我试图在android中获取IP地址，但结果是这样的！ 我想得到我的wifi范围的IP地址！我怎么能这样做？
private String getLocalIpAddress() {
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())
{
return inetAddress.getHostAddress().toString();
}
}
}
} catch (SocketException ex) {
Log.e("ServerActivity", ex.toString());
}
return null;
}
结果是这样的：fe80 :: 38aa：3cff：feb3：1cef％p2p0 我也在android mainfast中添加权限：
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
答案 0 :(得分：0)
我用这个
try{
WifiManager wm = (WifiManager) getSystemService(WIFI_SERVICE);
int ipAddress = wm.getDhcpInfo().ipAddress;
byte[] ipAddressbyte = BigInteger.valueOf(ipAddress).toByteArray();
for(int i = 0; i < ipAddressbyte.length / 2; i++){
int temp = ipAddressbyte[i];
ipAddressbyte[i] = ipAddressbyte[ipAddressbyte.length - i - 1];
ipAddressbyte[ipAddressbyte.length - i - 1] = (byte) temp;
}
InetAddress myaddr = InetAddress.getByAddress(ipAddressbyte);
String hostaddr = myaddr.getHostAddress(); // numeric representation (such as "127.0.0.1")
Log.d("INET",hostaddr);
}catch (Exception e){
Log.d("Exception",e.getMessage());
}
答案 1 :(得分：0)
Here You Will get All Details of Your Device !!!
//Main Classs
package com.example.devicedetail;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.telephony.TelephonyManager;
import android.view.Menu;
public class Device extends Activity {
@SuppressLint("NewApi")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_device);
String debug2 = System.getProperty("os.version");
String debug3 = android.os.Build.VERSION.RELEASE;
String debug4 = android.os.Build.DEVICE;
String debug5 = android.os.Build.MODEL;
String debug6 = android.os.Build.PRODUCT;
String debug7 = android.os.Build.BRAND;
String debug8 = android.os.Build.DISPLAY;
String debug9 = android.os.Build.CPU_ABI;
String debug10 = android.os.Build.CPU_ABI2;
String debug11 = android.os.Build.UNKNOWN;
String debug12 = android.os.Build.HARDWARE;
String debug13 = android.os.Build.ID;
String debug14 = android.os.Build.MANUFACTURER;
String debug15 = android.os.Build.SERIAL;
String debug16 = android.os.Build.USER;
String debug17 = android.os.Build.HOST;
TelephonyManager telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
String imei = telephonyManager.getDeviceId();
String macwlan = Utils.getMACAddress("wlan0");
String macethr = Utils.getMACAddress("eth0");
String ip4 = Utils.getIPAddress(true); // IPv4
String ip36 = Utils.getIPAddress(true); // IPv6
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_device, menu);
return true;
}
}
----------
//Util Class
package com.example.devicedetail;
import android.annotation.SuppressLint;
import java.io.*;
import java.net.*;
import java.util.*;
import org.apache.http.conn.util.InetAddressUtils;
public class Utils {
/**
* Convert byte array to hex string
* @param bytes
* @return
*/
public static String bytesToHex(byte[] bytes) {
StringBuilder sbuf = new StringBuilder();
for(int idx=0; idx < bytes.length; idx++) {
int intVal = bytes[idx] & 0xff;
if (intVal < 0x10) sbuf.append("0");
sbuf.append(Integer.toHexString(intVal).toUpperCase());
}
return sbuf.toString();
}
/**
* Get utf8 byte array.
* @param str
* @return array of NULL if error was found
*/
public static byte[] getUTF8Bytes(String str) {
try { return str.getBytes("UTF-8"); } catch (Exception ex) { return null; }
}
/**
* Load UTF8withBOM or any ansi text file.
