blocks|key|249202|text|问题是pdp_ip0是其中的一个接口，所有的pdpXXX都是专用于不同功能的WWAN接口，语音信箱，通用网络接口。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|249203|我在Apple论坛上读到:操作系统不会以进程为单位保存网络统计数据。因此，这个问题没有确切的解决方案。但是，您可以获取每个网络接口的网络统计信息。|249204|通常，en0是您的Wi-Fi接口，pdp_ip0是您的WWAN接口。|249205|没有好的方法来获取信息wifi/蜂窝网络数据，因为，特别是日期-时间！|249206|数据统计(ifa_data->ifi_obytes和ifa_data->ifi_ibytes)存储上次设备重新启动时的数据。|249207|我不知道为什么，但是ifi_opackets和ifi_ipackets是为lo0+(我想它的主界面)而显示的。|249208|是。然后设备通过WiFi连接，而不使用互联网，if_iobytes值仍然会出现，因为这种方法提供了网络字节交换，而不仅仅是互联网。|249209|#include+<net/if.h>
#include+<ifaddrs.h>

static+NSString+*const+DataCounterKeyWWANSent+=+@"WWANSent";
static+NSString+*const+DataCounterKeyWWANReceived+=+@"WWANReceived";
static+NSString+*const+DataCounterKeyWiFiSent+=+@"WiFiSent";
static+NSString+*const+DataCounterKeyWiFiReceived+=+@"WiFiReceived";

NSDictionary+*DataCounters()
{
++++struct+ifaddrs+*addrs;
++++const+struct+ifaddrs+*cursor;

++++u_int32_t+WiFiSent+=+0;
++++u_int32_t+WiFiReceived+=+0;
++++u_int32_t+WWANSent+=+0;
++++u_int32_t+WWANReceived+=+0;

++++if+(getifaddrs(&addrs)+==+0)
++++{
++++++++cursor+=+addrs;
++++++++while+(cursor+!=+NULL)
++++++++{
++++++++++++if+(cursor->ifa_addr->sa_family+==+AF_LINK)
++++++++++++{
#ifdef+DEBUG
++++++++++++++++const+struct+if_data+*ifa_data+=+(struct+if_data+*)cursor->ifa_data;
++++++++++++++++if+(ifa_data+!=+NULL)
++++++++++++++++{
++++++++++++++++++++NSLog(@"Interface+name+%25s:+sent+%25tu+received+%25tu",cursor->ifa_name,ifa_data->ifi_obytes,ifa_data->ifi_ibytes);
++++++++++++++++}
#endif

++++++++++++++++//+name+of+interfaces:
++++++++++++++++//+en0+is+WiFi
++++++++++++++++//+pdp_ip0+is+WWAN
++++++++++++++++NSString+*name+=+@(cursor->ifa_name);
++++++++++++++++if+([name+hasPrefix:@"en"])
++++++++++++++++{
++++++++++++++++++++const+struct+if_data+*ifa_data+=+(struct+if_data+*)cursor->ifa_data;
++++++++++++++++++++if+(ifa_data+!=+NULL)
++++++++++++++++++++{
++++++++++++++++++++++++WiFiSent+%2B=+ifa_data->ifi_obytes;
++++++++++++++++++++++++WiFiReceived+%2B=+ifa_data->ifi_ibytes;
++++++++++++++++++++}
++++++++++++++++}

++++++++++++++++if+([name+hasPrefix:@"pdp_ip"])
++++++++++++++++{
++++++++++++++++++++const+struct+if_data+*ifa_data+=+(struct+if_data+*)cursor->ifa_data;
++++++++++++++++++++if+(ifa_data+!=+NULL)
++++++++++++++++++++{
++++++++++++++++++++++++WWANSent+%2B=+ifa_data->ifi_obytes;
++++++++++++++++++++++++WWANReceived+%2B=+ifa_data->ifi_ibytes;
++++++++++++++++++++}
++++++++++++++++}
++++++++++++}

++++++++++++cursor+=+cursor->ifa_next;
++++++++}

++++++++freeifaddrs(addrs);
++++}

++++return+@{DataCounterKeyWiFiSent+:+@(WiFiSent),
+++++++++++++DataCounterKeyWiFiReceived+:+@(WiFiReceived),
+++++++++++++DataCounterKeyWWANSent+:+@(WWANSent),
+++++++++++++DataCounterKeyWWANReceived+:+@(WWANReceived)};
}|code-block|syntax|javascript|249210|改进了对复制/粘贴的支持!|BOLD|249211|entityMap^0|3|7|M|6|12|4|0|0|3|3|9|5|H|7|R|4|0|0|5|K|Q|K|0|A|C|N|C|11|3|0|8|4|N|A|0|0|0|D|0^^$0|@$1|2|3|4|5|6|7|11|8|@$9|12|A|13|B|C]|$9|14|A|15|B|C]|$9|16|A|17|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|18|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|19|8|@$9|1A|A|1B|B|C]|$9|1C|A|1D|B|C]|$9|1E|A|1F|B|C]|$9|1G|A|1H|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|1I|8|@]|D|@]|E|$]]|$1|L|3|M|5|6|7|1J|8|@$9|1K|A|1L|B|C]|$9|1M|A|1N|B|C]]|D|@]|E|$]]|$1|N|3|O|5|6|7|1O|8|@$9|1P|A|1Q|B|C]|$9|1R|A|1S|B|C]|$9|1T|A|1U|B|C]]|D|@]|E|$]]|$1|P|3|Q|5|6|7|1V|8|@$9|1W|A|1X|B|C]|$9|1Y|A|1Z|B|C]]|D|@]|E|$]]|$1|R|3|S|5|T|7|20|8|@]|D|@]|E|$U|V]]|$1|W|3|X|5|6|7|21|8|@$9|22|A|23|B|Y]]|D|@]|E|$]]|$1|Z|3|-4|5|6|7|24|8|@]|D|@]|E|$]]]|10|$]]

The thing is that <code>pdp_ip0</code> is one of interfaces, all <code>pdpXXX</code> are <code>WWAN</code> interfaces dedicated to different functions, voicemail, general networking interface.

