Android：获取MAC ＜ 安卓系统11 ＜= 获取UUID

1.核心代码 

主要的UseMac.java

import android.annotation.SuppressLint;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.os.Environment;
import android.util.Log;import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.net.NetworkInterface;
import java.util.Collections;
import java.util.List;
import java.util.UUID;public class UseMac {public static final String main(Context context) {//R对应安卓11  -->30if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {//这里做你想做的事String uuid = "";try {uuid = readKey();} catch (IOException e) {e.printStackTrace();}return uuid;}else {return TVMac(context);}}private static String TVMac(Context context){int networkType;final ConnectivityManager connectivityManager= (ConnectivityManager)context.getSystemService(context.CONNECTIVITY_SERVICE);@SuppressLint("MissingPermission") final NetworkInfo networkInfo=connectivityManager.getActiveNetworkInfo();networkType=networkInfo.getType();Log.d("获取当前数据", "network type:"+networkType);if(networkType == ConnectivityManager.TYPE_WIFI){return getMac_wlan0();}else if((networkType == ConnectivityManager.TYPE_ETHERNET)){return getMac_eth0();}else{return getMac_wlan0();}}//====11-----Gpublic static String Android11Mac(Context context){// 使用WifiManager获取Mac地址WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);WifiInfo wifiInfo = null;if (wifiManager != null) {wifiInfo = wifiManager.getConnectionInfo();}// 获取Mac地址String macAddress = null;if (wifiInfo != null) {macAddress = wifiInfo.getMacAddress();Log.e("macAddress","====>>"+macAddress);}return macAddress;}public static String getUUID() {return UUID.randomUUID().toString().replaceAll("-", "");}private static String uuidfileName = "myuuid.txt";public static void saveBitmap() throws IOException {// 创建目录//获取内部存储状态String state = Environment.getExternalStorageState();//如果状态不是mounted，无法读写if (!state.equals(Environment.MEDIA_MOUNTED)) {return;}String sdCardDir = Environment.getExternalStorageDirectory().getAbsolutePath();File appDir = new File(sdCardDir, "CaChe");if (!appDir.exists()) {appDir.mkdir();}String fileName = uuidfileName;//这里是创建一个TXT文件保存我们的UUIDFile file = new File(appDir, fileName);if (!file.exists()) {file.createNewFile();}//保存android唯一表示符try {FileWriter fw = new FileWriter(file);fw.write(getUUID());fw.flush();fw.close();} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}public static String readKey() throws IOException {// 创建目录//获取内部存储状态String state = Environment.getExternalStorageState();//如果状态不是mounted，无法读写if (!state.equals(Environment.MEDIA_MOUNTED)) {return null;}String sdCardDir = Environment.getExternalStorageDirectory().getAbsolutePath();File appDir = new File(sdCardDir, "CaChe");if (!appDir.exists()) {appDir.mkdir();}String fileName = uuidfileName;//这里是进行读取我们保存文件的名称File file = new File(appDir, fileName);if (!file.exists()) {file.createNewFile();}BufferedReader reader = null;StringBuilder content=null;try {FileReader fr = new FileReader(file);content= new StringBuilder();reader = new BufferedReader(fr);String line;while ((line= reader.readLine())!=null){content.append(line);}} catch (Exception e) {e.printStackTrace();}finally {if (reader!=null){try {reader.close();}catch (IOException e){e.printStackTrace();}}}return content.toString();}public static final String getNetName(Context context) {int networkType;final ConnectivityManager connectivityManager= (ConnectivityManager)context.getSystemService(context.CONNECTIVITY_SERVICE);@SuppressLint("MissingPermission") final NetworkInfo networkInfo=connectivityManager.getActiveNetworkInfo();networkType=networkInfo.getType();Log.d("获取当前数据", "network type:"+networkType);if(networkType == ConnectivityManager.TYPE_WIFI){return "WIFI";}else if((networkType == ConnectivityManager.TYPE_ETHERNET)){return "有线";}else{return "WIFI";}}//获取无线mac地址public static final String getMac_wlan0() {try {List<NetworkInterface> all = Collections.list(NetworkInterface.getNetworkInterfaces());for (NetworkInterface nif : all) {if (!"wlan0".equalsIgnoreCase(nif.getName())) {continue;}byte[] macBytes = nif.getHardwareAddress();if (macBytes == null || macBytes.length == 0) {continue;}StringBuilder result = new StringBuilder();for (byte b : macBytes) {result.append(String.format("%02X", b));}String s1 = result.toString().toUpperCase().replaceAll ("(.{2})", "$1:");//加入：return s1.substring(0,s1.length()-1);}} catch (Exception x) {x.printStackTrace();}return "";}//获取有线mac地址public static String getMac_eth0() {try {List<NetworkInterface> all = Collections.list(NetworkInterface.getNetworkInterfaces());for (NetworkInterface nif : all) {if (!"eth0".equalsIgnoreCase(nif.getName())) {continue;}byte[] macBytes = nif.getHardwareAddress();if (macBytes == null || macBytes.length == 0) {continue;}StringBuilder result = new StringBuilder();for (byte b : macBytes) {result.append(String.format("%02X", b));}String s1 = result.toString().toUpperCase().replaceAll ("(.{2})", "$1:");//加入：return s1.substring(0,s1.length()-1);}} catch (Exception x) {x.printStackTrace();}return "";}}

