iOS常用系统信息获取方法

一、手机电量获取，方法二需要导入头文件#import<objc/runtime.h>

方法一、获取电池电量(一般用百分数表示,大家自行处理就好）

 -(CGFloat)getBatteryQuantity
 {
     return [[UIDevice currentDevice] batteryLevel];
 }

方法二、

 - (int)getCurrentBatteryLevel
 {
     UIApplication *app = [UIApplication sharedApplication];
     if (app.applicationState == UIApplicationStateActive||
         app.applicationState==UIApplicationStateInactive)
     {
         Ivar ivar=  class_getInstanceVariable([app class],"_statusBar");
         id status  = object_getIvar(app, ivar);
         for (id aview in [status subviews])
         {
             int batteryLevel = ;
             for (id bview in [aview subviews])
             {
                 if ([NSStringFromClass([bview class]) caseInsensitiveCompare:@"UIStatusBarBatteryItemView"]
                     == NSOrderedSame&&[[[UIDevice currentDevice] systemVersion] floatValue] >=6.0)
                 {
 
                     Ivar ivar = class_getInstanceVariable([bview class],"_capacity");
                     if(ivar)
                     {
                         batteryLevel = ((int (*)(id, Ivar))object_getIvar)(bview, ivar);
                         //这种方式也可以
                         /*ptrdiff_t offset = ivar_getOffset(ivar);
                          unsigned char *stuffBytes = (unsigned char *)(__bridge void *)bview;
                          batteryLevel = * ((int *)(stuffBytes + offset));*/
                         if (batteryLevel >  && batteryLevel <= ){
                             return batteryLevel;
                         }
                         else{
                             return ;
                         }
                     }
                 }
             }
         }
     }
     return ;
 }

二、获取手机电池状态（UIDeviceBatteryState为枚举类型）

 //     UIDeviceBatteryStateUnknown：无法取得充电状态情况
 //     UIDeviceBatteryStateUnplugged：非充电状态
 //     UIDeviceBatteryStateCharging：充电状态
 //     UIDeviceBatteryStateFull：充满状态（连接充电器充满状态）
 
 -(UIDeviceBatteryState)getBatteryStauts
 {
     UIDevice *device = [UIDevice currentDevice];
     device.batteryMonitoringEnabled = YES;
     return device.batteryState;
 }

三、获取手机总运行内存大小

 //3.获取总内存大小
 -(NSString *)getTotalMemorySize
 {
     return [self fileSizeToString:[NSProcessInfo processInfo].physicalMemory];
 }
 
 -(NSString *)fileSizeToString:(unsigned long long)fileSize
 {
     NSInteger KB = ;
     NSInteger MB = KB*KB;
     NSInteger GB = MB*KB;
 
     if (fileSize < )  {
         return @"0 B";
     }else if (fileSize < KB)    {
         return @"< 1 KB";
     }else if (fileSize < MB)    {
         return [NSString stringWithFormat:@"%.1f KB",((CGFloat)fileSize)/KB];
     }else if (fileSize < GB)    {
         return [NSString stringWithFormat:@"%.1f MB",((CGFloat)fileSize)/MB];
     }else   {
         return [NSString stringWithFormat:@"%.1f GB",((CGFloat)fileSize)/GB];
     }
 }

四、获取当前剩余内存和已用内存，需要添加头文件#import <sys/sysctl.h> 和#import <mach/mach.h>

 // 获取当前设备可用内存(单位：MB）
 - (double)availableMemory
 {
   vm_statistics_data_t vmStats;
   mach_msg_type_number_t infoCount = HOST_VM_INFO_COUNT;
   kern_return_t kernReturn = host_statistics(mach_host_self(),
                                              HOST_VM_INFO,
                                              (host_info_t)&vmStats,
                                              &infoCount);  
 
   if (kernReturn != KERN_SUCCESS) {
     return NSNotFound;
   }  
 
   return ((vm_page_size *vmStats.free_count) / 1024.0) / 1024.0;
 }  
 
 // 获取当前任务所占用的内存（单位：MB）
 - (double)usedMemory
 {
   task_basic_info_data_t taskInfo;
   mach_msg_type_number_t infoCount = TASK_BASIC_INFO_COUNT;
   kern_return_t kernReturn = task_info(mach_task_self(),
                                        TASK_BASIC_INFO,
                                        (task_info_t)&taskInfo,
                                        &infoCount);  
 
