Android获取Mac地址-适配所有版本
最近由于项目需要MAC地址的记录，搞了一个通用的适配类，目前经过测试可以适配Android所有版本，我测试过的设备系统Android 4 5 6 7 7+都可以获取到，废话不多说直接上代码，简洁：
该类分为三类：Android6.0以下、6.0以上7.0以下、7.0以上
首先是获取MAC的整合方法：
public static String getMac(Context context) {
String strMac = null;
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
Log.e("=====", "6.0以下");
Toast.makeText(context, "6.0以下", Toast.LENGTH_SHORT).show();
strMac = getLocalMacAddressFromWifiInfo(context);
return strMac;
} else if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N
&& Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
Log.e("=====", "6.0以上7.0以下");
Toast.makeText(context, "6.0以上7.0以下", Toast.LENGTH_SHORT).show();
strMac = getMacAddress(context);
return strMac;
} else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
Log.e("=====", "7.0以上");
if (!TextUtils.isEmpty(getMacAddress())) {
Log.e("=====", "7.0以上1");
Toast.makeText(context, "7.0以上1", Toast.LENGTH_SHORT).show();
strMac = getMacAddress();
return strMac;
} else if (!TextUtils.isEmpty(getMachineHardwareAddress())) {
Log.e("=====", "7.0以上2");
Toast.makeText(context, "7.0以上2", Toast.LENGTH_SHORT).show();
strMac = getMachineHardwareAddress();
return strMac;
} else {
Log.e("=====", "7.0以上3");
Toast.makeText(context, "7.0以上3", Toast.LENGTH_SHORT).show();
strMac = getLocalMacAddressFromBusybox();
return strMac;
}
}
return "02:00:00:00:00:00";
}6.0以下方法，Google提供的公有方法，需要权限
android:name="android.permission.ACCESS_WIFI_STATE" /> /**
* 根据wifi信息获取本地mac
* @param context
* @return
*/
public static String getLocalMacAddressFromWifiInfo(Context context){
WifiManager wifi = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
WifiInfo winfo = wifi.getConnectionInfo();
String mac = winfo.getMacAddress();
return mac;
}android 6.0及以上、7.0以下
android 6.0以后 将不再能通过 wifimanager 获取mac，获取到的mac将是固定的：02:00:00:00:00:00 。
然而我开发的sdk就是通过wifimanager获取的mac。
android sdk后来做了6.0适配，通过cat /sys/class/net/wlan0/address，可以在6.0上获取mac地址。
/**
* android 6.0及以上、7.0以下 获取mac地址
*
* @param context
* @return
*/
public static String getMacAddress(Context context) {
// 如果是6.0以下，直接通过wifimanager获取
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
String macAddress0 = getMacAddress0(context);
if (!TextUtils.isEmpty(macAddress0)) {
return macAddress0;
}
}
String str = "";
String macSerial = "";
try {
Process pp = Runtime.getRuntime().exec(
"cat /sys/class/net/wlan0/address");
InputStreamReader ir = new InputStreamReader(pp.getInputStream());
LineNumberReader input = new LineNumberReader(ir);
for (; null != str; ) {
str = input.readLine();
if (str != null) {
macSerial = str.trim();// 去空格
break;
}
}
} catch (Exception ex) {
Log.e("----->" + "NetInfoManager", "getMacAddress:" + ex.toString());
}
if (macSerial == null || "".equals(macSerial)) {
try {
return loadFileAsString("/sys/class/net/eth0/address")
.toUpperCase().substring(0, 17);
} catch (Exception e) {
e.printStackTrace();
Log.e("----->" + "NetInfoManager",
"getMacAddress:" + e.toString());
}
}
return macSerial;
}
private static String getMacAddress0(Context context) {
if (isAccessWifiStateAuthorized(context)) {
WifiManager wifiMgr = (WifiManager) context
.getSystemService(Context.WIFI_SERVICE);
WifiInfo wifiInfo = null;
try {
wifiInfo = wifiMgr.getConnectionInfo();
return wifiInfo.getMacAddress();
} catch (Exception e) {
Log.e("----->" + "NetInfoManager",
"getMacAddress0:" + e.toString());
}
}
return "";
}
/**
* Check whether accessing wifi state is permitted
*
* @param context
* @return
*/
private static boolean isAccessWifiStateAuthorized(Context context) {
if (PackageManager.PERMISSION_GRANTED == context
.checkCallingOrSelfPermission("android.permission.ACCESS_WIFI_STATE")) {
Log.e("----->" + "NetInfoManager", "isAccessWifiStateAuthorized:"
+ "access wifi state is enabled");
return true;
} else
return false;
}
private static String loadFileAsString(String fileName) throws Exception {
FileReader reader = new FileReader(fileName);
String text = loadReaderAsString(reader);
reader.close();
return text;
}
private static String loadReaderAsString(Reader reader) throws Exception {
