我需要使用Java获取我的Android设备的MAC地址。我在网上搜索过，但是我找不到任何有用的东西。
正如评论中已经指出的那样，可以通过WifiManager接收MAC地址。
WifiManager manager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
WifiInfo info = manager.getConnectionInfo();
String address = info.getMacAddress();
另外，不要忘记在AndroidManifest.xml中添加适当的权限
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
为了向用户提供更好的数据保护，从此版本开始，Android删除了使用Wi-Fi和蓝牙API对应用程序的设备本地硬件标识符的编程访问。 WifiInfo.getMacAddress（）和BluetoothAdapter.getAddress（）方法现在返回一个常量值02：00：00：00：00：00。
要通过蓝牙和Wi-Fi扫描访问附近外部设备的硬件标识符，您的应用现在必须具有ACCESS_FINE_LOCATION或ACCESS_COARSE_LOCATION权限。
取自Android来源here。这是在系统设置应用程序中显示MAC地址的实际代码。
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);
}
我想我刚刚找到了一种在没有LOCATION权限的情况下读取MAC地址的方法：运行ip addr并解析其输出。 （你可以通过查看这个二进制文件的源代码来做类似的事情）
使用这种简单的方法
WifiManager wm = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
String WLANMAC = wm.getConnectionInfo().getMacAddress();
通过WifiInfo.getMacAddress()获取MAC地址将不适用于Marshmallow及以上，它已被禁用并将返回the constant value of 02:00:00:00:00:00。
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";
}
<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;
}
有其他方式here
我从http://robinhenniges.com/en/android6-get-mac-address-programmatically创建了这个解决方案，它正在为我工作！希望有帮助！
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 "";
}
它与棉花糖一起工作
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 "";
}
}
我自己测试了这个代码，无论什么可用，它都会为你提供WiFi或以太网mac地址。
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) + ":");
}
StringBuilder sb = new StringBuilder();
for (int i = 0; i < macBytes.length; i++) {
sb.append(String.format("%02X%s", macBytes[i], (i < macBytes.length - 1) ? "-" : ""));
}
if (res1.length() > 0) {
res1.deleteCharAt(res1.length() - 1);
}
return res1.toString();
}
} catch (Exception ex) {
//handle exception
}
return getMacAddress();
}
public static String loadFileAsString(String filePath) throws java.io.IOException{
StringBuffer data = 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);
data.append(readData);
}
reader.close();
return data.toString();
}
public static String getMacAddress(){
try {
return loadFileAsString("/sys/class/net/eth0/address")
.toUpperCase().substring(0, 17);
} catch (IOException e) {
e.printStackTrace();
return "02:00:00:00:00:00";
}
}
你可以得到mac地址：
WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
WifiInfo wInfo = wifiManager.getConnectionInfo();
String mac = wInfo.getMacAddress();
在Manifest.xml中设置权限
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>
您无法再获取Android设备的硬件MAC地址。 WifiInfo.getMacAddress（）和BluetoothAdapter.getAddress（）方法将返回02：00：00：00：00：00。此限制是在Android 6.0中引入的。
但Rob Anderson找到了一个适用于<Marshmallow：https://stackoverflow.com/a/35830358的解决方案