ios - 使用 WLAN 和蜂窝设置获取应用程序

Question

如何获取下图中的 Apps Using WLAN & Cellular Setting 设置状态？
我如何检查我的应用程序的状态(无、WLAN、WLAN 和蜂窝网络)，以便我可以显示警报以提醒用户打开此开关 ~

Answer 1

当 Reachability是NotReachable，有2种情况，

1. 没有连接wifi
2. 使用 WLAN 和蜂窝设置的应用 关闭

如果能获取到当前wifi的SSID，就可以判断wifi已连接，网络开关已关闭~

#import <SystemConfiguration/CaptiveNetwork.h>

    BOOL networkSwitchOff = NO;
    Reachability *reach = [Reachability reachabilityForInternetConnection];
    NetworkStatus status = [reach currentReachabilityStatus];
    if(status==NotReachable){  //Reachability NotReachable
        NSArray *supportedInterfaces = (__bridge_transfer id)CNCopySupportedInterfaces();
        id info = nil;
        NSString *ssid = nil;
        for (NSString *networkInfo in supportedInterfaces) {
            info = (__bridge_transfer id)CNCopyCurrentNetworkInfo((__bridge CFStringRef)networkInfo);
            if (info && [info count])
                break;
        }

        if (info) {
            NSDictionary *dctySSID = (NSDictionary *)info;
            //we can't get ssid if wifi is not connected
            ssid = [dctySSID objectForKey:@"SSID"]; 
        }
        networkSwitchOff = (ssid!=nil);
    }