I read in Apple forum that :
The OS does not keep network statistics on a process-by-process basis. As such, there's no exact solution to this problem. You can, however, get network statistics for each network interface.

In general <code>en0</code> is your <code>Wi-Fi</code> interface and <code>pdp_ip0</code> is your <code>WWAN</code> interface.

There is no good way to get information wifi/cellular network data since, particular date-time! 

Data statistic (<code>ifa_data-&gt;ifi_obytes</code> and <code>ifa_data-&gt;ifi_ibytes</code>) are stored from previous device reboot. 

I don't know why, but <code>ifi_opackets</code> and <code>ifi_ipackets</code> are shown just for <code>lo0</code> (I think its main interface ).

Yes. Then device is connected via <code>WiFi</code> and doesn't use internet <code>if_iobytes</code> values still come because this method provides network bytes exchanges and not just internet.

<pre><code>#include &lt;net/if.h&gt;
#include &lt;ifaddrs.h&gt;

static NSString *const DataCounterKeyWWANSent = @"WWANSent";
static NSString *const DataCounterKeyWWANReceived = @"WWANReceived";
static NSString *const DataCounterKeyWiFiSent = @"WiFiSent";
static NSString *const DataCounterKeyWiFiReceived = @"WiFiReceived";

NSDictionary *DataCounters()
{
 struct ifaddrs *addrs;
 const struct ifaddrs *cursor;

 u_int32_t WiFiSent = 0;
 u_int32_t WiFiReceived = 0;
 u_int32_t WWANSent = 0;
 u_int32_t WWANReceived = 0;

 if (getifaddrs(&amp;addrs) == 0)
 {
 cursor = addrs;
 while (cursor != NULL)
 {
 if (cursor-&gt;ifa_addr-&gt;sa_family == AF_LINK)
 {
#ifdef DEBUG
 const struct if_data *ifa_data = (struct if_data *)cursor-&gt;ifa_data;
 if (ifa_data != NULL)
 {
 NSLog(@"Interface name %s: sent %tu received %tu",cursor-&gt;ifa_name,ifa_data-&gt;ifi_obytes,ifa_data-&gt;ifi_ibytes);
 }
#endif

 // name of interfaces:
 // en0 is WiFi
 // pdp_ip0 is WWAN
 NSString *name = @(cursor-&gt;ifa_name);
 if ([name hasPrefix:@"en"])
 {
 const struct if_data *ifa_data = (struct if_data *)cursor-&gt;ifa_data;
 if (ifa_data != NULL)
 {
 WiFiSent += ifa_data-&gt;ifi_obytes;
 WiFiReceived += ifa_data-&gt;ifi_ibytes;
 }
 }

 if ([name hasPrefix:@"pdp_ip"])
 {
 const struct if_data *ifa_data = (struct if_data *)cursor-&gt;ifa_data;
 if (ifa_data != NULL)
 {
 WWANSent += ifa_data-&gt;ifi_obytes;
 WWANReceived += ifa_data-&gt;ifi_ibytes;
 }
 }
 }

 cursor = cursor-&gt;ifa_next;
 }

 freeifaddrs(addrs);
 }

 return @{DataCounterKeyWiFiSent : @(WiFiSent),
 DataCounterKeyWiFiReceived : @(WiFiReceived),
 DataCounterKeyWWANSent : @(WWANSent),
 DataCounterKeyWWANReceived : @(WWANReceived)};
}
</code></pre>

Improved copy/paste support !

blocks|key|247539|text|重要的是要理解，这些计数器是自设备上次启动以来提供的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|247540|因此，为了有效地利用它们，您应该将每个样本与设备的正常运行时间一起使用(您可以使用mach_absolute_time()+-有关更多信息，请参阅this+)|CODE|247541|一旦你有了计数器样本%2B正常运行时间，你就可以有更好的启发式数据使用……|247542|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/1450737/what-is-mach-absolute-time-based-on-on-iphone^0|Q|1|0|15|K|21|4|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|V|8|@$9|W|A|X|B|H]]|D|@$9|Y|A|Z|1|10]]|E|$]]|$1|I|3|J|5|6|7|11|8|@]|D|@]|E|$]]|$1|K|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|L|$M|$5|N|O|P|E|$Q|R]]]]

It's important to understand that these counters are provided since the device's last boot.

