Several methods of obtaining Mac address by Android mobile phone
- 2021-11-02 02:29:18
- OfStack
The most commonly used method is obtained through WiFiManager:
/**
* Pass WiFiManager Get mac Address
* @param context
* @return
*/
private static String tryGetWifiMac(Context context) {
WifiManager wm = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
WifiInfo wi = wm.getConnectionInfo();
if (wi == null || wi.getMacAddress() == null) {
return null;
}
if ("02:00:00:00:00:00".equals(wi.getMacAddress().trim())) {
return null;
} else {
return wi.getMacAddress().trim();
}
}
This method Android 7.0 can't be obtained, but returns null, which actually returns "02:00: 00:00: 00:00"
Obtain from local IP:
/**
* According to IP Address acquisition MAC Address
* @return
*/
private static String getLocalMacAddressFromIp() {
String strMacAddr = null;
try {
// Obtain IpD Address
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;
}
/**
* Get mobile device local IP
* @return
*/
private static InetAddress getLocalInetAddress() {
InetAddress ip = null;
try {
// Enumerate
Enumeration<NetworkInterface> en_netInterface = NetworkInterface.getNetworkInterfaces();
while (en_netInterface.hasMoreElements()) {// Are there any more elements
NetworkInterface ni = (NetworkInterface) en_netInterface.nextElement();// Get the following 1 Elements
Enumeration<InetAddress> en_ip = ni.getInetAddresses();// Get 1 A ip Enumeration of addresses
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;
}
This method is available in Android 7.0 and below.
Obtain from the network interface:
/**
* Get through the network interface
* @return
*/
private static String getNewMac() {
try {
List<NetworkInterface> all = Collections.list(NetworkInterface.getNetworkInterfaces());
for (NetworkInterface nif : all) {
if (!nif.getName().equalsIgnoreCase("wlan0")) continue;
byte[] macBytes = nif.getHardwareAddress();
if (macBytes == null) {
return null;
}
StringBuilder res1 = new StringBuilder();
for (byte b : macBytes) {
res1.append(String.format("%02X:", b));
}
if (res1.length() > 0) {
res1.deleteCharAt(res1.length() - 1);
}
return res1.toString();
}
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
Note that Name of network interface has many similarities: dummy0, p2p0, wlan0... where wlan0 is the address we need WiFi mac. This method is available in Android 7.0 and below.
Summarize