entityMap|blocks|key|9uk25|text|这是我读取IP和MAC地址的方法。纯java实现，但我在getMACAddress()它可以从特殊的Linux(Android)文件中读取值。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|8p02g|//+AndroidManifest.xml+permissions
<uses-permission+android:name="android.permission.INTERNET"+/>
<uses-permission+android:name="android.permission.ACCESS_NETWORK_STATE"+/>

//+test+functions
Utils.getMACAddress("wlan0");
Utils.getMACAddress("eth0");
Utils.getIPAddress(true);+//+IPv4
Utils.getIPAddress(false);+//+IPv6+|code-block|syntax|javascript|5i0l8|Utils.java|BOLD|fqh8s|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%2B%2B)+{
++++++++++++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%2B=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
+++++*/
++++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%2B%2B)
++++++++++++++++++++buf.append(String.format("%2502X:",+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/"+%2BinterfaceName+%2B+"/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();
++++++++++++++++++++++++//boolean+isIPv4+=+InetAddressUtils.isIPv4Address(sAddr);
++++++++++++++++++++++++boolean+isIPv4+=+sAddr.indexOf(':')<0;

++++++++++++++++++++++++if+(useIPv4)+{
++++++++++++++++++++++++++++if+(isIPv4)+
++++++++++++++++++++++++++++++++return+sAddr;
++++++++++++++++++++++++}+else+{
++++++++++++++++++++++++++++if+(!isIPv4)+{
++++++++++++++++++++++++++++++++int+delim+=+sAddr.indexOf('%25');+//+drop+ip6+zone+suffix
++++++++++++++++++++++++++++++++return+delim<0+?+sAddr.toUpperCase()+:+sAddr.substring(0,+delim).toUpperCase();
++++++++++++++++++++++++++++}
++++++++++++++++++++++++}
++++++++++++++++++++}
++++++++++++++++}
++++++++++++}
++++++++}+catch+(Exception+ex)+{+}+//+for+now+eat+exceptions
++++++++return+"";
++++}

}|3q7os^0|S|F|0|0|0|A|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|R|9|@$A|S|B|T|C|D]]|E|@]|F|$]]|$2|G|4|H|6|I|8|U|9|@]|E|@]|F|$J|K]]|$2|L|4|M|6|7|8|V|9|@$A|W|B|X|C|N]]|E|@]|F|$]]|$2|O|4|P|6|I|8|Y|9|@]|E|@]|F|$J|K]]|$2|Q|4|-4|6|7|8|Z|9|@]|E|@]|F|$]]]]

blocks|type|unstyled|text|这对我有用：|depth|inlineStyleRanges|entityRanges|code-block|WifiManager+wm+=+(WifiManager)+getSystemService(WIFI_SERVICE);
String+ip+=+Formatter.formatIpAddress(wm.getConnectionInfo().getIpAddress());|data|syntax|javascript|entityMap|mutability^0|0^^$0|@$1|2|3|4|5|F|6|@]|7|@]]|$1|8|3|9|5|G|6|@]|7|@]|A|$B|C]]]|D|$A|-4|E|-4|1|-4]]

blocks|type|unstyled|text|我使用了以下代码：我之所以使用hashCode是因为当我使用getHostAddress.但是hashCode对我来说工作得很好，因为我可以使用格式化程序获得具有正确格式的IP地址。|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|下面是示例输出：|1.使用getHostAddress******+IP=fe80::65ca:a13d:ea5a:233d%25rmnet_sdio0|2.使用hashCode和Formatter******+IP=238.194.77.212|正如你所看到的，第二种方法给出了我所需要的。|code-block|public+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())+{
++++++++++++++++++++String+ip+=+Formatter.formatIpAddress(inetAddress.hashCode());
++++++++++++++++++++Log.i(TAG,+"*****+IP="%2B+ip);
++++++++++++++++++++return+ip;
++++++++++++++++}
++++++++++++}
++++++++}
++++}+catch+(SocketException+ex)+{
++++++++Log.e(TAG,+ex.toString());
++++}
++++return+null;
}|data|syntax|javascript|entityMap|mutability^0|U|E|1B|8|0|0|4|E|J|1A|0|4|8|D|9|N|N|0|0^^$0|@$1|2|3|4|5|N|6|@$7|O|8|P|9|A]|$7|Q|8|R|9|A]]|B|@]]|$1|2|3|C|5|S|6|@]|B|@]]|$1|2|3|D|5|T|6|@$7|U|8|V|9|A]|$7|W|8|X|9|A]]|B|@]]|$1|2|3|E|5|Y|6|@$7|Z|8|10|9|A]|$7|11|8|12|9|A]|$7|13|8|14|9|A]]|B|@]]|$1|2|3|F|5|15|6|@]|B|@]]|$1|G|3|H|5|16|6|@]|B|@]|I|$J|K]]]|L|$I|-4|M|-4|1|-4]]

entityMap|blocks|key|dlhmp|text|这是我的方案|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5ubrd|WifiManager+wifiMan+=+(WifiManager)+context.getSystemService(Context.WIFI_SERVICE);
WifiInfo+wifiInf+=+wifiMan.getConnectionInfo();
int+ipAddress+=+wifiInf.getIpAddress();
String+ip+=+String.format("%25d.%25d.%25d.%25d",+(ipAddress+&+0xff),(ipAddress+>>+8+&+0xff),(ipAddress+>>+16+&+0xff),(ipAddress+>>+24+&+0xff));|code-block|syntax|javascript^0|0^^$0|$]|1|@$2|3|4|5|6|7|8|H|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|I|9|@]|A|@]|B|$F|G]]]]