   if (kernReturn != KERN_SUCCESS
       ) {
     return NSNotFound;
   }  
 
   return taskInfo.resident_size / 1024.0 / 1024.0;
 }

五、获取手机型号，需要添加头文件#import<sys/utsname.h>

 + (NSString *)getCurrentiPhoneType
 {
     struct utsname systemInfo;
     uname(&systemInfo);
     NSString *platform = [NSString stringWithCString:systemInfo.machine encoding:NSASCIIStringEncoding];
 
     if ([platform isEqualToString:@"iPhone1,1"]) return @"iPhone 2G";
 
     if ([platform isEqualToString:@"iPhone1,2"]) return @"iPhone 3G";
 
     if ([platform isEqualToString:@"iPhone2,1"]) return @"iPhone 3GS";
 
     if ([platform isEqualToString:@"iPhone3,1"]) return @"iPhone 4";
 
     if ([platform isEqualToString:@"iPhone3,2"]) return @"iPhone 4";
 
     if ([platform isEqualToString:@"iPhone3,3"]) return @"iPhone 4";
 
     if ([platform isEqualToString:@"iPhone4,1"]) return @"iPhone 4S";
 
     if ([platform isEqualToString:@"iPhone5,1"]) return @"iPhone 5";
 
     if ([platform isEqualToString:@"iPhone5,2"]) return @"iPhone 5";
 
     if ([platform isEqualToString:@"iPhone5,3"]) return @"iPhone 5c";
 
     if ([platform isEqualToString:@"iPhone5,4"]) return @"iPhone 5c";
 
     if ([platform isEqualToString:@"iPhone6,1"]) return @"iPhone 5s";
 
     if ([platform isEqualToString:@"iPhone6,2"]) return @"iPhone 5s";
 
     if ([platform isEqualToString:@"iPhone7,1"]) return @"iPhone 6 Plus";
 
     if ([platform isEqualToString:@"iPhone7,2"]) return @"iPhone 6";
 
     if ([platform isEqualToString:@"iPhone8,1"]) return @"iPhone 6s";
 
     if ([platform isEqualToString:@"iPhone8,2"]) return @"iPhone 6s Plus";
 
     if([platform isEqualToString:@"iPhone8,4"]) return@"iPhone SE";
 
     if([platform isEqualToString:@"iPhone9,1"]) return@"iPhone 7";
 
     if([platform isEqualToString:@"iPhone9,2"]) return@"iPhone 7 Plus";
 
     if([platform isEqualToString:@"iPhone10,1"]) return@"iPhone 8";
 
     if([platform isEqualToString:@"iPhone10,4"]) return@"iPhone 8";
 
     if([platform isEqualToString:@"iPhone10,2"]) return@"iPhone 8 Plus";
 
     if([platform isEqualToString:@"iPhone10,5"]) return@"iPhone 8 Plus";
 
     if([platform isEqualToString:@"iPhone10,3"]) return@"iPhone X";
 
     if([platform isEqualToString:@"iPhone10,6"]) return@"iPhone X";
 
     if([platform isEqualToString:@"iPod1,1"]) return@"iPod Touch 1G";
 
     if([platform isEqualToString:@"iPod2,1"]) return@"iPod Touch 2G";
 
     if([platform isEqualToString:@"iPod3,1"]) return@"iPod Touch 3G";
 
     if([platform isEqualToString:@"iPod4,1"]) return@"iPod Touch 4G";
 
     if([platform isEqualToString:@"iPod5,1"]) return@"iPod Touch 5G";
 
     if([platform isEqualToString:@"iPad1,1"]) return@"iPad 1G";
 
     if([platform isEqualToString:@"iPad2,1"]) return@"iPad 2";
 
     if([platform isEqualToString:@"iPad2,2"]) return@"iPad 2";
 
     if([platform isEqualToString:@"iPad2,3"]) return@"iPad 2";
 
     if([platform isEqualToString:@"iPad2,4"]) return@"iPad 2";
 
     if([platform isEqualToString:@"iPad2,5"]) return@"iPad Mini 1G";
 
     if([platform isEqualToString:@"iPad2,6"]) return@"iPad Mini 1G";
 
     if([platform isEqualToString:@"iPad2,7"]) return@"iPad Mini 1G";
 
     if([platform isEqualToString:@"iPad3,1"]) return@"iPad 3";
 