StringBuilder builder = new StringBuilder();
char[] buffer = new char[4096];
int readLength = reader.read(buffer);
while (readLength >= 0) {
builder.append(buffer, 0, readLength);
readLength = reader.read(buffer);
}
return builder.toString();
}android 7.0及以上
android 7.0 后，通过上述适配的方法，将获取不到mac地址。
经过调研和测试，7.0上仍有办法回去mac地址：
总共分为三种方式：（1）通过ip地址来获取绑定的mac地址
（2）扫描各个网络接口获取mac地址
（3）通过busybox获取本地存储的mac地址
代码如下：
/**
* 根据IP地址获取MAC地址
*
* @return
*/
public static String getMacAddress() {
String strMacAddr = null;
try {
// 获得IpD地址
InetAddress ip = getLocalInetAddress();
byte[] b = NetworkInterface.getByInetAddress(ip)
.getHardwareAddress();
StringBuffer buffer = new StringBuffer();
for (int i = 0; i < b.length; i++) {
if (i != 0) {
buffer.append(':');
}
String str = Integer.toHexString(b[i] & 0xFF);
buffer.append(str.length() == 1 ? 0 + str : str);
}
strMacAddr = buffer.toString().toUpperCase();
} catch (Exception e) {
}
return strMacAddr;
}
/**
* 获取移动设备本地IP
*
* @return
*/
private static InetAddress getLocalInetAddress() {
InetAddress ip = null;
try {
// 列举
Enumeration en_netInterface = NetworkInterface
.getNetworkInterfaces();
while (en_netInterface.hasMoreElements()) {// 是否还有元素
NetworkInterface ni = (NetworkInterface) en_netInterface
.nextElement();// 得到下一个元素
Enumeration en_ip = ni.getInetAddresses();// 得到一个ip地址的列举
while (en_ip.hasMoreElements()) {
ip = en_ip.nextElement();
if (!ip.isLoopbackAddress()
&& ip.getHostAddress().indexOf(":") == -1)
break;
else
ip = null;
}
if (ip != null) {
break;
}
}
} catch (SocketException e) {
e.printStackTrace();
}
return ip;
}
/**
* 获取本地IP
*
* @return
*/
private static String getLocalIpAddress() {
try {
for (Enumeration en = NetworkInterface
.getNetworkInterfaces(); en.hasMoreElements(); ) {
NetworkInterface intf = en.nextElement();
for (Enumeration enumIpAddr = intf
.getInetAddresses(); enumIpAddr.hasMoreElements(); ) {
InetAddress inetAddress = enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress()) {
return inetAddress.getHostAddress().toString();
}
}
}
} catch (SocketException ex) {
ex.printStackTrace();
}
return null;
} /**
* android 7.0及以上 （2）扫描各个网络接口获取mac地址
*
*/
/**
* 获取设备HardwareAddress地址
*
* @return
*/
public static String getMachineHardwareAddress() {
Enumeration interfaces = null;
try {
interfaces = NetworkInterface.getNetworkInterfaces();
} catch (SocketException e) {
e.printStackTrace();
}
String hardWareAddress = null;
NetworkInterface iF = null;
if (interfaces == null) {
return null;
}
while (interfaces.hasMoreElements()) {
iF = interfaces.nextElement();
try {
hardWareAddress = bytesToString(iF.getHardwareAddress());
if (hardWareAddress != null)
break;
} catch (SocketException e) {
e.printStackTrace();
}
}
return hardWareAddress;
}
/***
* byte转为String
*
* @param bytes
* @return
*/
private static String bytesToString(byte[] bytes) {
if (bytes == null || bytes.length == 0) {
return null;
}
StringBuilder buf = new StringBuilder();
for (byte b : bytes) {
buf.append(String.format("%02X:", b));
}
if (buf.length() > 0) {
buf.deleteCharAt(buf.length() - 1);
}
return buf.toString();
} /**
* android 7.0及以上 （3）通过busybox获取本地存储的mac地址
*
*/
/**
* 根据busybox获取本地Mac
*
* @return
*/
public static String getLocalMacAddressFromBusybox() {
String result = "";
String Mac = "";
result = callCmd("busybox ifconfig", "HWaddr");
// 如果返回的result == null，则说明网络不可取
if (result == null) {
return "网络异常";
}
// 对该行数据进行解析
// 例如：eth0 Link encap:Ethernet HWaddr 00:16:E8:3E:DF:67
if (result.length() > 0 && result.contains("HWaddr") == true) {
Mac = result.substring(result.indexOf("HWaddr") + 6,
result.length() - 1);
result = Mac;
}
return result;
}
private static String callCmd(String cmd, String filter) {
String result = "";
String line = "";
try {
Process proc = Runtime.getRuntime().exec(cmd);
InputStreamReader is = new InputStreamReader(proc.getInputStream());
BufferedReader br = new BufferedReader(is);
while ((line = br.readLine()) != null
&& line.contains(filter) == false) {
result += line;
}
result = line;
} catch (Exception e) {
e.printStackTrace();
}
return result;
}