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

	/**	 * 通过wifiManager获取mac地址	 * @attention Wifi	 * @return Mac Address	 */	private static String getMacFromWifi(Context context){        WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);           if (!wifiManager.isWifiEnabled()) {           	wifiManager.setWifiEnabled(true);            }           WifiInfo wifiInfo = wifiManager.getConnectionInfo();               String mResult = wifiInfo.getMacAddress();        Log.i(TAG_NETWORK,"Mac address(wifi): "+mResult);        return mResult;	}

    //判断当前是否使用wifi连接    private static boolean isWifiConnected(Context context){    	ConnectivityManager cm;    	cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);    	boolean result = cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState() == NetworkInfo.State.CONNECTED ? true : false ;    	    	Log.i(TAG_NETWORK,"isWifiConnected: "+result);    	return result;    }

	/**	 * 通过callCmd("busybox ifconfig","HWaddr")获取mac地址	 * @attention 需要设备装有busybox工具	 * @return Mac Address	 */	private static String getMacFromCallCmd(){		String result = "";        result = callCmd("busybox ifconfig","HWaddr");                if(result == null || result.length() <= 0){        	Log.i(TAG_NETWORK,"callCmd returns null or empty");        	return null;        }                //对该行数据进行解析        //例如：eth0      Link encap:Ethernet  HWaddr 00:16:E8:3E:DF:67        if(result.length()>0 && result.contains("HWaddr")==true){        	String Mac = result.substring(result.indexOf("HWaddr")+6, result.length()-1);        	Log.i(TAG_NETWORK,"Mac:"+Mac+" Mac.length: "+Mac.length());          	if(Mac.length()>1){        		Mac = Mac.replaceAll(" ", "");        		result = "";        		        		String[] tmp = Mac.split(":");        		for(int i = 0;i<tmp.length;++i){        			result +=tmp[i];        		}        	}        	        	Log.i(TAG_NETWORK,result+" result.length: "+result.length());        }    	Log.i(TAG_NETWORK,"Mac address(CallCmd): "+result);        return result;	}

   public static String callCmd(String cmd,String filter) {           String result = "";           String line = "";           try {        	Process proc = Runtime.getRuntime().exec(cmd);            InputStreamReader is = new InputStreamReader(proc.getInputStream());               BufferedReader br = new BufferedReader (is);                           //执行命令cmd，只取结果中含有filter的这一行            while ((line = br.readLine ()) != null && line.contains(filter)== false) {               	//result += line;            	Log.i("test","line: "+line);            }                        result = line;            Log.i("test","result: "+result);        }           catch(Exception e) {               e.printStackTrace();           }           return result;       } 

   /**       * get the Mac Address from the file /proc/net/arp     * @param context     * @attention the file /proc/net/arp need exit 	 * @return Mac Address     */    private static String getMacFromFile(Context context){    	String mIP = Config.getIpAddress(context);    	if(mIP == null || mIP.length()<=0)    		return null;    	        List<String> mResult = readFileLines("/proc/net/arp");                Log.d(TAG_NETWORK,"=======  /proc/net/arp  =========");        for(int i =0;i<mResult.size();++i)        	Log.d("line",mResult.get(i));        Log.d(TAG_NETWORK,"===========================");                        if(mResult !=null && mResult.size()>1){        	        	for(int j =1;j<mResult.size();++j){        		List<String> mList = new ArrayList<String>();        		String[] mType = mResult.get(j).split(" ");        		for(int i =0;i<mType.length;++i){                	if(mType[i]!=null && mType[i].length()>0)                		mList.add(mType[i]);                }        		if(mList!=null && mList.size()>4 && mList.get(0).equalsIgnoreCase(mIP)){	                    String result="";	                    String[] tmp = mList.get(3).split(":");	            		for(int i = 0;i<tmp.length;++i){	            			result +=tmp[i];	            		}	            		result = result.toUpperCase();	            		Log.i(TAG_NETWORK,"Mac address(file): "+result);            		return result;        		}        	}        }    	return null;    }

	 /**     * 以行为单位读取文件，常用于读面向行的格式化文件     */    private static List<String> readFileLines(String fileName) {        File file = new File(fileName);        BufferedReader reader = null;        String tempString ="";        List<String> mResult = new ArrayList<String>();        try {        	Log.i("result","以行为单位读取文件内容，一次读一整行：");            reader = new BufferedReader(new FileReader(file));            while((tempString = reader.readLine())!=null){            	mResult.add(tempString);            }            reader.close();        } catch (IOException e) {            e.printStackTrace();        } finally {            if (reader != null) {                try {                    reader.close();                } catch (IOException e1) {                }            }        }                return mResult;    }