<InetAddress> address = ni.getInetAddresses();while (address.hasMoreElements()) {InetAddress ip = address.nextElement();if (ip.isAnyLocalAddress() || !(ip instanceof Inet4Address) || ip.isLoopbackAddress())continue;if (ip.isSiteLocalAddress())mac = ni.getHardwareAddress();else if (!ip.isLinkLocalAddress()) {mac = ni.getHardwareAddress();break;}}}} catch (SocketException e) {e.printStackTrace();}if(mac != null){for(int i=0 ;i<mac.length ;i++){sb.append(parseByte(mac[i]));}return sb.substring(0, sb.length()-1);}else{return UpdateService.mDefaultMacAddress;}}}

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