DataFlowStatistics

java.lang.Object
- ohos.net.DataFlowStatistics

```
public class DataFlowStatistics
extends Object
```
Obtains traffic statistics.
This class provides interfaces to query overall traffic statistics and traffic statistics of the specified cellular network, application, and NIC.

从以下版本开始:

2

构造器概要

构造器
构造器说明

DataFlowStatistics()

构造器
构造器	说明
`DataFlowStatistics()`

方法概要

所有方法静态方法具体方法
限定符和类型	方法	说明
`static void`	`addOperation(int operations)`	Adds a specified number of networks for the `DataFlowStatistics` object of this thread.
`static void`	`addOperation(int tag, int operations)`	Adds a specified number of networks for a given `DataFlowStatistics` tag.
`static void`	`clearDataFlowTag()`	Clears the `DataFlowStatistics` tag of this thread.
`static long`	`getAllRxBytes()`	Queries the data traffic (including all TCP and UDP data packets) received through all NICs.
`static long`	`getAllTxBytes()`	Queries the data traffic (including all TCP and UDP data packets) sent through all NICs.
`static long`	`getCellularRxBytes()`	Queries the data traffic (including all TCP and UDP data packets) received through the cellular network.
`static long`	`getCellularTxBytes()`	Queries the data traffic (including all TCP and UDP data packets) sent through the cellular network.
`static int`	`getDataFlowTag()`	Obtains the `DataFlowStatistics` tag of this thread.
`static long`	`getIfaceRxBytes(String nic)`	Queries the data traffic (including all TCP and UDP data packets) received through a specified NIC.
`static long`	`getIfaceTxBytes(String nic)`	Queries the data traffic (including all TCP and UDP data packets) sent through a specified NIC.
`static long`	`getUidRxBytes(int uid)`	Queries the data traffic (including all TCP and UDP data packets) received by a specified application.
`static long`	`getUidTxBytes(int uid)`	Queries the data traffic (including all TCP and UDP data packets) sent by a specified application.
`static void`	`removeDatagramSocketTag(DatagramSocket socket)`	Removes a specified datagram socket from the `DataFlowStatistics` tag of this thread.
`static void`	`removeSocketTag(Socket socket)`	Removes a specified socket from the `DataFlowStatistics` tag of this thread.
`static void`	`setDataFlowTag(int tag)`	Sets a `DataFlowStatistics` tag for this thread.
`static void`	`setDatagramSocketTag(DatagramSocket socket)`	Sets a specified datagram socket for the `DataFlowStatistics` tag of this thread.
`static void`	`setSocketTag(Socket socket)`	Sets a specified socket for the `DataFlowStatistics` tag of this thread.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 构造器详细资料
  - DataFlowStatistics
```
public DataFlowStatistics()
```
- 方法详细资料
  - getCellularRxBytes
```
public static long getCellularRxBytes()
```
    Queries the data traffic (including all TCP and UDP data packets) received through the cellular network.
    
    返回:
    
    Returns the data traffic received through the cellular network.
    
    从以下版本开始:
    
    2
  - getCellularTxBytes
```
public static long getCellularTxBytes()
```
    Queries the data traffic (including all TCP and UDP data packets) sent through the cellular network.
    
    返回:
    
    Returns the data traffic sent through the cellular network.
    
    从以下版本开始:
    
    2
  - getAllRxBytes
```
public static long getAllRxBytes()
```
    Queries the data traffic (including all TCP and UDP data packets) received through all NICs.
    
    返回:
    
    Returns the data traffic received through all NICs.
    
    从以下版本开始:
    
    2
  - getAllTxBytes
```
public static long getAllTxBytes()
```
    Queries the data traffic (including all TCP and UDP data packets) sent through all NICs.
    
    返回:
    
    Returns the data traffic sent through all NICs.
    
    从以下版本开始:
    
    2
  - getUidRxBytes
```
public static long getUidRxBytes(int uid)
```
    Queries the data traffic (including all TCP and UDP data packets) received by a specified application. This method applies only to system applications and your own applications.
    
    参数:
    
    uid - Indicates the process ID of the application.
    
    返回:
    
    Returns the data traffic received by the specified application.
    
