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 -->30
if (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-----G
public 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UUID
File 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 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 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uuid
fileOper = 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;
}3.2.使用
就比较简单了
在activity里面调用
//读取uuid
fileOper = 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
}