获取通过以太网连接的Android DhcpInfo

Question

如何获取通过以太网连接的android设备的DhcpInfo（）（网关ip，网络掩码，dns等）？

我知道如何得到它，如果通过Wifi连接的设备和使用ACCESS_WIFI_STATE权限：

WifiManager wifi = (WifiManager) context.getSystemService(Service.WIFI_SERVICE); 
DhcpInfo dhcp = wifi.getDhcpInfo(); 

但我仍然没有找到得到它的方式，如果通过以太网连接的设备... 感谢

Answer 1

在你的AndroidManifest.xml 文件

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

您的代码：

ConnectivityManager connectivityManager = (ConnectivityManager) getApplicationContext().getSystemService(Service.CONNECTIVITY_SERVICE); 

       /* you can print your active network via using below */ 
       Log.i("myNetworkType: ", connectivityManager.getActiveNetworkInfo().getTypeName()); 
       WifiManager wifiManager= (WifiManager) getApplicationContext().getSystemService(getApplicationContext().WIFI_SERVICE); 


       Log.i("routes ", connectivityManager.getLinkProperties(connectivityManager.getActiveNetwork()).getRoutes().toString()); 
       Log.i("domains ", connectivityManager.getLinkProperties(connectivityManager.getActiveNetwork()).getDomains().toString()); 
       Log.i("ip address ", connectivityManager.getLinkProperties(connectivityManager.getActiveNetwork()).getLinkAddresses().toString()); 
       Log.i("dns address ", connectivityManager.getLinkProperties(connectivityManager.getActiveNetwork()).getDnsServers().toString()); 



       if(connectivityManager.getActiveNetworkInfo().getType() == ConnectivityManager.TYPE_WIFI) { 
        Log.i("myType ", "wifi"); 
        DhcpInfo d =wifiManager.getDhcpInfo(); 
        Log.i("info", d.toString()+""); 
       } 
       else if(connectivityManager.getActiveNetworkInfo().getType() == ConnectivityManager.TYPE_ETHERNET) { 
/* there is no EthernetManager class, there is only WifiManager. so, I used this below trick to get my IP range, dns, gateway address etc */ 

        Log.i("myType ", "Ethernet"); 
        Log.i("routes ", connectivityManager.getLinkProperties(connectivityManager.getActiveNetwork()).getRoutes().toString()); 
        Log.i("domains ", connectivityManager.getLinkProperties(connectivityManager.getActiveNetwork()).getDomains().toString()); 
        Log.i("ip address ", connectivityManager.getLinkProperties(connectivityManager.getActiveNetwork()).getLinkAddresses().toString()); 
        Log.i("dns address ", connectivityManager.getLinkProperties(connectivityManager.getActiveNetwork()).getDnsServers().toString()); 

       } 
       else { 

       } 

输出

不能达到知道你是否是通过WiFi或网络使用WifiManager为WifiManager只带wifi连接交易。您必须使用ConnectivityManager。我再次更新了代码WifiManager和ConnectivityManager以生成您想要的结果。