Android获取WiFi ip相关信息

private void getip(){    WifiManager wifiMgr = (WifiManager) getSystemService(Context.WIFI_SERVICE);    DhcpInfo dhcpInfo = wifiMgr.getDhcpInfo();    WifiInfo wifiInfo = wifiMgr.getConnectionInfo();    if (wifiInfo != null) {        Log.d(TAG,"wifi名称："+wifiInfo.getSSID().replace("\"", ""));//获取到的wifi名称带双引号，用replace去掉        Log.d(TAG,"wifi信号强度："+ wifiInfo.getRssi());    }    if (dhcpInfo != null) {        Log.d(TAG,"ip："+intToIp(dhcpInfo.ipAddress));        Log.d(TAG,"dns："+intToIp(dhcpInfo.dns1));        Log.d(TAG,"网关："+intToIp(dhcpInfo.gateway));//就是路由？    }    Log.d(TAG,"子网掩码："+getNetMask());//直接用dhcpInfo.netmask获取到的是0.0.0.0，貌似是api的bug}private String getNetMask() {    try {        Enumeration eni = NetworkInterface                .getNetworkInterfaces();        while (eni.hasMoreElements()) {            NetworkInterface networkCard = eni.nextElement();            List ncAddrList = networkCard                    .getInterfaceAddresses();            Iterator ncAddrIterator = ncAddrList.iterator();            while (ncAddrIterator.hasNext()) {                InterfaceAddress networkCardAddress = ncAddrIterator.next();                InetAddress address = networkCardAddress.getAddress();                if (!address.isLoopbackAddress()) {                    String hostAddress = address.getHostAddress();                    Log.d(TAG,"address        =   " + hostAddress);                    if (hostAddress.indexOf(":") > 0) {                        // case : ipv6                        continue;                    } else {                        // case : ipv4                        String maskAddress = calcMaskByPrefixLength(networkCardAddress.getNetworkPrefixLength());                        Log.d(TAG,"subnetmask = " + maskAddress);                        return maskAddress;                    }                }            }        }    } catch (Exception e) {        e.printStackTrace();        return "N/A";    }    return "N/A";}private String intToIp(int paramInt) {    return (paramInt & 0xFF) + "." + (0xFF & paramInt >> 8) + "." + (0xFF & paramInt >> 16) + "."            + (0xFF & paramInt >> 24);}
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