IOS获取当前连接wifi（SSID...）

On iOS 4.1+, you can do this:

#import <SystemConfiguration/CaptiveNetwork.h> - (id)fetchSSIDInfo { NSArray *ifs = (id)CNCopySupportedInterfaces(); NSLog(@"%s: Supported interfaces: %@", __func__, ifs); id info = nil; for (NSString *ifnam in ifs) { info = (id)CNCopyCurrentNetworkInfo((CFStringRef)ifnam); NSLog(@"%s: %@ => %@", __func__, ifnam, info); if (info && [info count]) { break; } [info release]; } [ifs release]; return [info autorelease]; }

Example output:

2011-03-04 15:32:00.669 ShowSSID[4857:307] -[ShowSSIDAppDelegate fetchSSIDInfo]: Supported interfaces: ( en0 ) 2011-03-04 15:32:00.693 ShowSSID[4857:307] -[ShowSSIDAppDelegate fetchSSIDInfo]: en0 => { BSSID = "ca:fe:ca:fe:ca:fe"; SSID = XXXX; SSIDDATA = <01234567 01234567 01234567>; }

ARC 版本

Here's the cleaned up ARC version
- (id)fetchSSIDInfo { NSArray *ifs = (__bridge_transfer id)CNCopySupportedInterfaces(); NSLog(@"Supported interfaces: %@", ifs); id info = nil; for (NSString *ifnam in ifs) { info = (__bridge_transfer id)CNCopyCurrentNetworkInfo((__bridge CFStringRef)ifnam); NSLog(@"%@ => %@", ifnam, info); if (info && [info count]) { break; } } return info; }