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我使用以下方法检查我的用户数据消耗,取自here。它大部分时间都运行良好,但对于某些用户来说,它会返回负值。换句话说,WWANReceived
是否定的。iPhone上的负值数据使用情况?
这怎么可能?有没有修复?
+ (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];
// getifmaddrs
success = getifaddrs(&addrs) == 0;
if (success)
{
cursor = addrs;
while (cursor != NULL)
{
name = [NSString stringWithFormat:@"%s",cursor->ifa_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;
}
if ([name hasPrefix:@"pdp_ip"])
{
networkStatisc = (const struct if_data *) cursor->ifa_data;
WWANSent += networkStatisc->ifi_obytes;
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];
}
谢谢@ jab11,我会给它一个镜头。 – Eddy 2014-11-17 10:31:25
从堆栈溢出的肠子中复活... 哪些变量你必须从int变为long long,并且它有效吗?如果是的话,你应该接受答案! – Amos 2015-04-29 03:21:22
@Amos里面的所有四个int变量都应该是long long类型的。同时返回的NSNumber应该用numberWithLongLong:calls创建。 – jab11 2015-04-30 10:18:21