blocks|type|code-block|text|public+static+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()+&&+inetAddress+instanceof+Inet4Address)+{
++++++++++++++++++++return+inetAddress.getHostAddress();
++++++++++++++++}
++++++++++++}
++++++++}
++++}+catch+(SocketException+ex)+{
++++++++ex.printStackTrace();
++++}
++++return+null;
}|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|unstyled|我增加了inetAddress例Inet4Address检查它是否是IPv+4地址。|offset|length|style|CODE|entityMap|mutability^0|0|4|B|G|C^^$0|@$1|2|3|4|5|J|6|@]|7|@]|8|$9|A]]|$1|B|3|C|5|K|6|@$D|L|E|M|F|G]|$D|N|E|O|F|G]]|7|@]]]|H|$8|-4|I|-4|1|-4]]

entityMap|blocks|key|40k5s|text|下面的代码可能对你有帮助。别忘了添加权限。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|8kc6b|public+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+(Exception+ex)+{
++++++++++Log.e("IP+Address",+ex.toString());
++++++}
++++++return+null;
}|code-block|syntax|javascript|20ab0|在manifest文件中添加下面的权限。|e9kls|+<uses-permission+android:name="android.permission.INTERNET"+/>
+<uses-permission+android:name="android.permission.ACCESS_NETWORK_STATE"+/>|duh9p|编码愉快！！^0|0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|N|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|O|9|@]|A|@]|B|$F|G]]|$2|H|4|I|6|7|8|P|9|@]|A|@]|B|$]]|$2|J|4|K|6|E|8|Q|9|@]|A|@]|B|$F|G]]|$2|L|4|M|6|7|8|R|9|@]|A|@]|B|$]]]]

entityMap|0|type|LINK|mutability|MUTABLE|data|url|http://www.ip-api.com/json|1|http://www.telize.com/geoip|2|http://www.itcuties.com/java/read-url-to-string/|3|https://stackoverflow.com/a/18998203/1987258|blocks|key|a0lot|text|你不需要添加权限，你可以下载次网站为字符串：|unstyled|depth|inlineStyleRanges|entityRanges|4cu0q|http：//www.ip-api.com/json|offset|length|cioiq|或|cn1o8|http：//www.telize.com/Geoip|bdrb5|可以使用java代码以字符串的形式下载网站：|mcj1|http：//www.itcuties.com/java/read-url-to-string/|7nd8d|像这样解析JSON对象：|9ddpm|https：//stackoverflow.com/a/18998203/1987258|7i8sn|json的属性“query”或“IP”包含IP地址。^0|0|0|Q|0|0|0|0|R|1|0|0|0|1C|2|0|0|0|18|3|0^^$0|$1|$2|3|4|5|6|$7|8]]|9|$2|3|4|5|6|$7|A]]|B|$2|3|4|5|6|$7|C]]|D|$2|3|4|5|6|$7|E]]]|F|@$G|H|I|J|2|K|L|16|M|@]|N|@]|6|$]]|$G|O|I|P|2|K|L|17|M|@]|N|@$Q|18|R|19|G|1A]]|6|$]]|$G|S|I|T|2|K|L|1B|M|@]|N|@]|6|$]]|$G|U|I|V|2|K|L|1C|M|@]|N|@$Q|1D|R|1E|G|1F]]|6|$]]|$G|W|I|X|2|K|L|1G|M|@]|N|@]|6|$]]|$G|Y|I|Z|2|K|L|1H|M|@]|N|@$Q|1I|R|1J|G|1K]]|6|$]]|$G|10|I|11|2|K|L|1L|M|@]|N|@]|6|$]]|$G|12|I|13|2|K|L|1M|M|@]|N|@$Q|1N|R|1O|G|1P]]|6|$]]|$G|14|I|15|2|K|L|1Q|M|@]|N|@]|6|$]]]]

blocks|type|code-block|text|private+InetAddress+getLocalAddress()throws+IOException+{

++++++++++++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();
++++++++++++++++++++++++++++return+inetAddress;
++++++++++++++++++++++++}
++++++++++++++++++++}
++++++++++++++++}
++++++++++++}+catch+(SocketException+ex)+{
++++++++++++++++Log.e("SALMAN",+ex.toString());
++++++++++++}
++++++++++++return+null;
++++++++}|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|entityMap|mutability^0^^$0|@$1|2|3|4|5|D|6|@]|7|@]|8|$9|A]]]|B|$8|-4|C|-4|1|-4]]

blocks|type|unstyled|text|如果你有一个shell，则ifconfig+eth0也适用于x86设备。|depth|inlineStyleRanges|entityRanges|entityMap|data|mutability^0^^$0|@$1|2|3|4|5|B|6|@]|7|@]]]|8|$9|-4|A|-4|1|-4]]

entityMap|blocks|key|2i6lp|text|最近，尽管与网络断开了连接(没有服务指示符)仍可以用getLocalIpAddress()获取ip地址。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|d6sve|我已经通过添加以下代码实现了一个解决方案：|djcm3|ConnectivityManager+cm+=+getConnectivityManager();
NetworkInfo+net+=+cm.getActiveNetworkInfo();
if+((null+==+net)+%7C%7C+!net.isConnectedOrConnecting())+{
++++return+null;
}|code-block|syntax|javascript|94o9k^0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|K|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|L|9|@]|A|@]|B|$]]|$2|E|4|F|6|G|8|M|9|@]|A|@]|B|$H|I]]|$2|J|4|-4|6|7|8|N|9|@]|A|@]|B|$]]]]

问如何利用代码获取设备的IP地址？
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问如何利用代码获取设备的IP地址？EN