iOS 获取wifi ssid 名称

SSID全称Service Set IDentifier, 即Wifi网络的公开名称.在IOS 4.1以上版本提供了公开的方法来获取该信息.

[html] view
plaincopy

#import <SystemConfiguration/CaptiveNetwork.h>

[html] view
plaincopy

-(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);

if (info && [info count]) {

break;

}

[info release];

}

[ifs release];

return [info autorelease];

}



- (NSString *)currentWifiSSID {

// Does not work on the simulator.

NSString *ssid = nil;

NSArray *ifs = ( id)CNCopySupportedInterfaces();

NSLog(@"ifs:%@",ifs);

for (NSString *ifnam in ifs) {

NSDictionary *info = (id)CNCopyCurrentNetworkInfo((CFStringRef)ifnam);

NSLog(@"dici：%@",[info allKeys]);

if (info[@"SSIDD"]) {

ssid = info[@"SSID"];



}

}

return ssid;

}



- (void)viewDidLoad

{

[super viewDidLoad];



tempLabel=[[UILabel alloc]initWithFrame:CGRectMake(50, 40, 200, 40)];

tempLabel.textAlignment=NSTextAlignmentCenter;

[self.view addSubview:tempLabel];

NSDictionary *ifs = [self fetchSSIDInfo];

NSString *ssid = [[ifs objectForKey:@"SSID"] lowercaseString];

tempLabel.text=ssid;



}

log 信息 ：

[html] view
plaincopy

2013-06-05 21:39:14.357 wifiNameDemo[9877:707] dici：{

BSSID = "f4:ec:38:40:cc:e8";

SSID = "Nice_Apple";

SSIDDATA = <4e696365 5f417070 6c65>;

}

2013-06-05 21:39:14.360 wifiNameDemo[9877:707] Nice_Apple

ARC 版本：

[html] view
plaincopy

- (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;

}

效果如下：



补充：－－－－－－此方法也未必通过审核－－－－－－－－－－－－－－－－－－

?
记得增加：

#import <SystemConfiguration/CaptiveNetwork.h>

//首先添加框架首先添加框架:SystemConfiguration.framework

如果你不考虑提交App Store审核问题

可以看看这个项目库

http://code.google.com/p/iphone-wireless/