     if([platform isEqualToString:@"iPad3,2"]) return@"iPad 3";
 
     if([platform isEqualToString:@"iPad3,3"]) return@"iPad 3";
 
     if([platform isEqualToString:@"iPad3,4"]) return@"iPad 4";
 
     if([platform isEqualToString:@"iPad3,5"]) return@"iPad 4";
 
     if([platform isEqualToString:@"iPad3,6"]) return@"iPad 4";
 
     if([platform isEqualToString:@"iPad4,1"]) return@"iPad Air";
 
     if([platform isEqualToString:@"iPad4,2"]) return@"iPad Air";
 
     if([platform isEqualToString:@"iPad4,3"]) return@"iPad Air";
 
     if([platform isEqualToString:@"iPad4,4"]) return@"iPad Mini 2G";
 
     if([platform isEqualToString:@"iPad4,5"]) return@"iPad Mini 2G";
 
     if([platform isEqualToString:@"iPad4,6"]) return@"iPad Mini 2G";
 
     if([platform isEqualToString:@"iPad4,7"]) return@"iPad Mini 3";
 
     if([platform isEqualToString:@"iPad4,8"]) return@"iPad Mini 3";
 
     if([platform isEqualToString:@"iPad4,9"]) return@"iPad Mini 3";
 
     if([platform isEqualToString:@"iPad5,1"]) return@"iPad Mini 4";
 
     if([platform isEqualToString:@"iPad5,2"]) return@"iPad Mini 4";
 
     if([platform isEqualToString:@"iPad5,3"]) return@"iPad Air 2";
 
     if([platform isEqualToString:@"iPad5,4"]) return@"iPad Air 2";
 
     if([platform isEqualToString:@"iPad6,3"]) return@"iPad Pro 9.7";
 
     if([platform isEqualToString:@"iPad6,4"]) return@"iPad Pro 9.7";
 
     if([platform isEqualToString:@"iPad6,7"]) return@"iPad Pro 12.9";
 
     if([platform isEqualToString:@"iPad6,8"]) return@"iPad Pro 12.9";
 
     if([platform isEqualToString:@"i386"]) return@"iPhone Simulator";
 
     if([platform isEqualToString:@"x86_64"]) return@"iPhone Simulator";
 
     return platform;
 }

六、IP地址获取，只适用于WiFi网络需要添加以下头文件和宏定义

 #import <ifaddrs.h>  //ip
 #import <arpa/inet.h>
 #import <net/if.h>
 #import <__clang_cuda_runtime_wrapper.h>
 
 #define IOS_CELLULAR    @"pdp_ip0"
 #define IOS_WIFI        @"en0"
 #define IOS_VPN         @"utun0"
 #define IP_ADDR_IPv4    @"ipv4"
 #define IP_ADDR_IPv6    @"ipv6"

方法一、

 - (NSString *)deviceIPAdress {
     NSString *address = @"an error occurred when obtaining ip address";
     struct ifaddrs *interfaces = NULL;
     struct ifaddrs *temp_addr = NULL;
     int success = ;
 
     success = getifaddrs(&interfaces);
     if (success == )  // 0 表示获取成功
      {
         temp_addr = interfaces;
         while (temp_addr != NULL) {
             if( temp_addr->ifa_addr->sa_family == AF_INET) {
                 // Check if interface is en0 which is the wifi connection on the iPhone
                 if ([[NSString stringWithUTF8String:temp_addr->ifa_name] isEqualToString:@"en0"]) {
                     // Get NSString from C String
                     address = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr)];
                 }
             }
 
             temp_addr = temp_addr->ifa_next;
         }
     }
     freeifaddrs(interfaces);
     return address;
 }

方法二、获取设备当前网络IP地址 (WiFi 手机流量通用)

 //获取IPV4地址
 + (NSString *)getDevicesIPV4Address
 {
     return [self getDevicesIPAddress:YES];
 }
 
 //获取IPV6地址
 + (NSString *)getDevicesIPV6Address
 {
     return [self getDevicesIPAddress:NO];
 }

