Question

怎么使用Reachability查询联网状态

Answer 1

(NSNotification *)notify {

Reachability *curReach = [notify object];

NetworkStatus networkStatus = [curReach currentReachabilityStatus]、关闭通知并释放对象

[[NSNotificationCenter defaultCenter] removeObserver;/有网络状态，3G或wifi

//

address;

if (networkStatus == NotReachable) { / :nil];

if (reachability) {

[reachability stopNotifier]1、注册通知

[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(reachabilityIsChanged:)
name;

[reachability startNotifier];
/

address;

reachability = [[Reachability reachabilityWithAddress;/无网络状态

//TODO

} else { :kReachabilityChangedNotification object:kReachabilityChangedNotification object.sin_family = AF_INET;

address.sin_port = htonl(IP_PORT);

address.sin_addr, sizeof(address));TODO

}

}

4:address] retain].sin_len = sizeof(address):self name.s_addr = htons(inet_addr(IP_Address));/开启网络检测

3、网络状态改变接受通知处理

-(void)reachabilityIsChanged;/关闭网络检测

[reachability release]:nil];

2、创建Reachability实例对象并开启通知

struct sockaddr_in address;

memset(address, 0