* @param filename
* @return
* @throws java.io.IOException
*/
public static String loadFileAsString(String filename) throws java.io.IOException {
final int BUFLEN=1024;
BufferedInputStream is = new BufferedInputStream(new FileInputStream(filename), BUFLEN);
try {
ByteArrayOutputStream baos = new ByteArrayOutputStream(BUFLEN);
byte[] bytes = new byte[BUFLEN];
boolean isUTF8=false;
int read,count=0;
while((read=is.read(bytes)) != -1) {
if (count==0 && bytes[0]==(byte)0xEF && bytes[1]==(byte)0xBB && bytes[2]==(byte)0xBF ) {
isUTF8=true;
baos.write(bytes, 3, read-3); // drop UTF8 bom marker
} else {
baos.write(bytes, 0, read);
}
count+=read;
}
return isUTF8 ? new String(baos.toByteArray(), "UTF-8") : new String(baos.toByteArray());
} finally {
try{ is.close(); } catch(Exception ex){}
}
}
/**
* Returns MAC address of the given interface name.
* @param interfaceName eth0, wlan0 or NULL=use first interface
* @return mac address or empty string
*/
@SuppressLint("NewApi")
public static String getMACAddress(String interfaceName) {
try {
List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
for (NetworkInterface intf : interfaces) {
if (interfaceName != null) {
if (!intf.getName().equalsIgnoreCase(interfaceName)) continue;
}
byte[] mac = intf.getHardwareAddress();
if (mac==null) return "";
StringBuilder buf = new StringBuilder();
for (int idx=0; idx<mac.length; idx++)
buf.append(String.format("%02X:", mac[idx]));
if (buf.length()>0) buf.deleteCharAt(buf.length()-1);
return buf.toString();
}
} catch (Exception ex) { } // for now eat exceptions
return "";
/*try {
// this is so Linux hack
return loadFileAsString("/sys/class/net/" +interfaceName + "/address").toUpperCase().trim();
} catch (IOException ex) {
return null;
}*/
}
/**
* Get IP address from first non-localhost interface
* @param ipv4 true=return ipv4, false=return ipv6
* @return address or empty string
*/
public static String getIPAddress(boolean useIPv4) {
try {
List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
for (NetworkInterface intf : interfaces) {
List<InetAddress> addrs = Collections.list(intf.getInetAddresses());
for (InetAddress addr : addrs) {
if (!addr.isLoopbackAddress()) {
String sAddr = addr.getHostAddress().toUpperCase();
boolean isIPv4 = InetAddressUtils.isIPv4Address(sAddr);
if (useIPv4) {
if (isIPv4)
return sAddr;
} else {
if (!isIPv4) {
int delim = sAddr.indexOf('%'); // drop ip6 port suffix
return delim<0 ? sAddr : sAddr.substring(0, delim);
}
}
}
}
}
} catch (Exception ex) { } // for now eat exceptions
return "";
}
}
----------
//PerMissions
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
答案 2 :(得分：0)
答案没有错。如果您希望将其设为ipv6，则为ipv4地址。你可以试试
inetAddress.getLocalHost().getHostAddress();
答案 3 :(得分：0)
这是我通过点击在设备的IP之间进行更改的方式，您可能需要让它适合您的喜好。仅限本地IP，而非外部IP。
<uses-permission android:name="android.permission.INTERNET" />
private Enumeration<NetworkInterface> networkInterfaces = null;
private Enumeration<InetAddress> networkAddresses = null;
...
if(wb == this.ipDisplayButton)
{
try
{
while(true)
{
if(this.networkInterfaces == null)
{
networkInterfaces = NetworkInterface.getNetworkInterfaces();
}
if(networkAddresses == null || !networkAddresses.hasMoreElements())
{
if(networkInterfaces.hasMoreElements())
{
NetworkInterface networkInterface = networkInterfaces.nextElement();
networkAddresses = networkInterface.getInetAddresses();
}
else
{
networkInterfaces = null;
}
}
else
{
if(networkAddresses.hasMoreElements())
{
String address = networkAddresses.nextElement().getHostAddress();
if(address.contains(".")) //IPv4
{
ipDisplay.setText("IP Address: " + address);
}
break;
}
else
{
networkAddresses = null;
}
}
}
}
catch(SocketException e)
{
e.printStackTrace();
}
}