 + (NSString *)getDevicesIPAddress:(BOOL)preferIPv4
 {
     NSArray *searchArray = preferIPv4 ? @[IOS_VPN @"/" IP_ADDR_IPv4, IOS_VPN @"/" IP_ADDR_IPv6, IOS_WIFI @"/" IP_ADDR_IPv4, IOS_WIFI @"/" IP_ADDR_IPv6, IOS_CELLULAR @"/" IP_ADDR_IPv4, IOS_CELLULAR @"/" IP_ADDR_IPv6 ] :  @[ IOS_VPN @"/" IP_ADDR_IPv6, IOS_VPN @"/" IP_ADDR_IPv4, IOS_WIFI @"/" IP_ADDR_IPv6, IOS_WIFI @"/" IP_ADDR_IPv4, IOS_CELLULAR @"/" IP_ADDR_IPv6, IOS_CELLULAR @"/" IP_ADDR_IPv4 ] ;
     NSDictionary *addresses = [self getIPAddresses];
     __block NSString *address;
     [searchArray enumerateObjectsUsingBlock:^(NSString *key, NSUInteger idx, BOOL *stop)
      {
          address = addresses[key];
          //筛选出IP地址格式
          if([self isValidatIP:address isIpV4:preferIPv4]) *stop = YES;
      } ];
     return address ? address : @"0.0.0.0";
 }
 
 + (BOOL)isValidatIP:(NSString *)ipAddress isIpV4:(BOOL)ipv4 {
     if (ipAddress.length == ) {
         return NO;
     }
     NSString *urlRegEx;
     if (ipv4)
     {
         urlRegEx = @"^([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\."
         "([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\."
         "([01]?\\d\\d?|2[0-4]\\d|25[0-5])\\."
         "([01]?\\d\\d?|2[0-4]\\d|25[0-5])$";
     }
     else
     {
         urlRegEx  = @"^\\s*((([0-9A-Fa-f]{1,4}:){7}([0-9A-Fa-f]{1,4}|:))|(([0-9A-Fa-f]{1,4}:){6}(:[0-9A-Fa-f]{1,4}|((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3})|:))|(([0-9A-Fa-f]{1,4}:){5}(((:[0-9A-Fa-f]{1,4}){1,2})|:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3})|:))|(([0-9A-Fa-f]{1,4}:){4}(((:[0-9A-Fa-f]{1,4}){1,3})|((:[0-9A-Fa-f]{1,4})?:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){3}(((:[0-9A-Fa-f]{1,4}){1,4})|((:[0-9A-Fa-f]{1,4}){0,2}:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){2}(((:[0-9A-Fa-f]{1,4}){1,5})|((:[0-9A-Fa-f]{1,4}){0,3}:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:))|(([0-9A-Fa-f]{1,4}:){1}(((:[0-9A-Fa-f]{1,4}){1,6})|((:[0-9A-Fa-f]{1,4}){0,4}:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:))|(:(((:[0-9A-Fa-f]{1,4}){1,7})|((:[0-9A-Fa-f]{1,4}){0,5}:((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)(\\.(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]?\\d)){3}))|:)))(%.+)?\\s*$";
     }
 
     NSError *error;
     NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:urlRegEx options: error:&error];
 
     if (regex != nil) {
         NSTextCheckingResult *firstMatch=[regex firstMatchInString:ipAddress options: range:NSMakeRange(, [ipAddress length])];
         if (firstMatch) {
 //            NSRange resultRange = [firstMatch rangeAtIndex:0];
 //            NSString *result=[ipAddress substringWithRange:resultRange];
             return YES;
         }
     }
     return NO;
 }
 
 + (NSDictionary *)getIPAddresses
 {
     NSMutableDictionary *addresses = [NSMutableDictionary dictionaryWithCapacity:];
 
