Android取得Mac地址及IP地址需要添加权限，只有连接成功才能取得

Android需要添加权限以获得Mac地址和IP地址，

在AndroidManifest.xml中：

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

1、获取手机的Mac地址，即使未打开Wifi或未连接Wi-Fi也可以获取手机的Mac地址。代码如下：

public static String getMacAddress(Context context) {
    String macAddress = null;
    WifiInfo wifiInfo = getWifiInfo(context);
    if (wifiInfo != null) {
        macAddress = wifiInfo.getMacAddress();
    }
    return macAddress;
}

2、获取手机IP地址，只有在Wifi连接的情况下才能获取IP地址，否则为0，对应的转换IP为0.0.0.0，其中getIpAddress （）获取IP地址，它是一个整数，需要转换为IP地址。代码如下：

public static String getIpAddress(Context context) {
    String IpAddress = null;
    WifiInfo wifiInfo = getWifiInfo(context);
    if (wifiInfo != null) {
        IpAddress = intToIpAddress(wifiInfo.getIpAddress());
    }
    return IpAddress;
}
public static String intToIpAddress(long ipInt) {
    StringBuffer sb = new StringBuffer();
    sb.append(ipInt & 0xFF).append(".");
    sb.append((ipInt >> 8) & 0xFF).append(".");
    sb.append((ipInt >> 16) & 0xFF).append(".");
    sb.append((ipInt >> 24) & 0xFF);
    return sb.toString();
}

3、获取路由器的Mac地址，仅当连接成功（废话……）时，代码如下：

public static String getConnectedWifiMacAddress(Context context) {
    String connectedWifiMacAddress = null;
    WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    List wifiList;
    if (wifiManager != null) {
        wifiList = wifiManager.getScanResults();
        WifiInfo info = wifiManager.getConnectionInfo();
        if (wifiList != null && info != null) {
            for (int i = 0; i < wifilist.size();="" i++)="" {="" scanresult="" result="">get(i);
                if (info.getBSSID().equals(result.BSSID)) {
                    connectedWifiMacAddress = result.BSSID;
                }
            }
        }
    }
    return connectedWifiMacAddress;
}

获取Mac和IP地址的完整工具代码如下：

package com.cpxiao.wifimacdemo;
import android.content.Context;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import java.util.List;
/**
 * Created by cpxiao on 15/9/21.
 */
public class MacAddressUtils {
    /**
     * 获取手机的Mac地址，在Wifi未开启或者未连接的情况下也能获取手机Mac地址
     */
    public static String getMacAddress(Context context) {
        String macAddress = null;
        WifiInfo wifiInfo = getWifiInfo(context);
        if (wifiInfo != null) {
            macAddress = wifiInfo.getMacAddress();
        }
        return macAddress;
    }
    /**
     * 获取手机的Ip地址
     */
    public static String getIpAddress(Context context) {
        String IpAddress = null;
        WifiInfo wifiInfo = getWifiInfo(context);
        if (wifiInfo != null) {
            IpAddress = intToIpAddress(wifiInfo.getIpAddress());
        }
        return IpAddress;
    }
    /**
     * 获取WifiInfo
     */
    public static WifiInfo getWifiInfo(Context context) {
        WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
        WifiInfo info = null;
        if (null != wifiManager) {
            info = wifiManager.getConnectionInfo();
        }
        return info;
    }
    public static long ipAddressToint(String ip) {
        String[] items = ip.split("\\.");
        return Long.valueOf(items[0]) <>24
                | Long.valueOf(items[1]) <>16
                | Long.valueOf(items[2]) <>8
                | Long.valueOf(items[3]);
    }
    public static String intToIpAddress(long ipInt) {
        StringBuffer sb = new StringBuffer();
        sb.append(ipInt & 0xFF).append(".");
        sb.append((ipInt >> 8) & 0xFF).append(".");
        sb.append((ipInt >> 16) & 0xFF).append(".");
        sb.append((ipInt >> 24) & 0xFF);
        return sb.toString();
    }
    /**
     * 获取当前可连接Wifi列表
     */
    public static List getAvailableNetworks(Context context) {
        WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
        List wifiList = null;
        if (wifiManager != null) {
            wifiList = wifiManager.getScanResults();
        }
        return wifiList;
    }
    /**
     * 获取已连接的Wifi路由器的Mac地址
     */
    public static String getConnectedWifiMacAddress(Context context) {
        String connectedWifiMacAddress = null;
        WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
        List wifiList;
        if (wifiManager != null) {
            wifiList = wifiManager.getScanResults();
            WifiInfo info = wifiManager.getConnectionInfo();
            if (wifiList != null && info != null) {
                for (int i = 0; i < wifilist.size();="" i++)="" {="" scanresult="" result="wifiList.get(i);">if (info.getBSSID().equals(result.BSSID)) {
                        connectedWifiMacAddress = result.BSSID;
                    }
                }
            }
        }
        return connectedWifiMacAddress;
    }
}

参考：

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