Android 获取设备唯一标识

Dear 丶 2022-02-25 18:09 322阅读 0赞

public class MainActivity extends AppCompatActivity {
    
        private static final String PERMISSION_READ_PHONE_STATE = "android.permission.READ_PHONE_STATE";
        private static final String LINE_SEPARATOR = System.getProperty("line.separator");
        private TextView textView;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            textView = findViewById(R.id.textview);
    
            StringBuilder sb = new StringBuilder();
            sb.append("TelephonyId");
            sb.append(LINE_SEPARATOR);
            sb.append(getTelephonyId());
            sb.append(LINE_SEPARATOR);
    
            sb.append("MacAddress");
            sb.append(LINE_SEPARATOR);
            sb.append(getMacAddress());
            sb.append(LINE_SEPARATOR);
    
            sb.append("AndroidId");
            sb.append(LINE_SEPARATOR);
            sb.append(getAndroidId());
    
            textView.setText(sb.toString());
        }
    
        private void randomTitle() {
            UUID uuid = UUID.randomUUID();
            getActionBar().setTitle(uuid.toString());
        }
    
        /**
         * 单卡工程中一个手机号对应一个IMEI号，双卡手机则会对应两个IMEI号
         */
        private String getTelephonyId() {
            TelephonyManager telephonyMgr = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
            if (PackageManager.PERMISSION_GRANTED == checkSelfPermission(PERMISSION_READ_PHONE_STATE)) {
                String imei = telephonyMgr.getImei();
                String simSerialNumber = telephonyMgr.getSimSerialNumber();
                return imei + LINE_SEPARATOR + simSerialNumber;
            }
            return null;
        }
    
        /**
         * Mac 指的就是我们设备网卡的唯一设别码，该码全球唯一，一般称为物理地址，硬件地址用来定义设备的位置
         */
        private String getMacAddress() {
            String macAddress = null;
            StringBuilder buf = new StringBuilder();
            NetworkInterface networkInterface = null;
            try {
                networkInterface = NetworkInterface.getByName("eth1");
                if (networkInterface == null) {
                    networkInterface = NetworkInterface.getByName("wlan0");
                }
                if (networkInterface == null) {
                    return "02:00:00:00:00:00";
                }
                byte[] addr = networkInterface.getHardwareAddress();
                for (byte b : addr) {
                    buf.append(String.format("%02X:", b));
                }
                if (buf.length() > 0) {
                    buf.deleteCharAt(buf.length() - 1);
                }
                macAddress = buf.toString();
            } catch (SocketException e) {
                e.printStackTrace();
                return "02:00:00:00:00:00";
            }
            return macAddress;
        }
    
        /**
         * 在设备首次运行的时候，系统会随机生成一64位的数字，并把这个数值以16进制保存下来，这个16进制的数字就是ANDROID_ID，但是如果手机恢复出厂设置这个值会发生改变。
         */
        private String getAndroidId() {
            return Settings.Secure.getString(getContentResolver(), Settings.Secure.ANDROID_ID);
        }
    }

当前测试手机：360N7 lite, Android 8.0  
应用分屏通过在 application 和 activiy 同时设置 android:resizeableActivity=“true” 来实现  
这说明可以通过 Imei 和 simSerialNumber 来实现判断是否双开，所以不要包有侥幸心里。  
![在这里插入图片描述][2019040214435895.png]

[2019040214435895.png]: /images/20220225/d6d8fad395c145248348257479dbb914.png