     // retrieve the current interfaces - returns 0 on success
     struct ifaddrs *interfaces;
     if(!getifaddrs(&interfaces)) {
         // Loop through linked list of interfaces
         struct ifaddrs *interface;
         for(interface=interfaces; interface; interface=interface->ifa_next) {
             if(!(interface->ifa_flags & IFF_UP) /* || (interface->ifa_flags & IFF_LOOPBACK) */ ) {
                 continue; // deeply nested code harder to read
             }
             const struct sockaddr_in *addr = (const struct sockaddr_in*)interface->ifa_addr;
             char addrBuf[ MAX(INET_ADDRSTRLEN, INET6_ADDRSTRLEN) ];
             if(addr && (addr->sin_family==AF_INET || addr->sin_family==AF_INET6)) {
                 NSString *name = [NSString stringWithUTF8String:interface->ifa_name];
                 NSString *type;
                 if(addr->sin_family == AF_INET) {
                     if(inet_ntop(AF_INET, &addr->sin_addr, addrBuf, INET_ADDRSTRLEN)) {
                         type = IP_ADDR_IPv4;
                     }
                 } else {
                     const struct sockaddr_in6 *addr6 = (const struct sockaddr_in6*)interface->ifa_addr;
                     if(inet_ntop(AF_INET6, &addr6->sin6_addr, addrBuf, INET6_ADDRSTRLEN)) {
                         type = IP_ADDR_IPv6;
                     }
                 }
                 if(type) {
                     NSString *key = [NSString stringWithFormat:@"%@/%@", name, type];
                     addresses[key] = [NSString stringWithUTF8String:addrBuf];
                 }
             }
         }
         // Free memory
         freeifaddrs(interfaces);
     }
     return [addresses count] ? addresses : nil;
 }

还需要用到另一个辅助类IPAddressConfig

IPAddressConfig.h

 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 #include <sys/ioctl.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <netdb.h>
 #include <arpa/inet.h>
 #include <sys/sockio.h>
 #include <net/if.h>
 #include <errno.h>
 #include <net/if_dl.h>
 #include <net/ethernet.h>
 #include <ifaddrs.h>
 #include <arpa/inet.h>
 
 #define BUFFERSIZE  4000
 #define MAXADDRS    32
 #define min(a,b)    ((a) < (b) ? (a) : (b))
 #define max(a,b)    ((a) > (b) ? (a) : (b))
 
 @interface IPAddressConfig : NSObject
 
 // extern
 extern char *if_names[MAXADDRS];
 extern char *ip_names[MAXADDRS];
 extern char *hw_addrs[MAXADDRS];
 extern unsigned long ip_addrs[MAXADDRS];
 
 // Function prototypes
 void InitAddresses(void);
 void FreeAddresses(void);
 void GetIPAddresses(void);
 void GetHWAddresses(void);
 
 @end

IPAddressConfig.m

 @implementation IPAddressConfig
 
 char *if_names[MAXADDRS];
 char *ip_names[MAXADDRS];
 char *hw_addrs[MAXADDRS];
 unsigned long ip_addrs[MAXADDRS];
 
 static int   nextAddr = ;
 
 void InitAddresses()
 {
     int i;
     for (i=; i<MAXADDRS; ++i)
     {
         if_names[i] = ip_names[i] = hw_addrs[i] = NULL;
         ip_addrs[i] = ;
     }
 }
 
 void FreeAddresses()
 {
     int i;
     for (i=; i<MAXADDRS; ++i)
     {
         if (if_names[i] != ) free(if_names[i]);
         if (ip_names[i] != ) free(ip_names[i]);
         if (hw_addrs[i] != ) free(hw_addrs[i]);
         ip_addrs[i] = ;
     }
     InitAddresses();
 }
 
 void GetIPAddresses()
 {
     int                 i, len, flags;
     char                buffer[BUFFERSIZE], *ptr, lastname[IFNAMSIZ], *cptr;
     struct ifconf       ifc;
     struct ifreq        *ifr, ifrcopy;
     struct sockaddr_in  *sin;
 
     char temp[];
 
     int sockfd;
 
     for (i=; i<MAXADDRS; ++i)
     {
         if_names[i] = ip_names[i] = NULL;
         ip_addrs[i] = ;
     }
 
     sockfd = socket(AF_INET, SOCK_DGRAM, );
     if (sockfd < )
     {
         perror("socket failed");
         return;
     }
 
     ifc.ifc_len = BUFFERSIZE;
     ifc.ifc_buf = buffer;
 
     if (ioctl(sockfd, SIOCGIFCONF, &ifc) < )
     {
         perror("ioctl error");
         return;
     }
 
     lastname[] = ;
 
     for (ptr = buffer; ptr < buffer + ifc.ifc_len; )
     {
         ifr = (struct ifreq *)ptr;
         len = max(sizeof(struct sockaddr), ifr->ifr_addr.sa_len);
         ptr += sizeof(ifr->ifr_name) + len;   // for next one in buffer
 
         if (ifr->ifr_addr.sa_family != AF_INET)
         {
             continue; // ignore if not desired address family
         }
 
         if ((cptr = (char *)strchr(ifr->ifr_name, ':')) != NULL)
         {
             *cptr = ;        // replace colon will null
         }
 
