Question

我想创建一个应用程序，显示设备上安装的所有应用程序以及有关该应用程序的网络使用情况的信息。有没有关于网络使用的信息？

Answer 1

您自己的应用可以使用下面的代码了解设备的数据量，但是无法知道每个特定应用的使用量。像My Data Manager这样的应用程序曾经为每个应用程序提供细分，但a）不完全准确; b）现在使用iOS 7的时间更长了。还有另一个通过VPN发送数据的应用程序到它的服务器和应用程序商店的屏幕截图使它看起来像每个应用程序可以给出细分，但这是旋转但实际上除了少数几个以及来自用户。基本上，每个应用程序都没有保证准确的方法。

此外，无法保证准确了解所有已安装的应用。有一些机制可以很好地猜测基于数据库安装的内容，但无法确切知道安装的是什么

#include <arpa/inet.h> 
#include <net/if.h> 
#include <ifaddrs.h> 
#include <net/if_dl.h>


- (void) getDataUsage
{
    NSTimeInterval elapsedTime = [[NSDate date] timeIntervalSinceDate: self.timeThatDataMonitoringStarted];
    NSLog(@"********* GETTING DATA USAGE. Elapsed time: %f **************",elapsedTime);
    NSArray *data = [self getDataCounters];

    NSNumber *wifiSentSinceBoot = (NSNumber*)data[0];
    NSNumber *wifiReceivedSinceBoot = (NSNumber*)data[1];
    NSNumber *wwanSentSinceBoot = (NSNumber*)data[2];
    NSNumber *wwanReceivedSinceBoot = (NSNumber*)data[3];

    int wifiSentSinceBootAsInt      = [wifiSentSinceBoot intValue];
    int wifiReceivedSinceBootAsInt  = [wifiReceivedSinceBoot intValue];
    int wWanSentSinceBootAsInt      = [wwanSentSinceBoot intValue];
    int wWanReceivedSinceBootAsInt  = [wwanReceivedSinceBoot intValue];

    static int initialWifiSent;
    static int initialWifiReceived;
    static int initialWWanSent;
    static int initialWWanReceived;
    if (!self.initialDataValuesSet)
    {
        self.initialDataValuesSet    = YES;
        initialWifiSent     = wifiSentSinceBootAsInt;
        initialWifiReceived = wifiReceivedSinceBootAsInt;
        initialWWanSent     = wWanSentSinceBootAsInt;
        initialWWanReceived = wWanReceivedSinceBootAsInt;
    }

    int wifiSentSinceLastRetrieval     = wifiSentSinceBootAsInt - initialWifiSent;
    int wifiReceivedSinceLastRetrieval = wifiReceivedSinceBootAsInt - initialWifiReceived;
    int wWanSentSinceLastRetrieval     = wWanSentSinceBootAsInt - initialWWanSent;
    int wWanReceivedSinceLastRetrieval  = wWanReceivedSinceBootAsInt - initialWWanReceived;

    uint dataUsed = wifiSentSinceLastRetrieval + wifiReceivedSinceLastRetrieval + wWanSentSinceLastRetrieval + wWanReceivedSinceLastRetrieval;
    NSLog(@"Total data: %d", dataUsed);
}


- (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);
    }

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

是否有api获取有关应用程序的网络使用情况的信息？

1 个答案: