Android 以太网MAC地址，wifiMAC地址

public String getMAC() {

// 获取连接状态

ConnectivityManager mConnectivity = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);

//检查网络连接

NetworkInfo info = mConnectivity.getActiveNetworkInfo();

int netType = info.getType();

if (netType == ConnectivityManager.TYPE_WIFI) { //WIFI

WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);

WifiInfo infoWIFI = wifiManager.getConnectionInfo();

// 返回WIFIMAC

return infoWIFI.getMacAddress();

} else {

// 返回以太网MAC

return getPhoneMacAddress();

}

}

/**
* Get the STB MacAddress
*/
public String getPhoneMacAddress() {
try {
return loadFileAsString("/sys/class/net/eth0/address").toUpperCase().substring(0, 17);
} catch (IOException e) {
e.printStackTrace();
return null;
}
}

public static String loadFileAsString(String filePath) throws java.io.IOException {
StringBuffer fileData = new StringBuffer(1000);
BufferedReader reader = new BufferedReader(new FileReader(filePath));
char[] buf = new char[1024];
int numRead = 0;
while ((numRead = reader.read(buf)) != -1) {
String readData = String.valueOf(buf, 0, numRead);
fileData.append(readData);
}
reader.close();
return fileData.toString();
}