So, to make effective use of them, you should accompany every sample with the device's uptime (you can use <code>mach_absolute_time()</code> - see <a href="https://stackoverflow.com/questions/1450737/what-is-mach-absolute-time-based-on-on-iphone">this</a> for more information)

Once you have counters samples + uptime you can have better heuristics as to data use...

blocks|key|247547|text|要添加到可接受的答案中，重要的是要认识到接口显示的数据量在每次4+GB后溢出并在0重新启动，特别是当您使用此代码计算两个读数之间的差值时。这是因为ifi_obytes和ifi_ibytes是uint_32，它们的最大值是4294967295。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|247548|另外，我建议对包含发送和接收的数据的变量使用unsigned+int。常规int的最大值是无符号整数的一半，因此在添加ifi_obytes时，可能会导致溢出。|247549|unsigned+int+sent+=+0;
sent+%2B=+networkStatisc->ifi_obytes;|code-block|syntax|javascript|247550|entityMap^0|V|4|14|1|21|A|2C|A|2N|7|32|A|0|M|C|11|3|1N|A|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|11|8|@$9|12|A|13|B|C]|$9|14|A|15|B|C]|$9|16|A|17|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|18|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|19|8|@]|D|@]|E|$]]]|N|$]]

To add to the accepted answer, its important to realize that the amount of data displayed by the interface overflows and restarts at <code>0</code> after every <code>4 GB</code>, especially if you are using this code to calculate the difference between two readings. This is because <code>ifi_obytes</code> and <code>ifi_ibytes</code> are <code>uint_32</code> and their max value is <code>4294967295</code>.

Also, I recommend using <code>unsigned int</code>s for the variables containing the data sent and received. Regular <code>int</code>s have half the max value of an unsigned integer, so when adding <code>ifi_obytes</code>, it may cause an overflow.

<pre><code>unsigned int sent = 0;
sent += networkStatisc-&gt;ifi_obytes;
</code></pre>

blocks|key|2928374|text|公认答案的Swift版本。我还将代码分解为更小的单元。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2928375|struct+DataUsageInfo+{
++++var+wifiReceived:+UInt32+=+0
++++var+wifiSent:+UInt32+=+0
++++var+wirelessWanDataReceived:+UInt32+=+0
++++var+wirelessWanDataSent:+UInt32+=+0

++++mutating+func+updateInfoByAdding(info:+DataUsageInfo)+{
++++++++wifiSent+%2B=+info.wifiSent
++++++++wifiReceived+%2B=+info.wifiReceived
++++++++wirelessWanDataSent+%2B=+info.wirelessWanDataSent
++++++++wirelessWanDataReceived+%2B=+info.wirelessWanDataReceived
++++}
}

class+DataUsage+{

++++private+static+let+wwanInterfacePrefix+=+"pdp_ip"
++++private+static+let+wifiInterfacePrefix+=+"en"

++++class+func+getDataUsage()+->+DataUsageInfo+{
++++++++var+interfaceAddresses:+UnsafeMutablePointer<ifaddrs>+=+nil
++++++++var+dataUsageInfo+=+DataUsageInfo()

++++++++guard+getifaddrs(&interfaceAddresses)+==+0+else+{+return+dataUsageInfo+}

++++++++var+pointer+=+interfaceAddresses
++++++++while+pointer+!=+nil+{
++++++++++++guard+let+info+=+getDataUsageInfo(from:+pointer)+else+{
++++++++++++++++pointer+=+pointer.memory.ifa_next
++++++++++++++++continue
++++++++++++}
++++++++++++dataUsageInfo.updateInfoByAdding(info)
++++++++++++pointer+=+pointer.memory.ifa_next
++++++++}

++++++++freeifaddrs(interfaceAddresses)

++++++++return+dataUsageInfo
++++}

++++private+class+func+getDataUsageInfo(from+infoPointer:+UnsafeMutablePointer<ifaddrs>)+->+DataUsageInfo?+{
++++++++let+pointer+=+infoPointer

++++++++let+name:+String!+=+String.fromCString(infoPointer.memory.ifa_name)

++++++++let+addr+=+pointer.memory.ifa_addr.memory
++++++++guard+addr.sa_family+==+UInt8(AF_LINK)+else+{+return+nil+}

++++++++return+dataUsageInfo(from:+pointer,+name:+name)
++++}

++++private+class+func+dataUsageInfo(from+pointer:+UnsafeMutablePointer<ifaddrs>,+name:+String)+->+DataUsageInfo+{
++++++++var+networkData:+UnsafeMutablePointer<if_data>+=+nil
++++++++var+dataUsageInfo+=+DataUsageInfo()

++++++++if+name.hasPrefix(wifiInterfacePrefix)+{
++++++++++++networkData+=+unsafeBitCast(pointer.memory.ifa_data,+UnsafeMutablePointer<if_data>.self)
++++++++++++dataUsageInfo.wifiSent+%2B=+networkData.memory.ifi_obytes
++++++++++++dataUsageInfo.wifiReceived+%2B=+networkData.memory.ifi_ibytes
++++++++}+else+if+name.hasPrefix(wwanInterfacePrefix)+{
++++++++++++networkData+=+unsafeBitCast(pointer.memory.ifa_data,+UnsafeMutablePointer<if_data>.self)
++++++++++++dataUsageInfo.wirelessWanDataSent+%2B=+networkData.memory.ifi_obytes
++++++++++++dataUsageInfo.wirelessWanDataReceived+%2B=+networkData.memory.ifi_ibytes
++++++++}

++++++++return+dataUsageInfo
++++}
}|code-block|syntax|javascript|2928376|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Swift version of the accepted answer. I also break the code into smaller units.

