问题
I need to obtain the MAC address of my android device using Java. I\'ve searched online, but I haven\'t found anything useful.
回答1:
As was already pointed out in the comment, the MAC address can be received via the WifiManager.
WifiManager manager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
WifiInfo info = manager.getConnectionInfo();
String address = info.getMacAddress();
Also do not forget to add the appropriate permissions into your AndroidManifest.xml
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
Please refer to Android 6.0 Changes.
To provide users with greater data protection, starting in this release, Android removes programmatic access to the device’s local hardware identifier for apps using the Wi-Fi and Bluetooth APIs. The WifiInfo.getMacAddress() and the BluetoothAdapter.getAddress() methods now return a constant value of 02:00:00:00:00:00.
To access the hardware identifiers of nearby external devices via Bluetooth and Wi-Fi scans, your app must now have the ACCESS_FINE_LOCATION or ACCESS_COARSE_LOCATION permissions.
回答2:
Getting the MAC address through WifiInfo.getMacAddress() won't work on Marshmallow and above, it has been disabled and will return the constant value of 02:00:00:00:00:00.
回答3:
public static String getMacAddr() {
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 "";
}
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) {
}
return "02:00:00:00:00:00";
}
回答4:
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
public String getMacAddress(Context context) {
WifiManager wimanager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
String macAddress = wimanager.getConnectionInfo().getMacAddress();
if (macAddress == null) {
macAddress = "Device don't have mac address or wi-fi is disabled";
}
return macAddress;
}
have others way here
回答5:
I founded this solution from http://robinhenniges.com/en/android6-get-mac-address-programmatically and it's working for me! Hope helps!
public static String getMacAddr() {
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 "";
}
StringBuilder res1 = new StringBuilder();
for (byte b : macBytes) {
String hex = Integer.toHexString(b & 0xFF);
if (hex.length() == 1)
hex = "0".concat(hex);
res1.append(hex.concat(":"));
}
if (res1.length() > 0) {
res1.deleteCharAt(res1.length() - 1);
}
return res1.toString();
}
} catch (Exception ex) {
}
return "";
}
回答6:
Its Working with Marshmallow
package com.keshav.fetchmacaddress;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;
import java.util.Collections;
import java.util.List;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Log.e("keshav","getMacAddr -> " +getMacAddr());
}
public static String getMacAddr() {
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 "";
}
StringBuilder res1 = new StringBuilder();
for (byte b : macBytes) {
res1.append(Integer.toHexString(b & 0xFF) + ":");
}
if (res1.length() > 0) {
res1.deleteCharAt(res1.length() - 1);
}
return res1.toString();
}
} catch (Exception ex) {
//handle exception
}
return "";
}
}
回答7:
You can get mac address:
WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
WifiInfo wInfo = wifiManager.getConnectionInfo();
String mac = wInfo.getMacAddress();
Set Permission in Menifest.xml
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>
回答8:
You can no longer get the hardware MAC address of a android device. WifiInfo.getMacAddress() and BluetoothAdapter.getAddress() methods will return 02:00:00:00:00:00. This restriction was introduced in Android 6.0.
But Rob Anderson found a solution which is working for < Marshmallow : https://stackoverflow.com/a/35830358
回答9:
Taken from the Android sources here. This is the actual code that shows your MAC ADDRESS in the system's settings app.
private void refreshWifiInfo() {
WifiInfo wifiInfo = mWifiManager.getConnectionInfo();
Preference wifiMacAddressPref = findPreference(KEY_MAC_ADDRESS);
String macAddress = wifiInfo == null ? null : wifiInfo.getMacAddress();
wifiMacAddressPref.setSummary(!TextUtils.isEmpty(macAddress) ? macAddress
: getActivity().getString(R.string.status_unavailable));
Preference wifiIpAddressPref = findPreference(KEY_CURRENT_IP_ADDRESS);
String ipAddress = Utils.getWifiIpAddresses(getActivity());
wifiIpAddressPref.setSummary(ipAddress == null ?
getActivity().getString(R.string.status_unavailable) : ipAddress);
}
回答10:
Using this simple method
WifiManager wm = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
String WLANMAC = wm.getConnectionInfo().getMacAddress();
回答11:
I think I just found a way to read MAC addresses without LOCATION permission: Run ip link and parse its output. (you could probably do the similar by looking at this binary's source code)
来源：https://stackoverflow.com/questions/11705906/programmatically-getting-the-mac-of-an-android-device