    从以下版本开始:
    
    2
  - getUidTxBytes
```
public static long getUidTxBytes(int uid)
```
    Queries the data traffic (including all TCP and UDP data packets) sent by a specified application. This method applies only to system applications and your own applications.
    
    参数:
    
    uid - Indicates the process ID of the application.
    
    返回:
    
    Returns the data traffic sent by the specified application.
    
    从以下版本开始:
    
    2
  - getIfaceRxBytes
```
public static long getIfaceRxBytes(String nic)
```
    Queries the data traffic (including all TCP and UDP data packets) received through a specified NIC.
    
    参数:
    
    nic - Indicates the NIC name.
    
    返回:
    
    Returns the data traffic received through the specified NIC.
    
    从以下版本开始:
    
    2
  - getIfaceTxBytes
```
public static long getIfaceTxBytes(String nic)
```
    Queries the data traffic (including all TCP and UDP data packets) sent through a specified NIC.
    
    参数:
    
    nic - Indicates the NIC name.
    
    返回:
    
    Returns the data traffic sent through the specified NIC.
    
    从以下版本开始:
    
    2
  - clearDataFlowTag
```
public static void clearDataFlowTag()
```
    Clears the DataFlowStatistics tag of this thread.
    
    从以下版本开始:
    
    4
  - getDataFlowTag
```
public static int getDataFlowTag()
```
    Obtains the DataFlowStatistics tag of this thread.
    
    返回:
    
    Returns the DataFlowStatistics tag.
    
    从以下版本开始:
    
    4
  - addOperation
```
public static void addOperation(int operations)
```
    Adds a specified number of networks for the DataFlowStatistics object of this thread.
    
    参数:
    
    operations - Indicates the number of networks to add.
    
    从以下版本开始:
    
    4
  - addOperation
```
public static void addOperation(int tag,
                                int operations)
```
    Adds a specified number of networks for a given DataFlowStatistics tag.
    
    参数:
    
    tag - Indicates the given DataFlowStatistics tag.
    
    operations - Indicates the number of networks to add.
    
    从以下版本开始:
    
    4
  - setDataFlowTag
```
public static void setDataFlowTag(int tag)
```
    Sets a DataFlowStatistics tag for this thread.
    
    参数:
    
    tag - Indicates the DataFlowStatistics tag to set.
    
    从以下版本开始:
    
    4
  - setDatagramSocketTag
```
public static void setDatagramSocketTag(DatagramSocket socket)
                                 throws SocketException
```
    Sets a specified datagram socket for the DataFlowStatistics tag of this thread.
    
    参数:
    
    socket - Indicates the datagram socket to set.
    
    抛出:
    
    SocketException - Throws this exception if the setting fails.
    
    从以下版本开始:
    
    4
  - setSocketTag
```
public static void setSocketTag(Socket socket)
                         throws SocketException
```
    Sets a specified socket for the DataFlowStatistics tag of this thread.
    
    参数:
    
    socket - Indicates the socket to set.
    
    抛出:
    
    SocketException - Throws this exception if the setting fails.
    
    从以下版本开始:
    
    4
  - removeDatagramSocketTag
```
public static void removeDatagramSocketTag(DatagramSocket socket)
                                    throws SocketException
```
    Removes a specified datagram socket from the DataFlowStatistics tag of this thread.
    
    参数:
    
    socket - Indicates the datagram socket to remove.
    
    抛出:
    
    SocketException - Throws this exception if the setting fails.
    
    从以下版本开始:
    
    4
  - removeSocketTag
```
public static void removeSocketTag(Socket socket)
                            throws SocketException
```
    Removes a specified socket from the DataFlowStatistics tag of this thread.
    
    参数:
    
    socket - Indicates the socket to remove.
    
    抛出:
    
    SocketException - Throws this exception if the setting fails.
    
    从以下版本开始:
    
    4

类 DataFlowStatistics

构造器概要

方法概要

从类继承的方法 java.lang.Object

构造器详细资料

DataFlowStatistics

方法详细资料

getCellularRxBytes

getCellularTxBytes

getAllRxBytes

getAllTxBytes

getUidRxBytes

getUidTxBytes

getIfaceRxBytes

getIfaceTxBytes

clearDataFlowTag

getDataFlowTag

addOperation

addOperation

setDataFlowTag

setDatagramSocketTag

setSocketTag

removeDatagramSocketTag

removeSocketTag