<pre><code>struct DataUsageInfo {
 var wifiReceived: UInt32 = 0
 var wifiSent: UInt32 = 0
 var wirelessWanDataReceived: UInt32 = 0
 var wirelessWanDataSent: UInt32 = 0

 mutating func updateInfoByAdding(info: DataUsageInfo) {
 wifiSent += info.wifiSent
 wifiReceived += info.wifiReceived
 wirelessWanDataSent += info.wirelessWanDataSent
 wirelessWanDataReceived += info.wirelessWanDataReceived
 }
}

class DataUsage {

 private static let wwanInterfacePrefix = "pdp_ip"
 private static let wifiInterfacePrefix = "en"

 class func getDataUsage() -&gt; DataUsageInfo {
 var interfaceAddresses: UnsafeMutablePointer&lt;ifaddrs&gt; = nil
 var dataUsageInfo = DataUsageInfo()

 guard getifaddrs(&amp;interfaceAddresses) == 0 else { return dataUsageInfo }

 var pointer = interfaceAddresses
 while pointer != nil {
 guard let info = getDataUsageInfo(from: pointer) else {
 pointer = pointer.memory.ifa_next
 continue
 }
 dataUsageInfo.updateInfoByAdding(info)
 pointer = pointer.memory.ifa_next
 }

 freeifaddrs(interfaceAddresses)

 return dataUsageInfo
 }

 private class func getDataUsageInfo(from infoPointer: UnsafeMutablePointer&lt;ifaddrs&gt;) -&gt; DataUsageInfo? {
 let pointer = infoPointer

 let name: String! = String.fromCString(infoPointer.memory.ifa_name)

 let addr = pointer.memory.ifa_addr.memory
 guard addr.sa_family == UInt8(AF_LINK) else { return nil }

 return dataUsageInfo(from: pointer, name: name)
 }

 private class func dataUsageInfo(from pointer: UnsafeMutablePointer&lt;ifaddrs&gt;, name: String) -&gt; DataUsageInfo {
 var networkData: UnsafeMutablePointer&lt;if_data&gt; = nil
 var dataUsageInfo = DataUsageInfo()

 if name.hasPrefix(wifiInterfacePrefix) {
 networkData = unsafeBitCast(pointer.memory.ifa_data, UnsafeMutablePointer&lt;if_data&gt;.self)
 dataUsageInfo.wifiSent += networkData.memory.ifi_obytes
 dataUsageInfo.wifiReceived += networkData.memory.ifi_ibytes
 } else if name.hasPrefix(wwanInterfacePrefix) {
 networkData = unsafeBitCast(pointer.memory.ifa_data, UnsafeMutablePointer&lt;if_data&gt;.self)
 dataUsageInfo.wirelessWanDataSent += networkData.memory.ifi_obytes
 dataUsageInfo.wirelessWanDataReceived += networkData.memory.ifi_ibytes
 }

 return dataUsageInfo
 }
}
</code></pre>

blocks|key|247562|text|我将上面的源代码修复为Swift3版本|type|unstyled|depth|inlineStyleRanges|entityRanges|data|247563|struct+DataUsageInfo+{
++++var+wifiReceived:+UInt32+=+0
++++var+wifiSent:+UInt32+=+0
++++var+wirelessWanDataReceived:+UInt32+=+0
++++var+wirelessWanDataSent:+UInt32+=+0

++++mutating+func+updateInfoByAdding(_+info:+DataUsageInfo)+{
++++++++wifiSent+%2B=+info.wifiSent
++++++++wifiReceived+%2B=+info.wifiReceived
++++++++wirelessWanDataSent+%2B=+info.wirelessWanDataSent
++++++++wirelessWanDataReceived+%2B=+info.wirelessWanDataReceived
++++}
}


class+DataUsage+{

++++private+static+let+wwanInterfacePrefix+=+"pdp_ip"
++++private+static+let+wifiInterfacePrefix+=+"en"

++++class+func+getDataUsage()+->+DataUsageInfo+{
++++++++var+ifaddr:+UnsafeMutablePointer<ifaddrs>?
++++++++var+dataUsageInfo+=+DataUsageInfo()

++++++++guard+getifaddrs(&ifaddr)+==+0+else+{+return+dataUsageInfo+}
++++++++while+let+addr+=+ifaddr+{
++++++++++++guard+let+info+=+getDataUsageInfo(from:+addr)+else+{
++++++++++++++++ifaddr+=+addr.pointee.ifa_next
++++++++++++++++continue
++++++++++++}
++++++++++++dataUsageInfo.updateInfoByAdding(info)
++++++++++++ifaddr+=+addr.pointee.ifa_next
++++++++}

++++++++freeifaddrs(ifaddr)

++++++++return+dataUsageInfo
++++}

++++private+class+func+getDataUsageInfo(from+infoPointer:+UnsafeMutablePointer<ifaddrs>)+->+DataUsageInfo?+{
++++++++let+pointer+=+infoPointer
++++++++let+name:+String!+=+String(cString:+pointer.pointee.ifa_name)
++++++++let+addr+=+pointer.pointee.ifa_addr.pointee
++++++++guard+addr.sa_family+==+UInt8(AF_LINK)+else+{+return+nil+}

++++++++return+dataUsageInfo(from:+pointer,+name:+name)
++++}

++++private+class+func+dataUsageInfo(from+pointer:+UnsafeMutablePointer<ifaddrs>,+name:+String)+->+DataUsageInfo+{
++++++++var+networkData:+UnsafeMutablePointer<if_data>?
++++++++var+dataUsageInfo+=+DataUsageInfo()

++++++++if+name.hasPrefix(wifiInterfacePrefix)+{
++++++++++++networkData+=+unsafeBitCast(pointer.pointee.ifa_data,+to:+UnsafeMutablePointer<if_data>.self)
++++++++++++if+let+data+=+networkData+{
++++++++++++++++dataUsageInfo.wifiSent+%2B=+data.pointee.ifi_obytes
++++++++++++++++dataUsageInfo.wifiReceived+%2B=+data.pointee.ifi_ibytes
++++++++++++}

++++++++}+else+if+name.hasPrefix(wwanInterfacePrefix)+{
++++++++++++networkData+=+unsafeBitCast(pointer.pointee.ifa_data,+to:+UnsafeMutablePointer<if_data>.self)
++++++++++++if+let+data+=+networkData+{
++++++++++++++++dataUsageInfo.wirelessWanDataSent+%2B=+data.pointee.ifi_obytes
++++++++++++++++dataUsageInfo.wirelessWanDataReceived+%2B=+data.pointee.ifi_ibytes
++++++++++++}
++++++++}

++++++++return+dataUsageInfo
++++}
}|code-block|syntax|javascript|247564|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I fixed above source code to Swift3 version

<pre><code>struct DataUsageInfo {
 var wifiReceived: UInt32 = 0
 var wifiSent: UInt32 = 0
 var wirelessWanDataReceived: UInt32 = 0
 var wirelessWanDataSent: UInt32 = 0

 mutating func updateInfoByAdding(_ info: DataUsageInfo) {
 wifiSent += info.wifiSent
 wifiReceived += info.wifiReceived
 wirelessWanDataSent += info.wirelessWanDataSent
 wirelessWanDataReceived += info.wirelessWanDataReceived
 }
}


class DataUsage {

 private static let wwanInterfacePrefix = "pdp_ip"
 private static let wifiInterfacePrefix = "en"

 class func getDataUsage() -&gt; DataUsageInfo {
 var ifaddr: UnsafeMutablePointer&lt;ifaddrs&gt;?
 var dataUsageInfo = DataUsageInfo()

 guard getifaddrs(&amp;ifaddr) == 0 else { return dataUsageInfo }
 while let addr = ifaddr {
 guard let info = getDataUsageInfo(from: addr) else {
 ifaddr = addr.pointee.ifa_next
 continue
 }
 dataUsageInfo.updateInfoByAdding(info)
 ifaddr = addr.pointee.ifa_next
 }

 freeifaddrs(ifaddr)

 return dataUsageInfo
 }

 private class func getDataUsageInfo(from infoPointer: UnsafeMutablePointer&lt;ifaddrs&gt;) -&gt; DataUsageInfo? {
 let pointer = infoPointer
 let name: String! = String(cString: pointer.pointee.ifa_name)
 let addr = pointer.pointee.ifa_addr.pointee
 guard addr.sa_family == UInt8(AF_LINK) else { return nil }

 return dataUsageInfo(from: pointer, name: name)
 }

 private class func dataUsageInfo(from pointer: UnsafeMutablePointer&lt;ifaddrs&gt;, name: String) -&gt; DataUsageInfo {
 var networkData: UnsafeMutablePointer&lt;if_data&gt;?
 var dataUsageInfo = DataUsageInfo()

 if name.hasPrefix(wifiInterfacePrefix) {
 networkData = unsafeBitCast(pointer.pointee.ifa_data, to: UnsafeMutablePointer&lt;if_data&gt;.self)
 if let data = networkData {
 dataUsageInfo.wifiSent += data.pointee.ifi_obytes
 dataUsageInfo.wifiReceived += data.pointee.ifi_ibytes
 }

 } else if name.hasPrefix(wwanInterfacePrefix) {
 networkData = unsafeBitCast(pointer.pointee.ifa_data, to: UnsafeMutablePointer&lt;if_data&gt;.self)
 if let data = networkData {
 dataUsageInfo.wirelessWanDataSent += data.pointee.ifi_obytes
 dataUsageInfo.wirelessWanDataReceived += data.pointee.ifi_ibytes
 }
 }

 return dataUsageInfo
 }
}
</code></pre>

blocks|key|2928407|text|基于以前版本的新版本，但适用于Swift4和Xcode9|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2928408|struct+DataUsageInfo+{
++++var+wifiReceived:+UInt32+=+0
++++var+wifiSent:+UInt32+=+0
++++var+wirelessWanDataReceived:+UInt32+=+0
++++var+wirelessWanDataSent:+UInt32+=+0

++++mutating+func+updateInfoByAdding(info:+DataUsageInfo)+{
++++++++wifiSent+%2B=+info.wifiSent
++++++++wifiReceived+%2B=+info.wifiReceived
++++++++wirelessWanDataSent+%2B=+info.wirelessWanDataSent
++++++++wirelessWanDataReceived+%2B=+info.wirelessWanDataReceived
++++}
}

class+DataUsage+{

++++private+static+let+wwanInterfacePrefix+=+"pdp_ip"
++++private+static+let+wifiInterfacePrefix+=+"en"

