iOS平台网络类型检测

#import <Foundation/Foundation.h>
/*
依赖于以下Framework
SystemConfiguration
CoreTelephony
*/
typedef enum _NetWorkType
{
kNetworkOff = 0,
kNetworkWifi,
kNetworkWLan,//如果不能获取到更详细的,将统一返回该值(iOS7以上才能获取到)
kNetworkWLan2G,
kNetworkWLan3G,
kNetworkGPRS,
kNetworkEdge,
kNetworkWCDMA,
kNetworkHSDPA,
kNetworkHSUPA,
kNetworkCDMA1x,
kNetworkCDMAEVDORev0,
kNetworkCDMAEVDORevA,
kNetworkCDMAEVDORevB,
kNetworkHRPD,
kNetworkLTE,
}NetworkType;
@interface HSNetworkDetect : NSObject

//通用接口
/*
返回0~2的网络类型枚举值NetworkType
*/
+(NetworkType)getNetworkType;
/*
iOS7及以上,确定是蜂窝网络的情况下,返回>2的网络类型枚举值;否则,仍返回2
*/
+(NetworkType)getCellularDataNetworkType;
/*
检测网络是否可达,使用Reachability
*/
+(BOOL)isReachable:(NSString*)address port:(NSInteger)port;
/*
获取当前连接的WIFI热点的SSID
*/
+(NSString*)getWifiSSID;

@end

#import "HSNetworkDetect.h"
#import "Reachability.h"
#import <CoreTelephony/CTTelephonyNetworkInfo.h>
#import <SystemConfiguration/CaptiveNetwork.h>

#define ISIOS7 !([[[UIDevice currentDevice] systemVersion] floatValue] <=6.9f)
#define SENTENCED_EMPTY(string)    (string = ((string == nil) ? @"":string))

@implementation HSNetworkDetect
#pragma mark 通用接口
+(NetworkType)getNetworkType
{
struct sockaddr_in zeroAddress;
bzero(&zeroAddress, sizeof(zeroAddress));
zeroAddress.sin_len = sizeof(zeroAddress);
zeroAddress.sin_family = AF_INET;
SCNetworkReachabilityRef defaultRouteReachability = SCNetworkReachabilityCreateWithAddress(NULL, (struct sockaddr *)&zeroAddress); //创建测试连接的引用：
SCNetworkReachabilityFlags flags;
SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags);
if ((flags & kSCNetworkReachabilityFlagsReachable) == 0)
{
return kNetworkOff;
}
NetworkType retVal = kNetworkOff;
if ((flags & kSCNetworkReachabilityFlagsConnectionRequired) == 0)
{
retVal = kNetworkWifi;
}
if ((((flags & kSCNetworkReachabilityFlagsConnectionOnDemand ) != 0) ||
(flags & kSCNetworkReachabilityFlagsConnectionOnTraffic) != 0))
{
if ((flags & kSCNetworkReachabilityFlagsInterventionRequired) == 0)
{
retVal = kNetworkWifi;
}
}

if ((flags & kSCNetworkReachabilityFlagsIsWWAN) == kSCNetworkReachabilityFlagsIsWWAN)
{
if((flags & kSCNetworkReachabilityFlagsReachable) == kSCNetworkReachabilityFlagsReachable) {
if ((flags & kSCNetworkReachabilityFlagsTransientConnection) == kSCNetworkReachabilityFlagsTransientConnection)
{
retVal = kNetworkWLan3G;
if((flags & kSCNetworkReachabilityFlagsConnectionRequired) == kSCNetworkReachabilityFlagsConnectionRequired)
{
retVal = kNetworkWLan2G;
}
}
}
}
return retVal;
}
+(NetworkType)getCellularDataNetworkType
{
if (ISIOS7)
{
CTTelephonyNetworkInfo *telephonyInfo = [CTTelephonyNetworkInfo new];
NSString* wlanNetwork = telephonyInfo.currentRadioAccessTechnology;
if (wlanNetwork == nil)
return kNetworkOff;
if([wlanNetwork isEqualToString:CTRadioAccessTechnologyGPRS  		 ])
{
return kNetworkGPRS;
}
else if([wlanNetwork isEqualToString:CTRadioAccessTechnologyEdge        ])
{
return kNetworkEdge;
}
else if([wlanNetwork isEqualToString:CTRadioAccessTechnologyWCDMA       ])
{
return kNetworkWCDMA;
}
else if([wlanNetwork isEqualToString:CTRadioAccessTechnologyHSDPA       ])
{
return kNetworkHSDPA;
}
else if([wlanNetwork isEqualToString:CTRadioAccessTechnologyHSUPA       ])
{
return kNetworkHSUPA;
}
else if([wlanNetwork isEqualToString:CTRadioAccessTechnologyCDMA1x      ])
{
return kNetworkCDMA1x;
}
else if([wlanNetwork isEqualToString:CTRadioAccessTechnologyCDMAEVDORev0])
{
return kNetworkCDMAEVDORev0;
}
else if([wlanNetwork isEqualToString:CTRadioAccessTechnologyCDMAEVDORevA])
{
return kNetworkCDMAEVDORevA;
}
else if([wlanNetwork isEqualToString:CTRadioAccessTechnologyCDMAEVDORevB])
{
return kNetworkCDMAEVDORevB;
}
else if([wlanNetwork isEqualToString:CTRadioAccessTechnologyeHRPD       ])
{
return kNetworkHRPD;
}
else if([wlanNetwork isEqualToString:CTRadioAccessTechnologyLTE         ])
{
return kNetworkLTE;
}
}
return kNetworkWLan;
}
+(NSString*)getWifiSSID
{
NSArray *ifs = (__bridge id)CNCopySupportedInterfaces();
id info = nil;
for (NSString *ifnam in ifs)
{
info = (__bridge id)CNCopyCurrentNetworkInfo((__bridge CFStringRef)ifnam);
if (info && [info count])
{
NSString *ssid=[info objectForKey:(__bridge NSString *)kCNNetworkInfoKeySSID];
//NSString *bssid=[info objectForKey:(__bridge NSString *)kCNNetworkInfoKeyBSSID];
//NSLog(@"interfaceName:%@ ssid:%@ bssid:%@",ifnam,ssid,bssid);
return ssid;
}
}
return nil;
}
+(BOOL)isReachable:(NSString*)address port:(NSInteger)port
{
Reachability* poReach = [Reachability reachabilityWithHostname:[NSString stringWithFormat:@"%@:%d",address,port]];
BOOL bRet = [poReach isReachable];
return bRet;
}

@end

PS--->老大的脾气你别猜,猜来猜去你也猜不明白.