思路：先获取到总的流量信息，然后用当前的总下行流量减去上一秒的下行流量得到网速！
#include <ifaddrs.h>
#include <arpa/inet.h>
#include <net/if.h>
@property (nonatomic, assign)long long int lastBytes;
@property (nonatomic, assign)BOOL isFirstRate;
@property (weak, nonatomic) IBOutlet UILabel *rateLabel;
- (long long) getInterfaceBytes
{
struct ifaddrs *ifa_list = 0, *ifa;
if (getifaddrs(&ifa_list) == -1)
{
return 0;
}
uint32_t iBytes = 0;//下行
uint32_t oBytes = 0;//上行
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(@"\n[getInterfaceBytes-Total]%d,%d",iBytes,oBytes);
return iBytes;
}
- (void)getInternetface {
long long int rate;
long long int currentBytes = [self getInterfaceBytes];
if(self.lastBytes) {
//用上当前的下行总流量减去上一秒的下行流量达到下行速录
rate = currentBytes -self.lastBytes;
}else{
self.isFirstRate=NO;
}
//保存上一秒的下行总流量
self.lastBytes= [self getInterfaceBytes];
//格式化一下
NSString*rateStr = [self formatNetWork:rate];
NSLog(@"当前网速%@",rateStr);
_rateLabel.text = rateStr;
// NSLog(@"hehe:%lld",hehe/1024/1024);
}
- (NSString*)formatNetWork:(long long int)rate {
if(rate <1024) {
return[NSString stringWithFormat:@"%lldB/秒", rate];
}else if(rate >=1024&& rate <1024*1024) {
return[NSString stringWithFormat:@"%.1fKB/秒", (double)rate /1024];
}else if(rate >=1024*1024 && rate <1024*1024*1024){
return[NSString stringWithFormat:@"%.2fMB/秒", (double)rate / (1024*1024)];
}else{
return@"10Kb/秒";
};
}