++++class+func+getDataUsage()+->+DataUsageInfo+{
++++++++var+interfaceAddresses:+UnsafeMutablePointer<ifaddrs>?+=+nil

++++++++var+dataUsageInfo+=+DataUsageInfo()

++++++++guard+getifaddrs(&interfaceAddresses)+==+0+else+{+return+dataUsageInfo+}

++++++++var+pointer+=+interfaceAddresses
++++++++while+pointer+!=+nil+{
++++++++++++guard+let+info+=+getDataUsageInfo(from:+pointer!)+else+{
++++++++++++++++pointer+=+pointer!.pointee.ifa_next
++++++++++++++++continue
++++++++++++}
++++++++++++dataUsageInfo.updateInfoByAdding(info:+info)
++++++++++++pointer+=+pointer!.pointee.ifa_next
++++++++}

++++++++freeifaddrs(interfaceAddresses)

++++++++return+dataUsageInfo
++++}

++++private+class+func+getDataUsageInfo(from+infoPointer:+UnsafeMutablePointer<ifaddrs>)+->+DataUsageInfo?+{
++++++++let+pointer+=+infoPointer

++++++++let+name:+String!+=+String(cString:+infoPointer.pointee.ifa_name)
++++++++let+addr+=+pointer.pointee.ifa_addr.pointee
++++++++guard+addr.sa_family+==+UInt8(AF_LINK)+else+{+return+nil+}

++++++++return+dataUsageInfo(from:+pointer,+name:+name)
++++}

++++private+class+func+dataUsageInfo(from+pointer:+UnsafeMutablePointer<ifaddrs>,+name:+String)+->+DataUsageInfo+{
++++++++var+networkData:+UnsafeMutablePointer<if_data>?+=+nil
++++++++var+dataUsageInfo+=+DataUsageInfo()

++++++++if+name.hasPrefix(wifiInterfacePrefix)+{
++++++++++++networkData+=+unsafeBitCast(pointer.pointee.ifa_data,+to:+UnsafeMutablePointer<if_data>.self)
++++++++++++dataUsageInfo.wifiSent+%2B=+networkData?.pointee.ifi_obytes+??+0
++++++++++++dataUsageInfo.wifiReceived+%2B=+networkData?.pointee.ifi_ibytes+??+0
++++++++}+else+if+name.hasPrefix(wwanInterfacePrefix)+{
++++++++++++networkData+=+unsafeBitCast(pointer.pointee.ifa_data,+to:+UnsafeMutablePointer<if_data>.self)
++++++++++++dataUsageInfo.wirelessWanDataSent+%2B=+networkData?.pointee.ifi_obytes+??+0
++++++++++++dataUsageInfo.wirelessWanDataReceived+%2B=+networkData?.pointee.ifi_ibytes+??+0
++++++++}

++++++++return+dataUsageInfo
++++}
}|code-block|syntax|javascript|2928409|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

A new version about based on previous versions, but adapted for Swift4 and Xcode 9

<pre><code>struct DataUsageInfo {
 var wifiReceived: UInt32 = 0
 var wifiSent: UInt32 = 0
 var wirelessWanDataReceived: UInt32 = 0
 var wirelessWanDataSent: UInt32 = 0

 mutating func updateInfoByAdding(info: DataUsageInfo) {
 wifiSent += info.wifiSent
 wifiReceived += info.wifiReceived
 wirelessWanDataSent += info.wirelessWanDataSent
 wirelessWanDataReceived += info.wirelessWanDataReceived
 }
}

class DataUsage {

 private static let wwanInterfacePrefix = "pdp_ip"
 private static let wifiInterfacePrefix = "en"

 class func getDataUsage() -&gt; DataUsageInfo {
 var interfaceAddresses: UnsafeMutablePointer&lt;ifaddrs&gt;? = nil

 var dataUsageInfo = DataUsageInfo()

 guard getifaddrs(&amp;interfaceAddresses) == 0 else { return dataUsageInfo }

 var pointer = interfaceAddresses
 while pointer != nil {
 guard let info = getDataUsageInfo(from: pointer!) else {
 pointer = pointer!.pointee.ifa_next
 continue
 }
 dataUsageInfo.updateInfoByAdding(info: info)
 pointer = pointer!.pointee.ifa_next
 }

 freeifaddrs(interfaceAddresses)

 return dataUsageInfo
 }

 private class func getDataUsageInfo(from infoPointer: UnsafeMutablePointer&lt;ifaddrs&gt;) -&gt; DataUsageInfo? {
 let pointer = infoPointer

 let name: String! = String(cString: infoPointer.pointee.ifa_name)
 let addr = pointer.pointee.ifa_addr.pointee
 guard addr.sa_family == UInt8(AF_LINK) else { return nil }

 return dataUsageInfo(from: pointer, name: name)
 }

 private class func dataUsageInfo(from pointer: UnsafeMutablePointer&lt;ifaddrs&gt;, name: String) -&gt; DataUsageInfo {
 var networkData: UnsafeMutablePointer&lt;if_data&gt;? = nil
 var dataUsageInfo = DataUsageInfo()

