iOS开发 - 获取Wi-Fi及个人热点信息(Object-C)

iOS 14及以上:

1. 需导入CoreLocation库
2. 需获取到精确定位权限

具体不详细展开,网上资料非常多,贴关键代码.

@property (nonatomic, strong) CLLocationManager *locationManager; // 定位管理器


/// ios 14 自动请求临时开启一次精确定位权限
- (void)autoRequestTemporaryFullAccuracyAuthorization {
  
    if (@available(iOS 14.0, *)) {
      
        BOOL isFullAccuracy = self.locationManager.accuracyAuthorization == CLAccuracyAuthorizationFullAccuracy;
      
        if (isFullAccuracy) {
          
            NSLog(@"当前为精确定位状态,不需要申请临时开启一次精确位置权限.");
        
          
        } else {
          
            NSLog(@"当前为模糊定位状态,需要向用户申请临时开启一次精确位置权限.");
            
            // 向用户申请临时开启一次精确位置权限
            [self.locationManager requestTemporaryFullAccuracyAuthorizationWithPurposeKey:@"WantsToGetWiFiSSID"];
        }
      
    } else {
      
    
    }
}


- (CLLocationManager *)locationManager {
  
    if (_locationManager == nil) {
        _locationManager = [[CLLocationManager alloc]init];
        _locationManager.desiredAccuracy = kCLLocationAccuracyBest;
        _locationManager.distanceFilter = 0.1;
    }
    return _locationManager;
}

[NEHotspotNetwork fetchCurrentWithCompletionHandler:^(NEHotspotNetwork * _Nullable currentNetwork) {
        
        if (currentNetwork != nil && currentNetwork.SSID != nil) {

          NSLog(@"当前Wifi的SSID--%@",currentNetwork.SSID);
          
        } else {
          
        }
        
      }];

iOS 9 - iOS 13:

1. 由于iOS12之后需要根据定位才能获取Wifi信息,现有的项目基本从iOS 10或11起步了,所以直接按照iOS12的标准来做,也是需要得到定位权限后再进行获取.
2. 网上很多技术贴的获取方法, 在连接普通路由器时没有问题，但在连接手机开启的热点时，获取的SSID是一个空字符串。
3. 下面是连接热点和普通路由器都正常获取的代码(resultBlock可忽略并自行处理结果回调)

/// 获取SSID
- (void)getSSID {
  
  if (@available(iOS 14.0, *)) {

      [NEHotspotNetwork fetchCurrentWithCompletionHandler:^(NEHotspotNetwork * _Nullable currentNetwork) {

        if (currentNetwork && currentNetwork.SSID && self.resultBlock) {

          self.resultBlock(@{@"wifiSsid":currentNetwork.SSID});

        } else {

          self.resultBlock(@{@"wifiSsid": @"",
                             @"error":@"Please check your wifi connect status"});
        }

      }];

      return;
  }
  
  

  // iOS 14以下获取wifi名字
  
  NSString * wifiName = @"";
  
  CFArrayRef wifiInterfaces = CNCopySupportedInterfaces();
  
  if (wifiInterfaces) {
    
    NSArray *interfaces = (__bridge NSArray *)wifiInterfaces;
    
    for (NSString *interfaceName in interfaces) {
      
      CFDictionaryRef dictRef = CNCopyCurrentNetworkInfo((__bridge CFStringRef)(interfaceName));
      
      if (dictRef) {
        
        NSDictionary *networkInfo = (__bridge NSDictionary *)dictRef;
        
        NSLog(@"网络信息-->%@",networkInfo);
        
        wifiName = [networkInfo objectForKey:(__bridge NSString *)kCNNetworkInfoKeySSID];
        
        CFRelease(dictRef);
        
        break;
      }
      
    }
    
  }
  
  CFRelease(wifiInterfaces);
  
  if (self.resultBlock) {
    
    self.resultBlock(@{@"wifiSsid": wifiName});
  }
  
}

在开发过程中，可能会出现获取SSID为空的情况，但重启手机又可以正常获取了。暂时没有搞明白是什么导致的，如果各路大神有头绪麻烦指点一下