在ios上使用wifi特定数据

Question

我想知道即使app没有运行，iOS也可以通过特定的WIFI获取数据。是否有任何API可用于获得结果？

要知道我在代码后使用的总WIFI：

- (NSArray *)getDataCounters
{
    BOOL success;
    struct ifaddrs *addrs;
    const struct ifaddrs *cursor;
    const struct if_data *networkStatisc;

    int WiFiSent = 0;
    int WiFiReceived = 0;
    int WWANSent = 0;
    int WWANReceived = 0;

    NSString *name=[[NSString alloc]init];

    success = getifaddrs(&addrs) == 0;
    if (success)
    {
        cursor = addrs;
        while (cursor != NULL)
        {
            name=[NSString stringWithFormat:@"%s",cursor->ifa_name];
            //NSLog(@"ifa_name %s == %@\n", cursor->ifa_name,name);
            // names of interfaces: en0 is WiFi ,pdp_ip0 is WWAN

            if (cursor->ifa_addr->sa_family == AF_LINK)
            {
                if ([name hasPrefix:@"en"])
                {
                    networkStatisc = (const struct if_data *) cursor->ifa_data;
                    WiFiSent+=networkStatisc->ifi_obytes;
                    WiFiReceived+=networkStatisc->ifi_ibytes;
                    //                    NSLog(@"WiFiSent %d ==%d",WiFiSent,networkStatisc->ifi_obytes);
                    //                    NSLog(@"WiFiReceived %d ==%d",WiFiReceived,networkStatisc->ifi_ibytes);
                }

                if ([name hasPrefix:@"pdp_ip"])
                {
                    networkStatisc = (const struct if_data *) cursor->ifa_data;
                    WWANSent+=networkStatisc->ifi_obytes;
                    WWANReceived+=networkStatisc->ifi_ibytes;
                    //                    NSLog(@"WWANSent %d ==%d",WWANSent,networkStatisc->ifi_obytes);
                    //                    NSLog(@"WWANReceived %d ==%d",WWANReceived,networkStatisc->ifi_ibytes);
                }
            }

            cursor = cursor->ifa_next;
        }

        freeifaddrs(addrs);
    }
    NSLog(@"%@",[NSArray arrayWithObjects:[NSNumber numberWithInt:(WiFiSent)/1000000], [NSNumber numberWithInt:(WiFiReceived)/1000000],[NSNumber numberWithInt:(WWANSent)/1000000],[NSNumber numberWithInt:(WWANReceived)/1000000], nil]);

    return [NSArray arrayWithObjects:[NSNumber numberWithInt:(WiFiSent)/1000000], [NSNumber numberWithInt:(WiFiReceived)/1000000],[NSNumber numberWithInt:(WWANSent)/1000000],[NSNumber numberWithInt:(WWANReceived)/1000000], nil];
}

请帮助我。