iOS中单点的Internet连接方法？

我在我的应用程序中有这个方法来检查互联网

/*
 Connectivity testing code pulled from Apple's Reachability Example: http://developer.apple.com/library/ios/#samplecode/Reachability
 */
-(BOOL)hasConnectivity {
    struct sockaddr_in zeroAddress;
    bzero(&zeroAddress, sizeof(zeroAddress));
    zeroAddress.sin_len = sizeof(zeroAddress);
    zeroAddress.sin_family = AF_INET;

    SCNetworkReachabilityRef reachability = SCNetworkReachabilityCreateWithAddress(kCFAllocatorDefault, (const struct sockaddr*)&zeroAddress);
    if(reachability != NULL) {
        //NetworkStatus retVal = NotReachable;
        SCNetworkReachabilityFlags flags;
        if (SCNetworkReachabilityGetFlags(reachability, &flags)) {
            if ((flags & kSCNetworkReachabilityFlagsReachable) == 0)
            {
                // if target host is not reachable
                return NO;
            }

            if ((flags & kSCNetworkReachabilityFlagsConnectionRequired) == 0)
            {
                // if target host is reachable and no connection is required
                //  then we'll assume (for now) that your on Wi-Fi
                return YES;
            }


            if ((((flags & kSCNetworkReachabilityFlagsConnectionOnDemand ) != 0) ||
                 (flags & kSCNetworkReachabilityFlagsConnectionOnTraffic) != 0))
            {
                // ... and the connection is on-demand (or on-traffic) if the
                //     calling application is using the CFSocketStream or higher APIs

                if ((flags & kSCNetworkReachabilityFlagsInterventionRequired) == 0)
                {
                    // ... and no [user] intervention is needed
                    return YES;
                }
            }

            if ((flags & kSCNetworkReachabilityFlagsIsWWAN) == kSCNetworkReachabilityFlagsIsWWAN)
            {
                // ... but WWAN connections are OK if the calling application
                //     is using the CFNetwork (CFSocketStream?) APIs.
                return YES;
            }
        }
    }

    return NO;
}

我必须在每节课上粘贴这个方法，并像这样检查互联网

if([self hasConnectivity] == YES){

我想把这个方法放在一个类中，就像我把宏放在Constants.h或.pch文件中一样

是否有任何方法（除了委托，因为我不想太多地使用委托）来做到这一点

---

感谢

将

-（BOOL）hasConnectivity

更改为

+（BOOL）hasConnectivity

（这将实例方法转换为类方法）。将其添加到名为可达性的类中。将

Reachability.h

添加到you.pch。现在调用

[Reachability hasConnectivity]

并从应用程序中的任何位置检查其返回值。轰

您可以将该方法添加为NSObject的类别，这样它将可用于所有类。 因此，您可以为NSObject创建一个名为Network的类别，例如：

//NSObject+Network.h
@interface NSObject (Network)
-(BOOL)hasConnectivity;
@end


// NSObject+Network.m
@implementation NSObject (Network)
-(BOOL)hasConnectivity {
    ...
}
@end

---

在.pch中导入NSObject+Network.h，在所有类中，boom，您都可以访问hasConnectivity。

是的，您可以将

可达性.h

添加到

常量.h

中，只要您在要调用

[可达性hasConnectivity]

的类中导入

常量.h

。