获取IP地址，判断是否开启热点

////  FLApController.m//  Demo////  Created by fulin on 16/2/16.//  Copyright © 2016年 fulin. All rights reserved.//#import "FLApController.h"#import <ifaddrs.h>#import <arpa/inet.h>#import "AXNetAddress.h"@implementation FLApController-(void)viewDidLoad{    [super viewDidLoad];    self.view.backgroundColor = [UIColor whiteColor];        //测试获取设备名称    NSLog(@"%@", [self deviceNameForIphone] );    NSLog(@"----------------%D", [self flagWithOpenHotSpot] );}/** *  获取当前设备名称 */- (NSString *)deviceNameForIphone{    return [[UIDevice currentDevice] name];}/** *  判断是否开启热点 */- (BOOL)flagWithOpenHotSpot{    NSDictionary *dict = [self getIpAddresses];    if ( dict ) {        NSArray *keys = dict.allKeys;        for ( NSString *key in keys) {            AXNetAddress *address = dict[key];            if ( address.name && [address.name containsString:@"bridge"])                return YES;        }    }    return NO;}/** *  获取手机的IP地址 */- (NSDictionary *)getIpAddresses{    NSMutableDictionary* addresses = [[NSMutableDictionary alloc] init];    struct ifaddrs *interfaces = NULL;    struct ifaddrs *temp_addr = NULL;        @try {        // retrieve the current interfaces - returns 0 on success        NSInteger success = getifaddrs(&interfaces);        //NSLog(@"%@, success=%d", NSStringFromSelector(_cmd), success);        if (success == 0) {            // Loop through linked list of interfaces            temp_addr = interfaces;            while(temp_addr != NULL) {                if(temp_addr->ifa_addr->sa_family == AF_INET) {                    // Get NSString from C String                    NSString *ifaName = [NSString stringWithUTF8String:temp_addr->ifa_name];                    NSString *address = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *) temp_addr->ifa_addr)->sin_addr)];                    NSString *mask = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *) temp_addr->ifa_netmask)->sin_addr)];                    NSString *gateway = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *) temp_addr->ifa_dstaddr)->sin_addr)];                                        AXNetAddress* netAddress = [[AXNetAddress alloc] init];                    netAddress.name = ifaName;                    netAddress.address = address;                    netAddress.netmask = mask;                    netAddress.gateway = gateway;                    addresses[ifaName] = netAddress;                }                temp_addr = temp_addr->ifa_next;            }        }    }    @catch (NSException *exception) {        //NSLog(@"%@ Exception: %@", DEBUG_FUN, exception);    }    @finally {        // Free memory        freeifaddrs(interfaces);    }    return addresses;}@end