프로그래밍 방식으로 Android 기기의 MAC 가져 오기

프로그래밍 방식으로 Android 기기의 MAC 가져 오기

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Java를 사용하여 Android 장치의 MAC 주소를 얻어야합니다. 온라인으로 검색했지만 유용한 정보를 찾지 못했습니다.

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주석에서 이미 지적했듯이 MAC 주소는 WifiManager 를 통해 수신 할 수 있습니다 .

WifiManager manager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
WifiInfo info = manager.getConnectionInfo();
String address = info.getMacAddress();

또한 적절한 권한을 추가하는 것을 잊지 마십시오. AndroidManifest.xml

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>

Android 6.0 변경 사항을 참조하십시오 .

사용자에게 더 나은 데이터 보호를 제공하기 위해 이번 릴리스부터 Android는 Wi-Fi 및 Bluetooth API를 사용하는 앱의 기기 로컬 하드웨어 식별자에 대한 프로그래밍 방식 액세스를 제거합니다. WifiInfo.getMacAddress () 및 BluetoothAdapter.getAddress () 메서드는 이제 상수 값 02 : 00 : 00 : 00 : 00 : 00을 반환합니다.

블루투스 및 Wi-Fi 검색을 통해 주변 외부 기기의 하드웨어 식별자에 액세스하려면 이제 앱에 ACCESS_FINE_LOCATION 또는 ACCESS_COARSE_LOCATION 권한이 있어야합니다.

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MAC 주소를 가져 오는 것은 WifiInfo.getMacAddress()Marshmallow 이상에서 작동하지 않으며 비활성화되었으며 상수 값을02:00:00:00:00:00 반환 합니다 .

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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";
}

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<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;
}

여기에 다른 사람이

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이 솔루션은 http://robinhenniges.com/en/android6-get-mac-address-programmatically 에서 설립 했으며 저에게 효과적입니다! 희망이 도움이됩니다!

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 "";
}

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마시멜로 작업

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 "";
    }
}

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Mac 주소를 얻을 수 있습니다.

WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
WifiInfo wInfo = wifiManager.getConnectionInfo();
String mac = wInfo.getMacAddress();

Menifest.xml에서 권한 설정

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>

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You can no longer get the hardware MAC address of a android device. WifiInfo.getMacAddress() and BluetoothAdapter.getAddress() methods will return 02:00:00:00:00:00. This restriction was introduced in Android 6.0.

But Rob Anderson found a solution which is working for < Marshmallow : https://stackoverflow.com/a/35830358

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Taken from the Android sources here. This is the actual code that shows your MAC ADDRESS in the system's settings app.

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);
}

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Using this simple method

WifiManager wm = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
            String WLANMAC = wm.getConnectionInfo().getMacAddress();

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I think I just found a way to read MAC addresses without LOCATION permission: Run ip link and parse its output. (you could probably do the similar by looking at this binary's source code)

참고URL : https://stackoverflow.com/questions/11705906/programmatically-getting-the-mac-of-an-android-device