android获取wifi的IP,子网掩码,网关,dns等信息
public class MainActivity extends Activity { private WifiManager my_wifiManager; private WifiInfo wifiInfo; private DhcpInfo dhcpInfo; private TextView tvResult; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); my_wifiManager = ((WifiManager) getSystemService("wifi")); dhcpInfo = my_wifiManager.getDhcpInfo(); wifiInfo = my_wifiManager.getConnectionInfo(); tvResult = (TextView) findViewById(R.id.tvResult); } @Override protected void onResume() { super.onResume(); StringBuilder sb = new StringBuilder(); sb.append("网络信息:"); sb.append("\nipAddress:" + intToIp(dhcpInfo.ipAddress)); sb.append("\nnetmask:" + intToIp(dhcpInfo.netmask)); sb.append("\ngateway:" + intToIp(dhcpInfo.gateway)); sb.append("\nserverAddress:" + intToIp(dhcpInfo.serverAddress)); sb.append("\ndns1:" + intToIp(dhcpInfo.dns1)); sb.append("\ndns2:" + intToIp(dhcpInfo.dns2)); sb.append("\n"); System.out.println(intToIp(dhcpInfo.ipAddress)); System.out.println(intToIp(dhcpInfo.netmask)); System.out.println(intToIp(dhcpInfo.gateway)); System.out.println(intToIp(dhcpInfo.serverAddress)); System.out.println(intToIp(dhcpInfo.dns1)); System.out.println(intToIp(dhcpInfo.dns2)); System.out.println(dhcpInfo.leaseDuration); sb.append("Wifi信息:"); sb.append("\nIpAddress:" + intToIp(wifiInfo.getIpAddress())); sb.append("\nMacAddress:" + wifiInfo.getMacAddress()); tvResult.setText(sb.toString()); } private String intToIp(int paramInt) { return (paramInt & 0xFF) + "." + (0xFF & paramInt >> 8) + "." + (0xFF & paramInt >> 16) + "." + (0xFF & paramInt >> 24); } }
效果如下:
备注:
android.net.NetworkUtils
/** * Convert a IPv4 address from an integer to an InetAddress. * @param hostAddress an int corresponding to the IPv4 address in network byte order */ public static InetAddress intToInetAddress(int hostAddress) { byte[] addressBytes = { (byte)(0xff & hostAddress), (byte)(0xff & (hostAddress >> 8)), (byte)(0xff & (hostAddress >> 16)), (byte)(0xff & (hostAddress >> 24)) }; try { return InetAddress.getByAddress(addressBytes); } catch (UnknownHostException e) { throw new AssertionError(); } }
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