         if (strncmp(lastname, ifr->ifr_name, IFNAMSIZ) == )
         {
             continue; /* already processed this interface */
         }
 
         memcpy(lastname, ifr->ifr_name, IFNAMSIZ);
 
         ifrcopy = *ifr;
         ioctl(sockfd, SIOCGIFFLAGS, &ifrcopy);
         flags = ifrcopy.ifr_flags;
         if ((flags & IFF_UP) == )
         {
             continue; // ignore if interface not up
         }
 
         if_names[nextAddr] = (char *)malloc(strlen(ifr->ifr_name)+);
         if (if_names[nextAddr] == NULL)
         {
             return;
         }
         strcpy(if_names[nextAddr], ifr->ifr_name);
 
         sin = (struct sockaddr_in *)&ifr->ifr_addr;
         strcpy(temp, inet_ntoa(sin->sin_addr));
 
         ip_names[nextAddr] = (char *)malloc(strlen(temp)+);
         if (ip_names[nextAddr] == NULL)
         {
             return;
         }
         strcpy(ip_names[nextAddr], temp);
 
         ip_addrs[nextAddr] = sin->sin_addr.s_addr;
 
         ++nextAddr;
     }
 
     close(sockfd);
 }
 
 void GetHWAddresses()
 {
     struct ifconf ifc;
     struct ifreq *ifr;
     int i, sockfd;
     char buffer[BUFFERSIZE], *cp, *cplim;
     char temp[];
 
     for (i=; i<MAXADDRS; ++i)
     {
         hw_addrs[i] = NULL;
     }
 
     sockfd = socket(AF_INET, SOCK_DGRAM, );
     if (sockfd < )
     {
         perror("socket failed");
         return;
     }
 
     ifc.ifc_len = BUFFERSIZE;
     ifc.ifc_buf = buffer;
 
     if (ioctl(sockfd, SIOCGIFCONF, (char *)&ifc) < )
     {
         perror("ioctl error");
         close(sockfd);
         return;
     }
 
     ifr = ifc.ifc_req;
 
     cplim = buffer + ifc.ifc_len;
 
     for (cp=buffer; cp < cplim; )
     {
         ifr = (struct ifreq *)cp;
         if (ifr->ifr_addr.sa_family == AF_LINK)
         {
             struct sockaddr_dl *sdl = (struct sockaddr_dl *)&ifr->ifr_addr;
             int a,b,c,d,e,f;
             int i;
 
             strcpy(temp, (char *)ether_ntoa((const struct ether_addr *)LLADDR(sdl)));
             sscanf(temp, "%x:%x:%x:%x:%x:%x", &a, &b, &c, &d, &e, &f);
             sprintf(temp, "%02X:%02X:%02X:%02X:%02X:%02X",a,b,c,d,e,f);
 
             for (i=; i<MAXADDRS; ++i)
             {
                 if ((if_names[i] != NULL) && (strcmp(ifr->ifr_name, if_names[i]) == ))
                 {
                     if (hw_addrs[i] == NULL)
                     {
                         hw_addrs[i] = (char *)malloc(strlen(temp)+);
                         strcpy(hw_addrs[i], temp);
                         break;
                     }
                 }
             }
         }
         cp += sizeof(ifr->ifr_name) + max(sizeof(ifr->ifr_addr), ifr->ifr_addr.sa_len);
     }
     close(sockfd);
 }
 
 @end

七、获取手机当前连接的WiFi名称

 - (NSString *)getWifiName
 {
     NSString *wifiName = nil;
 
     CFArrayRef wifiInterfaces = CNCopySupportedInterfaces();
     if (!wifiInterfaces) {
         return nil;
     }
 
     NSArray *interfaces = (__bridge NSArray *)wifiInterfaces;
 
     for (NSString *interfaceName in interfaces) {
         CFDictionaryRef dictRef = CNCopyCurrentNetworkInfo((__bridge CFStringRef)(interfaceName));
 
         if (dictRef) {
             NSDictionary *networkInfo = (__bridge NSDictionary *)dictRef;
 
             wifiName = [networkInfo objectForKey:(__bridge NSString *)kCNNetworkInfoKeySSID];
 
             CFRelease(dictRef);
         }
     }
 
     CFRelease(wifiInterfaces);
     return wifiName;
 }

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