iOS13 获取已连接的WIFI名称

近期在开发一个物联网APP时,有一个获取手机连接的WIFI名称并广播给物联网设备的功能.在iOS12时并不需要定位功能,但是到了iOS13上需要开启定位功能才可以获取到WIFI名称.

设置info.plist

<key>NSLocationWhenInUseUsageDescription</key>
<string>App需要您的同意,才能在使用期间访问位置</string>
<key>NSLocationAlwaysAndWhenInUseUsageDescription</key>
<string>App需要您的同意,才能始终访问位置</string>
<key>NSLocationUsageDescription</key>
<string>App需要您的同意,才能访问位置</string>
<key>NSLocationAlwaysUsageDescription</key>
<string>App需要您的同意,才能始终访问位置</string>

#import <SystemConfiguration/CaptiveNetwork.h>
#import <CoreLocation/CoreLocation.h>
#import "VC.h"

@interface VC () <CLLocationManagerDelegate>
@property (nonatomic, strong) CLLocationManager *locationManager;
@end
@implementation VC
- (void)viewDidLoad
{
    [super viewDidLoad];
    NSDictionary *ifs = [self fetchSSIDInfo];
    NSLog(@"WIFI:%@", [ifs objectForKey:@"SSID"]);
    if(@available(iOS 13.0, *))
    {
        [self startLocation];
    }
}
/** 注销监听器 */
-(void)dealloc
{
    [[NSNotificationCenter defaultCenter] removeObserver:self];
}
-(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;
}
//开始定位
- (void)startLocation
{
    if ([CLLocationManager locationServicesEnabled])
    {
        self.locationManager = [[CLLocationManager alloc]init];
        self.locationManager.delegate = self;
        self.locationManager.desiredAccuracy = kCLLocationAccuracyKilometer;
        [self.locationManager requestAlwaysAuthorization];
        self.locationManager.distanceFilter = 10.0f;
        [self.locationManager requestAlwaysAuthorization];
        [self.locationManager startUpdatingLocation];
    }
}

- (void)locationManager:(CLLocationManager *)manager didFailWithError:
    (NSError *)error
{
    if ([error code] == kCLErrorDenied)
    {
        NSLog(@"访问被拒绝");
    }
    if ([error code] == kCLErrorLocationUnknown)
    {
        NSLog(@"?法获取位置信息");
    }
}
//定位代理经纬度回调
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:
    (NSArray<CLLocation *> *)locations
{
    CLLocation *newLocation = locations[0];
    // 获取当前所在的城市名
    CLGeocoder *geocoder = [[CLGeocoder alloc] init];
    //根据经纬度反向地理编译出地址信息
    [geocoder reverseGeocodeLocation:newLocation
              completionHandler: ^ (NSArray * array, NSError * error)
             {
                 if (array.count > 0)
                 {
                     CLPlacemark *placemark = [array objectAtIndex:0];
                     NSLog(@"%@", placemark);
            NSDictionary *ifs = [self fetchSSIDInfo];
            NSLog(@"WIFI:%@", [ifs objectForKey:@"SSID"]);
        }
        else if (error == nil && [array count] == 0)
        {
            NSLog(@"No results were returned.");
        }
        else if (error != nil)
        {
            NSLog(@"An error occurred = %@", error);
        }
    }];
    [manager stopUpdatingLocation];
}

@end