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在开发中，有时候需要获取流量统计信息。研究发现：通过函数getifaddrs来得到系统网络接口的信息，网络接口的信息，包含在if_data字段中， 有很多信息， 但我现在只关心ifi_ibytes, ifi_obytes, 应该就是接收到的字节数和发送的字节数, 加起来就是流量了。还发现，接口的名字， 有en, pdp_ip, lo等几种形式，en应该是wifi, pdp_ip大概是3g或者gprs, lo是环回接口, 通过名字区分可以分别统计。
#include <ifaddrs.h> #include <sys/socket.h> #include <net/if.h>
//获取3G或者GPRS的流量 + (NSString *)getGprs3GFlowIOBytes { 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; //3G或者GPRS if (!strcmp(ifa->ifa_name, "pdp_ip0")) { struct if_data *if_data = (struct if_data *)ifa->ifa_data; iBytes += if_data->ifi_ibytes; oBytes += if_data->ifi_obytes; NSLog(@"%s :iBytes is %d, oBytes is %d", ifa->ifa_name, iBytes, oBytes); } } freeifaddrs(ifa_list); uint32_t bytes = 0; bytes = iBytes + oBytes; //将bytes单位转换 if(bytes < 1024) // B { return [NSString stringWithFormat:@"%dB", bytes]; } else if(bytes >= 1024 && bytes < 1024 * 1024) // KB { return [NSString stringWithFormat:@"%.1fKB", (double)bytes / 1024]; } else if(bytes >= 1024 * 1024 && bytes < 1024 * 1024 * 1024) // MB { return [NSString stringWithFormat:@"%.2fMB", (double)bytes / (1024 * 1024)]; } else // GB { return [NSString stringWithFormat:@"%.3fGB", (double)bytes / (1024 * 1024 * 1024)]; } }
//获取Wifi流量 + (NSString *)getGprsWifiFlowIOBytes { 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; //Wifi 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; NSLog(@"%s :iBytes is %d, oBytes is %d", ifa->ifa_name, iBytes, oBytes); } } freeifaddrs(ifa_list); uint32_t bytes = 0; bytes = iBytes+oBytes; NSLog(@"%d",bytes); //将bytes单位转换 if(bytes < 1024) // B { return [NSString stringWithFormat:@"%dB", bytes]; } else if(bytes >= 1024 && bytes < 1024 * 1024) // KB { return [NSString stringWithFormat:@"%.1fKB", (double)bytes / 1024]; } else if(bytes >= 1024 * 1024 && bytes < 1024 * 1024 * 1024) // MB { return [NSString stringWithFormat:@"%.2fMB", (double)bytes / (1024 * 1024)]; } else // GB { return [NSString stringWithFormat:@"%.3fGB", (double)bytes / (1024 * 1024 * 1024)]; } }
注意：1、通过读取系统网络接口信息，获取当前iphone设备的流量相关信息，统计的是上次开机至今的流量信息.
2、上面两方法统计的结果是字符串格式
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原文地址：http://www.cnblogs.com/jukaiit/p/5730228.html