下面说一下使用

2.获取mac

2.1.修改

主要是在 下面这个方法注释掉的是获取mac的，适合安卓11以下

    public static final String main(Context context) {return TVMac(context);}

2.2.使用

把main方法的uuid部分注释掉

UseMac.main(activity)

3.获取uuid

这边有一个类，会主动给你申请权限

import android.app.Activity;
import android.content.pm.PackageManager;
import android.util.Log;import androidx.core.app.ActivityCompat;import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.RandomAccessFile;public class FileOper {private static final int REQUEST_EXTERNAL_STORAGE = 1;private static String[] PERMISSIONS_STORAGE = {"android.permission.READ_EXTERNAL_STORAGE", "android.permission.WRITE_EXTERNAL_STORAGE"};private Activity activity;public FileOper(Activity activity) {this.activity =activity;try {//检测是否有写的权限int permission = ActivityCompat.checkSelfPermission(activity, "android.permission.WRITE_EXTERNAL_STORAGE");if (permission != PackageManager.PERMISSION_GRANTED) {// 没有写的权限，去申请写的权限，会弹出对话框ActivityCompat.requestPermissions(activity, PERMISSIONS_STORAGE, REQUEST_EXTERNAL_STORAGE);}} catch (Exception e) {e.printStackTrace();}}//flie：要删除的文件夹的所在位置public void deleteFile(File file) {Log.e("TestFile","清除一下视频缓存");if (file.isDirectory()) {File[] files = file.listFiles();for (int i = 0; i < files.length; i++) {File f = files[i];deleteFile(f);}// file.delete();//如要保留文件夹，只删除文件，请注释这行} else if (file.exists()) {file.delete();}}public void writeData(String url, String name, String content) {String filePath = url;String fileName = name + ".txt";writeTxtToFile(content, filePath, fileName);}// 将字符串写入到文本文件中private void writeTxtToFile(String strcontent, String filePath, String fileName) {//生成文件夹之后，再生成文件，不然会出错makeFilePath(filePath, fileName);String strFilePath = filePath + fileName;// 每次写入时，都换行写String strContent = strcontent + "\r\n";try {File file = new File(strFilePath);if (!file.exists()) {Log.d("TestFile", "Create the file:" + strFilePath);file.getParentFile().mkdirs();file.createNewFile();}RandomAccessFile raf = new RandomAccessFile(file, "rwd");raf.seek(file.length());raf.write(strContent.getBytes());raf.close();} catch (Exception e) {Log.e("TestFile", "Error on write File:" + e);}}//生成文件private File makeFilePath(String filePath, String fileName) {File file = null;makeRootDirectory(filePath);try {file = new File(filePath + fileName);if (!file.exists()) {file.createNewFile();}} catch (Exception e) {e.printStackTrace();}return file;}//判断文件是否存在public boolean fileIsExists(String strFile) {try {File f = new File(strFile);if (!f.exists()) {return false;}} catch (Exception e) {return false;}return true;}//生成文件夹public void makeRootDirectory(String filePath) {File file = null;try {file = new File(filePath);//不存在就新建if (!file.exists()) {file.mkdir();}} catch (Exception e) {Log.i("error:", e + "");}}//删除指定路径的文件public boolean deleteSingleFile(String filePath$Name) {File file = new File(filePath$Name);// 如果文件路径所对应的文件存在，并且是一个文件，则直接删除if (file.exists() && file.isFile()) {if (file.delete()) {Log.e("--Method--", "删除文件" + filePath$Name + "成功！");return true;} else {Log.e("--Method--", "删除文件" + filePath$Name + "失败！");return false;}} else {Log.e("--Method--", "文件" + filePath$Name + "不存在！");return true;}}/*** 读取本地文件*/public String readRate(String path) {StringBuilder stringBuilder = new StringBuilder();File file = new File(path);if (!file.exists()) {return "";}if (file.isDirectory()) {Log.e("TestFile", "The File doesn't not exist.");return "";} else {try {InputStream instream = new FileInputStream(file);if (instream != null) {InputStreamReader inputreader = new InputStreamReader(instream);BufferedReader buffreader = new BufferedReader(inputreader);String line;while ((line = buffreader.readLine()) != null) {stringBuilder.append(line);}instream.close();}} catch (java.io.FileNotFoundException e) {Log.e("TestFile", "The File doesn't not exist.");return "";} catch (IOException e) {Log.e("TestFile", e.getMessage());return "";}}return stringBuilder.toString();//对读到的设备ID解密}
}

        //读取uuidfileOper = new FileOper(this);try {if(fileOper.fileIsExists(Environment.getExternalStorageDirectory().getAbsolutePath()+uuidfileName)){UseMac.saveBitmap();}}catch(Exception e){System.out.println("base64Code:::"+e.toString());//出现异常的处理}

3.1.修改

    public static final String main(Context context) {//return TVMac(context);String uuid = "";try {uuid = readKey();} catch (IOException e) {e.printStackTrace();}return uuid;}