 if name.hasPrefix(wifiInterfacePrefix) {
 networkData = unsafeBitCast(pointer.pointee.ifa_data, to: UnsafeMutablePointer&lt;if_data&gt;.self)
 dataUsageInfo.wifiSent += networkData?.pointee.ifi_obytes ?? 0
 dataUsageInfo.wifiReceived += networkData?.pointee.ifi_ibytes ?? 0
 } else if name.hasPrefix(wwanInterfacePrefix) {
 networkData = unsafeBitCast(pointer.pointee.ifa_data, to: UnsafeMutablePointer&lt;if_data&gt;.self)
 dataUsageInfo.wirelessWanDataSent += networkData?.pointee.ifi_obytes ?? 0
 dataUsageInfo.wirelessWanDataReceived += networkData?.pointee.ifi_ibytes ?? 0
 }

 return dataUsageInfo
 }
}
</code></pre>

blocks|key|3142997|text|很抱歉再次回答相同的问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3142998|但是我发现UInt32是不够的，所以当它变得太大时就会崩溃。|3142999|我刚刚把UInt32改成了UInt64，它工作得很好。|3143000|struct+DataUsageInfo+{
++++var+wifiReceived:+UInt64+=+0
++++var+wifiSent:+UInt64+=+0
++++var+wirelessWanDataReceived:+UInt64+=+0
++++var+wirelessWanDataSent:+UInt64+=+0

++++mutating+func+updateInfoByAdding(info:+DataUsageInfo)+{
++++++++wifiSent+%2B=+info.wifiSent
++++++++wifiReceived+%2B=+info.wifiReceived
++++++++wirelessWanDataSent+%2B=+info.wirelessWanDataSent
++++++++wirelessWanDataReceived+%2B=+info.wirelessWanDataReceived
++++}
}

class+DataUsage+{

++++private+static+let+wwanInterfacePrefix+=+"pdp_ip"
++++private+static+let+wifiInterfacePrefix+=+"en"

++++class+func+getDataUsage()+->+DataUsageInfo+{
++++++++var+interfaceAddresses:+UnsafeMutablePointer<ifaddrs>?+=+nil

++++++++var+dataUsageInfo+=+DataUsageInfo()

++++++++guard+getifaddrs(&interfaceAddresses)+==+0+else+{+return+dataUsageInfo+}

++++++++var+pointer+=+interfaceAddresses
++++++++while+pointer+!=+nil+{
++++++++++++guard+let+info+=+getDataUsageInfo(from:+pointer!)+else+{
++++++++++++++++pointer+=+pointer!.pointee.ifa_next
++++++++++++++++continue
++++++++++++}
++++++++++++dataUsageInfo.updateInfoByAdding(info:+info)
++++++++++++pointer+=+pointer!.pointee.ifa_next
++++++++}

++++++++freeifaddrs(interfaceAddresses)

++++++++return+dataUsageInfo
++++}

++++private+class+func+getDataUsageInfo(from+infoPointer:+UnsafeMutablePointer<ifaddrs>)+->+DataUsageInfo?+{
++++++++let+pointer+=+infoPointer

++++++++let+name:+String!+=+String(cString:+infoPointer.pointee.ifa_name)
++++++++let+addr+=+pointer.pointee.ifa_addr.pointee
++++++++guard+addr.sa_family+==+UInt8(AF_LINK)+else+{+return+nil+}

++++++++return+dataUsageInfo(from:+pointer,+name:+name)
++++}

++++private+class+func+dataUsageInfo(from+pointer:+UnsafeMutablePointer<ifaddrs>,+name:+String)+->+DataUsageInfo+{
++++++++var+networkData:+UnsafeMutablePointer<if_data>?+=+nil
++++++++var+dataUsageInfo+=+DataUsageInfo()

++++++++if+name.hasPrefix(wifiInterfacePrefix)+{
++++++++++++networkData+=+unsafeBitCast(pointer.pointee.ifa_data,+to:+UnsafeMutablePointer<if_data>.self)
++++++++++++dataUsageInfo.wifiSent+%2B=+UInt64(networkData?.pointee.ifi_obytes+??+0)
++++++++++++dataUsageInfo.wifiReceived+%2B=+UInt64(networkData?.pointee.ifi_ibytes+??+0)
++++++++}+else+if+name.hasPrefix(wwanInterfacePrefix)+{
++++++++++++networkData+=+unsafeBitCast(pointer.pointee.ifa_data,+to:+UnsafeMutablePointer<if_data>.self)
++++++++++++dataUsageInfo.wirelessWanDataSent+%2B=+UInt64(networkData?.pointee.ifi_obytes+??+0)
++++++++++++dataUsageInfo.wirelessWanDataReceived+%2B=+UInt64(networkData?.pointee.ifi_ibytes+??+0)
++++++++}

++++++++return+dataUsageInfo
++++}
}|code-block|syntax|javascript|3143001|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|O|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|P|8|@]|9|@]|A|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Sorry for same answer again.

but I found that UInt32 is not enough, so it crashes when it became too big.

I just changed UInt32 to UInt64 and it works fine.

