变更记录
方案名称
网络 - 判断连接状态
关键字
网络 \ 网络连接 \ Network \ Connection
需求场景
- 需要对网络状态进行判断的场景
参考链接
(无)
详细内容
#####1. 导入 SystemConfiguration.framework ,并 #import<SystemConfiguration/SCNetworkReachability.h>
#####2. 判断设备是否联网
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| + (BOOL)connectedToNetwork{
//创建零地址,0.0.0.0的地址表示查询本机的网络连接状态
struct sockaddr_storage zeroAddress;
bzero(&zeroAddress, sizeof(zeroAddress)); zeroAddress.ss_len = sizeof(zeroAddress); zeroAddress.ss_family = AF_INET;
// Recover reachability flags SCNetworkReachabilityRef defaultRouteReachability = SCNetworkReachabilityCreateWithAddress(NULL, (struct sockaddr *)&zeroAddress); SCNetworkReachabilityFlags flags;
//获得连接的标志 BOOL didRetrieveFlags = SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags); CFRelease(defaultRouteReachability);
//如果不能获取连接标志,则不能连接网络,直接返回 if (!didRetrieveFlags) { return NO; } //根据获得的连接标志进行判断
BOOL isReachable = flags & kSCNetworkFlagsReachable; BOOL needsConnection = flags & kSCNetworkFlagsConnectionRequired; return (isReachable&&!needsConnection) ? YES : NO; }
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效果图
(无)
备注