iOS 获取当前网络速度 (kb/s) - OC 代码示例

以下是 iOS 开发中获取当前网速的 OC 代码：

#import <UIKit/UIKit.h>
#include <arpa/inet.h>
#include <ifaddrs.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/sysctl.h>
#include <net/if_dl.h>

@interface NetworkSpeedMonitor : NSObject

@property (nonatomic, assign) uint32_t iBytes;
@property (nonatomic, assign) uint32_t oBytes;
@property (nonatomic, assign) uint32_t allFlow;

@property (nonatomic, assign) uint32_t lastiBytes;
@property (nonatomic, assign) uint32_t lastoBytes;
@property (nonatomic, assign) uint32_t lastAllFlow;

@property (nonatomic, strong) NSTimer *timer;

@end

@implementation NetworkSpeedMonitor

// 获取设备网速
- (NSString *)getNetSpeed {
    struct ifaddrs *ifa_list = 0, *ifa;
    if (getifaddrs(&ifa_list) == -1) {
        return '0 kb/s';
    }
    
    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;
        }
        
        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);
    
    uint32_t currentAllFlow = iBytes + oBytes;
    uint32_t speed = currentAllFlow - self.lastAllFlow;
    self.lastAllFlow = currentAllFlow;
    
    NSString *speedString = [NSString stringWithFormat:'%d kb/s', speed/1024];
    return speedString;
}

// 开始监测网速
- (void)startMonitoring {
    self.timer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(updateNetSpeed) userInfo:nil repeats:YES];
}

// 停止监测网速
- (void)stopMonitoring {
    [self.timer invalidate];
    self.timer = nil;
}

// 更新网速
- (void)updateNetSpeed {
    NSString *speedString = [self getNetSpeed];
    NSLog('当前网速：%@', speedString);
}

@end

你可以使用NetworkSpeedMonitor类来获取当前的网速。使用startMonitoring方法开始监测网速，使用stopMonitoring方法停止监测网速。在updateNetSpeed方法中可以实时获取当前的网速，你可以根据自己的需求进行处理。