开发中用到获取网速的地方，应该就两种：
1、下载速度，这种可以直接在接受数据的地方统计计算。这个就不讲了。
2、获取手机网卡的数据，可以监控网卡的进出流量，下面就是。
#import "ViewController.h"
#include <ifaddrs.h>
#include <arpa/inet.h>
#include <net/if.h>
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(getInternetface) userInfo:nil repeats:YES];
[timer fireDate];
}
- (void)getInternetface {
long long hehe = [self getInterfaceBytes];
NSLog(@"hehe:%lld",hehe);
}
/*获取网络流量信息*/
- (long long) getInterfaceBytes
{
struct ifaddrs *ifa_list = 0, *ifa;
if (getifaddrs(&ifa_list) == -1)
{
return 0;
}
uint32_t iBytes = 0;
uint32_t oBytes = 0;
for (ifa = ifa_list; ifa; ifa = ifa->ifa_next)
{
if (AF_LINK != ifa->ifa_addr->sa_family)
continue;
if (!(ifa->ifa_flags & IFF_UP) && !(ifa->ifa_flags & IFF_RUNNING))
continue;
if (ifa->ifa_data == 0)
continue;
/* Not a loopback device. */
if (strncmp(ifa->ifa_name, "lo", 2))
{
struct if_data *if_data = (struct if_data *)ifa->ifa_data;
iBytes += if_data->ifi_ibytes;
oBytes += if_data->ifi_obytes;
}
}
freeifaddrs(ifa_list);
NSLog(@" [getInterfaceBytes-Total]%d,%d",iBytes,oBytes);
return iBytes + oBytes;
}
@end