iOS 开发，判断手机WiFi是否打开及获取WiFi名称

判断手机WiFi是否打开

- (BOOL)isWiFiEnabled {
    NSCountedSet * cset = [NSCountedSet new];
    struct ifaddrs *interfaces;
    if(!getifaddrs(&interfaces)){
        for( struct ifaddrs *interface = interfaces; interface; interface = interface->ifa_next) {
            if ( (interface->ifa_flags & IFF_UP) == IFF_UP ) {
                [cset addObject:[NSString stringWithUTF8String:interface->ifa_name]];
            }
        }
    }
    return [cset countForObject:@"awdl0"] > 1 ? YES : NO;
}

获取WiFi名称

- (NSString *)getWiFiName {
    if (@available(iOS 13.0, *)) {
        //用户明确拒绝，可以弹窗提示用户到设置中手动打开权限
        if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusDenied) {
            NSLog(@"User has explicitly denied authorization for this application, or location services are disabled in Settings.");
            //使用下面接口可以打开当前应用的设置页面
            //[[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
            return nil;
        }
        CLLocationManager* cllocation = [[CLLocationManager alloc] init];
        if(![CLLocationManager locationServicesEnabled] || [CLLocationManager authorizationStatus] == kCLAuthorizationStatusNotDetermined){
            //弹框提示用户是否开启位置权限
            [cllocation requestWhenInUseAuthorization];
            usleep(50);
            //递归等待用户选选择
            //return [self getWifiSsidWithCallback:callback];
        }
    }
    NSString *wifiName = nil;
    CFArrayRef wifiInterfaces = CNCopySupportedInterfaces();
    if (!wifiInterfaces) {
        return nil;
    }
    NSArray *interfaces = (__bridge NSArray *)wifiInterfaces;
    for (NSString *interfaceName in interfaces) {
        CFDictionaryRef dictRef = CNCopyCurrentNetworkInfo((__bridge CFStringRef)(interfaceName));

        if (dictRef) {
            NSDictionary *networkInfo = (__bridge NSDictionary *)dictRef;
            NSLog(@"network info -> %@", networkInfo);
            wifiName = [networkInfo objectForKey:(__bridge NSString *)kCNNetworkInfoKeySSID];
            CFRelease(dictRef);
        }
    }

    CFRelease(wifiInterfaces);
    return wifiName;
}

注意

1. 需要引入的头文件

#import <ifaddrs.h>
#import <net/if.h>
#import <SystemConfiguration/CaptiveNetwork.h>

2. info.plist 文件需要配置获取的权限

Privacy - Location Always Usage Description
Privacy - Location When In Use Usage Description

3. iOS 13 以后

获取WiFi名称，必须要先允许获取定位信息