<pre><code>struct DataUsageInfo {
 var wifiReceived: UInt64 = 0
 var wifiSent: UInt64 = 0
 var wirelessWanDataReceived: UInt64 = 0
 var wirelessWanDataSent: UInt64 = 0

 mutating func updateInfoByAdding(info: DataUsageInfo) {
 wifiSent += info.wifiSent
 wifiReceived += info.wifiReceived
 wirelessWanDataSent += info.wirelessWanDataSent
 wirelessWanDataReceived += info.wirelessWanDataReceived
 }
}

class DataUsage {

 private static let wwanInterfacePrefix = "pdp_ip"
 private static let wifiInterfacePrefix = "en"

 class func getDataUsage() -&gt; DataUsageInfo {
 var interfaceAddresses: UnsafeMutablePointer&lt;ifaddrs&gt;? = nil

 var dataUsageInfo = DataUsageInfo()

 guard getifaddrs(&amp;interfaceAddresses) == 0 else { return dataUsageInfo }

 var pointer = interfaceAddresses
 while pointer != nil {
 guard let info = getDataUsageInfo(from: pointer!) else {
 pointer = pointer!.pointee.ifa_next
 continue
 }
 dataUsageInfo.updateInfoByAdding(info: info)
 pointer = pointer!.pointee.ifa_next
 }

 freeifaddrs(interfaceAddresses)

 return dataUsageInfo
 }

 private class func getDataUsageInfo(from infoPointer: UnsafeMutablePointer&lt;ifaddrs&gt;) -&gt; DataUsageInfo? {
 let pointer = infoPointer

 let name: String! = String(cString: infoPointer.pointee.ifa_name)
 let addr = pointer.pointee.ifa_addr.pointee
 guard addr.sa_family == UInt8(AF_LINK) else { return nil }

 return dataUsageInfo(from: pointer, name: name)
 }

 private class func dataUsageInfo(from pointer: UnsafeMutablePointer&lt;ifaddrs&gt;, name: String) -&gt; DataUsageInfo {
 var networkData: UnsafeMutablePointer&lt;if_data&gt;? = nil
 var dataUsageInfo = DataUsageInfo()

 if name.hasPrefix(wifiInterfacePrefix) {
 networkData = unsafeBitCast(pointer.pointee.ifa_data, to: UnsafeMutablePointer&lt;if_data&gt;.self)
 dataUsageInfo.wifiSent += UInt64(networkData?.pointee.ifi_obytes ?? 0)
 dataUsageInfo.wifiReceived += UInt64(networkData?.pointee.ifi_ibytes ?? 0)
 } else if name.hasPrefix(wwanInterfacePrefix) {
 networkData = unsafeBitCast(pointer.pointee.ifa_data, to: UnsafeMutablePointer&lt;if_data&gt;.self)
 dataUsageInfo.wirelessWanDataSent += UInt64(networkData?.pointee.ifi_obytes ?? 0)
 dataUsageInfo.wirelessWanDataReceived += UInt64(networkData?.pointee.ifi_ibytes ?? 0)
 }

 return dataUsageInfo
 }
}
</code></pre>

I've searched over this topic but found very few details which were helpful. With these details I've tried to cook some code as follows.

Note: Please compare the details shared in this post with other posts before marking this as DUPLICATE, and not just by the subject.

<pre><code>- (NSArray *)getDataCountersForType:(int)type {
 BOOL success;
 struct ifaddrs *addrs = nil;
 const struct ifaddrs *cursor = nil;
 const struct sockaddr_dl *dlAddr = nil;
 const struct if_data *networkStatisc = nil; 

 int dataSent = 0;
 int dataReceived = 0;

 success = getifaddrs(&amp;addrs) == 0;
 if (success) {
 cursor = addrs;
 while (cursor != NULL) {
 if (cursor-&gt;ifa_addr-&gt;sa_family == AF_LINK) {
 dlAddr = (const struct sockaddr_dl *) cursor-&gt;ifa_addr;
 networkStatisc = (const struct if_data *) cursor-&gt;ifa_data;

 if (type == WiFi) {
 dataSent += networkStatisc-&gt;ifi_opackets;
 dataReceived += networkStatisc-&gt;ifi_ipackets; 
 }
 else if (type == WWAN) {
 dataSent += networkStatisc-&gt;ifi_obytes;
 dataReceived += networkStatisc-&gt;ifi_ibytes; 
 }
 }
 cursor = cursor-&gt;ifa_next;
 }
 freeifaddrs(addrs);
 } 
 return [NSArray arrayWithObjects:[NSNumber numberWithInt:dataSent], [NSNumber numberWithInt:dataReceived], nil]; 
}
</code></pre>

This code collects information of internet usage of an iPhone device (and not my application alone). 

Now, if I use internet through WiFi or through 3G, I get the the data (bytes) only in <code>ifi_obytes</code> (sent) and <code>ifi_ibytes</code> (received) but I think I should get WiFi usage in <code>ifi_opackets</code> and <code>ifi_ipackets</code>.

Also wanted to add that if I'm connected to a WiFi network, but am not using internet, I still get value added to <code>ifi_obytes</code> and <code>ifi_ibytes</code>.

May be I'm wrong in the implementation or understanding. Need someone to help me out.

<hr>

Edit: Instead of <code>AF_LINK</code> I tried <code>AF_INET</code> (<code>sockaddr_in</code> instead of <code>sockaddr_dl</code>). This crashes the application.

iPhone Data Usage Tracking/Monitoring

Swift

我已经搜索了这个主题，但发现很少有帮助的细节。有了这些细节，我试着编写一些代码，如下所示。注意:在将本文标记为重复之前，请将此帖子中共享的详细信息与其他帖子进行比较，而不仅仅是按主题进行比较。- (NSArray *)getDataCountersForType:(int)type {    BOOL success;...

问iPhone数据使用情况跟踪/监控
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