uu-android/WeiChat/src/main/java/com/xzjmyk/pm/activity/util/MacAndIDUtil.java

package com.xzjmyk.pm.activity.util;

import android.content.Context;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;

import com.xzjmyk.pm.activity.ui.erp.util.CommonUtil;
import com.xzjmyk.pm.activity.ui.erp.util.StringUtils;

import java.io.FileInputStream;

/**
 * Created by pengminggong on 2016/10/31.
 */

public class MacAndIDUtil {

    public String getMac(Context ct) {
        String mac = null;
        String macOld = CommonUtil.getSharedPreferences(ct, "macaddress");
        if (StringUtils.isEmpty(macOld)) {
            mac = getLocalMacAddress();
            if (StringUtils.isEmpty(mac))
                mac = getMacFromWifiInfo(ct);
            boolean isOk = legitimateMac(mac);//判断mac地址是否合法
            if (isOk) {
                CommonUtil.setSharedPreferences(ct, "macaddress", mac);
            } else {
                tryOpenWifi(ct);
                mac = "";
            }
        } else {
            mac = macOld;
        }

        return mac;
    }


    private boolean legitimateMac(String mac) {
        return !StringUtils.isEmpty(mac) && !mac.contains("00:00:00");
    }

    /*通过wifiInfo获取ip*/
    private String getIpFromWifiInfo(Context ct) {
        WifiInfo info = getWifiInfo(ct);
        if (null != info)
            return int2ip(info.getIpAddress());
        else
            return null;
    }

    /*通过wifiInfo获取mac*/
    private String getMacFromWifiInfo(Context ct) {
        //在wifi未开启状态下，仍然可以获取MAC地址，但是IP地址必须在已连接状态下否则为0
        WifiInfo info = getWifiInfo(ct);
        if (null != info) {
            return info.getMacAddress();
        } else
            return null;
    }

    /*获取wifiInfo*/
    private WifiInfo getWifiInfo(Context ct) {
        WifiManager wifiMgr = (WifiManager) ct.getSystemService(Context.WIFI_SERVICE);
        if (wifiMgr == null) {
            return null;
        }
        return wifiMgr.getConnectionInfo();
    }

    /*将地址整形转化为字符串*/
    public static String int2ip(long ipInt) {
        StringBuilder sb = new StringBuilder();
        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
    private String getLocalMacAddress() {
        String mac = null;
        try {
            String path = "sys/class/net/eth0/address";
            FileInputStream fis_name = new FileInputStream(path);
            byte[] buffer_name = new byte[8192];
            int byteCount_name = fis_name.read(buffer_name);
            if (byteCount_name > 0) {
                mac = new String(buffer_name, 0, byteCount_name, "utf-8");
            }


            if (mac == null) {
                fis_name.close();
                return "";
            }
            fis_name.close();
        } catch (Exception io) {
            String path = "sys/class/net/wlan0/address";
            FileInputStream fis_name;
            try {
                fis_name = new FileInputStream(path);
                byte[] buffer_name = new byte[8192];
                int byteCount_name = fis_name.read(buffer_name);
                if (byteCount_name > 0) {
                    mac = new String(buffer_name, 0, byteCount_name, "utf-8");
                }
                fis_name.close();
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
        if (mac == null) {
            return "";
        } else {
            return mac.trim();
        }

    }

    private boolean tryOpenWifi(Context ct) {
        boolean softOpenWifi = false;
        WifiManager manager = (WifiManager) ct.getSystemService(Context.WIFI_SERVICE);
        int state = manager.getWifiState();
        if (state != WifiManager.WIFI_STATE_ENABLED && state != WifiManager.WIFI_STATE_ENABLING) {
            manager.setWifiEnabled(true);
            softOpenWifi = true;
        }
        return softOpenWifi;
    }
}