typedef NS_ENUM(NSInteger, HY_NetworkStatus) { HY_NotReachable = 0, HY_ReachableViaWiFi = 2, HY_ReachableViaWWAN = 1, HY_ReachableVia_2G = 3, HY_ReachableVia_3G = 4, HY_ReachableVia_4G = 5, };

#import "ReachabilityHelper"

ReachabilityHelper * reachHelper = [ReachabilityHelper shareReachabilityHelper]; HY_NetworkStatus status = [reachHelper currentReachabilityStatus];//获取当前状态

HY_NetworkStatus status = [reachHelper currentReachabilityString];//获取当前状态文字

//检测网络变化 reachHelper.netChangedBlock = ^(HY_NetworkStatus netStatus) { ... };