Android获取Mac地址

2023-09-16 15:32| 来源: 网络整理| 查看: 265

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

/** * 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; }

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