如何在android设备中查找以太网连接的子网掩码、网关、DNS值?
我有,都是通过以太网连接的。现在,我可以获得设备的IP地址和mac地址,但我还需要获得子网掩码、网关、优先级-秒DNS值。请告诉我如何以编程方式查找这些值 查找Ip地址和mac地址的代码是-如何在android设备中查找以太网连接的子网掩码、网关、DNS值?,android,dns,ethernet,gateway,subnet,Android,Dns,Ethernet,Gateway,Subnet,我有,都是通过以太网连接的。现在,我可以获得设备的IP地址和mac地址,但我还需要获得子网掩码、网关、优先级-秒DNS值。请告诉我如何以编程方式查找这些值 查找Ip地址和mac地址的代码是- connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); networkInfo = connectivityManager.getActiveN
connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
networkInfo = connectivityManager.getActiveNetworkInfo();
networkType = networkInfo != null ? networkInfo.getTypeName() : "";
try {
for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements(); ) {
NetworkInterface intf = en.nextElement();
for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements(); ) {
InetAddress inetAddress = enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress()) {
ipAddress = inetAddress.getHostAddress().toString();
System.out.println("ipaddress=" + ipAddress + " formatter ip" + Formatter.formatIpAddress(inetAddress.hashCode()));
}
}
}
} catch (SocketException ex) {
}
try {
String interfaceName = "wlan0";
if (networkType.equals("ETHERNET")) {
interfaceName = "eth0";
}
List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
for (NetworkInterface intf : interfaces) {
if (!intf.getName().equalsIgnoreCase(interfaceName)) {
continue;
}
byte[] mac = intf.getHardwareAddress();
if (mac == null) {
continue;
}
StringBuilder buf = new StringBuilder();
for (byte aMac : mac) {
buf.append(String.format("%02X:", aMac));
}
if (buf.length() > 0) {
buf.deleteCharAt(buf.length() - 1);
}
macaddress = buf.toString();
}
} catch (Exception ex) {
ex.printStackTrace();
}
connectivityManager=(connectivityManager)context.getSystemService(context.CONNECTIVITY_服务);
networkInfo=connectivityManager.getActiveNetworkInfo();
网络类型=网络信息!=无效的networkInfo.getTypeName():“”;
试一试{
对于(枚举en=NetworkInterface.getNetworkInterfaces();en.hasMoreElements();){
NetworkInterface intf=en.nextElement();
对于(枚举Enumeration EnumipAddress=intf.getInetAddresses();EnumipAddress.hasMoreElements();){
InetAddress InetAddress=enumIpAddr.nextElement();
如果(!inetAddress.isLoopbackAddress()){
ipAddress=inetAddress.getHostAddress().toString();
System.out.println(“ipaddress=“+ipaddress+”格式化程序ip“+formatter.FormattIPAddress(inetAddress.hashCode()));
}
}
}
}捕获(SocketException例外){
}
试一试{
字符串interfaceName=“wlan0”;
if(networkType.equals(“以太网”)){
interfaceName=“eth0”;
}
List interfaces=Collections.List(NetworkInterface.getNetworkInterfaces());
用于(网络接口intf:接口){
如果(!intf.getName().equalsIgnoreCase(interfaceName)){
继续;
}
字节[]mac=intf.getHardwareAddress();
如果(mac==null){
继续;
}
StringBuilder buf=新的StringBuilder();
for(字节aMac:mac){
追加(String.format(“%02X:”,aMac));
}
如果(buf.length()>0){
buf.deleteCharAt(buf.length()-1);
}
macaddress=buf.toString();
}
}捕获(例外情况除外){
例如printStackTrace();
}
下面的2个问题可能和你们无关,但我已经记在心里了,所以请任何人解释一下,我会很感激的
1) 如果我同时具有连接WIFI和以太网连接,那么如何识别我的应用程序从哪个连接连接到服务器(除了我使用的网络类型代码之外)
2) WiFi和以太网是否都可以连接到设备中,并且我可以从两种网络类型中获取mac地址、IP地址和所有其他值?我已经从WiFi网络获取子网和网关,在我的问题中,我从以太网询问。您找到了解决方案吗?
private static String intToIP(int ipAddress) {
String ret = String.format("%d.%d.%d.%d", (ipAddress & 0xff),
(ipAddress >> 8 & 0xff), (ipAddress >> 16 & 0xff),
(ipAddress >> 24 & 0xff));
return ret;
}
public String GetSubnetMask_WIFI() {
// wifii= (WifiManager)
getCurrentActivity().getApplicationContext().getSystemService(Context.WIFI_SERVICE);
WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
DhcpInfo dhcp = wifiManager.getDhcpInfo();
String mask = intToIP(dhcp.netmask);
return mask;
}