獲取通過以太網連接的Android DhcpInfo

Question

如何獲取通過以太網連接的android設備的DhcpInfo（）（網關ip，網絡掩碼，dns等）？

我知道如何得到它，如果通過Wifi連接的設備和使用ACCESS_WIFI_STATE權限：

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

但我仍然沒有找到得到它的方式，如果通過以太網連接的設備... 感謝

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" /> 

您的代碼：

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 { 

       } 

輸出

不能達到知道你是否是通過WiFi或網絡使用WifiManager爲WifiManager只帶wifi連接交易。您必須使用ConnectivityManager。我再次更新了代碼WifiManager和ConnectivityManager以生成您想要的結果。