Courier

java.lang.Object
- ohos.eventhandler.Courier

所有已实现的接口:

Sequenceable

直接已知子类:

CourierEx
```
public class Courier
extends Object
implements Sequenceable
```
Represents a reference to a specific event handler. This class implements inter-process communication (IPC) based on InnerEvent objects by creating a Courier that points to a specific event handler in a process and handing the Courier to another process.

从以下版本开始:

3

嵌套类概要
- 从接口继承的嵌套类/接口 ohos.utils.Sequenceable
  Sequenceable.Producer<T>

字段概要

字段
限定符和类型字段说明

static Sequenceable.Producer<Courier> PRODUCER
Creates a Courier instance from a Parcel.

字段
限定符和类型	字段	说明
`static Sequenceable.Producer<Courier>`	`PRODUCER`	Creates a `Courier` instance from a `Parcel`.

构造器概要

构造器
构造器	说明
`Courier(EventHandler eventHandler)`	A constructor used to create a `Courier` instance based on the given `EventHandler`.
`Courier(IRemoteObject remote)`	A constructor used to create a `Courier` instance based on the given `IRemoteObject`.

方法概要

所有方法实例方法具体方法
限定符和类型	方法	说明
`boolean`	`equals(Object other)`	Indicates whether some other object is "equal to" this one.
`IRemoteObject`	`getRemoteObject()`	Obtains the `IRemoteObject` object used by this `Courier` to communicate with its `EventHandler`.
`int`	`hashCode()`	Returns a hash code value for the object.
`boolean`	`marshalling(Parcel out)`	Marshals this `Sequenceable` object into a `Parcel`.
`void`	`send(InnerEvent innerEvent)`	Sends an `InnerEvent` to this `Courier` for IPC.
`boolean`	`unmarshalling(Parcel in)`	Unmarshals this `Sequenceable` object from a `Parcel`.

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

从接口继承的方法 ohos.utils.Sequenceable
hasFileDescriptor

- 字段详细资料
  - PRODUCER
```
public static final Sequenceable.Producer<Courier> PRODUCER
```
    Creates a Courier instance from a Parcel.
    
    从以下版本开始:
    
    4
- 构造器详细资料
  - Courier
```
public Courier(EventHandler eventHandler)
```
    A constructor used to create a Courier instance based on the given EventHandler.
    
    参数:
    
    eventHandler - Indicates the EventHandler object that will receive inner events.
    
    从以下版本开始:
    
    3
  - Courier
```
public Courier(IRemoteObject remote)
```
    A constructor used to create a Courier instance based on the given IRemoteObject.
    
    参数:
    
    remote - Indicates the IRemoteObject object associated with this Courier.
    
    从以下版本开始:
    
    3
- 方法详细资料
  - send
```
public void send(InnerEvent innerEvent)
          throws RemoteException
```
    Sends an InnerEvent to this Courier for IPC.
    
    参数:
    
    innerEvent - Indicates the InnerEvent object to send.
    
    抛出:
    
    RemoteException - Throws this exception if the EventHandler referenced by this Courier does not exist.
    
    从以下版本开始:
    
    3
  - getRemoteObject
```
public IRemoteObject getRemoteObject()
```
    Obtains the IRemoteObject object used by this Courier to communicate with its EventHandler.
    
    返回:
    
    Returns the IRemoteObject object.
    
    从以下版本开始:
    
    3
  - marshalling
```
public boolean marshalling(Parcel out)
```
    从接口复制的说明: Sequenceable
    
    Marshals this Sequenceable object into a Parcel.
    
    指定者:
    
    marshalling 在接口中 Sequenceable
    
    参数:
    
    out - Indicates the Parcel object to which the Sequenceable object will be marshaled..
    
    返回:
    
    Returns true if the marshalling is successful; returns false otherwise.
  - unmarshalling
```
public boolean unmarshalling(Parcel in)
```
    从接口复制的说明: Sequenceable
    
    Unmarshals this Sequenceable object from a Parcel.
    
    指定者:
    
    unmarshalling 在接口中 Sequenceable
    
    参数:
    
    in - Indicates the Parcel object into which the Sequenceable object has been marshaled.
    
    返回:
    
    Returns true if the unmarshalling is successful; returns false otherwise.
  - equals
```
public boolean equals(Object other)
```
    从类复制的说明: Object
    Indicates whether some other object is "equal to" this one.
    The equals method implements an equivalence relation on non-null object references:
    - It is reflexive: for any non-null reference value x, x.equals(x) should return true.
    - It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
    - It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
    - It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
    - For any non-null reference value x, x.equals(null) should return false.
    The equals method for class Object implements the most discriminating possible equivalence relation on objects; that is, for any non-null reference values x and y, this method returns true if and only if x and y refer to the same object (x == y has the value true).
    Note that it is generally necessary to override the hashCode method whenever this method is overridden, so as to maintain the general contract for the hashCode method, which states that equal objects must have equal hash codes.
    覆盖:
    
    equals 在类中 Object
    
    参数:
    
    other - the reference object with which to compare.
    
    返回:
    
    true if this object is the same as the obj argument; false otherwise.
    
    另请参阅:
    
    Object.hashCode(), HashMap
  - hashCode
```
public int hashCode()
```
    从类复制的说明: Object
    Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by HashMap.
    The general contract of hashCode is:
    - Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
    - If two objects are equal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce the same integer result.
    - It is not required that if two objects are unequal according to the Object.equals(java.lang.Object) method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
    As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the Java™ programming language.)
    覆盖:
    
    hashCode 在类中 Object
    
    返回:
    
    a hash code value for this object.
    
    另请参阅:
    
    Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)

类 Courier

嵌套类概要

从接口继承的嵌套类/接口 ohos.utils.Sequenceable

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

从接口继承的方法 ohos.utils.Sequenceable

字段详细资料

PRODUCER

构造器详细资料

Courier

Courier

方法详细资料

send

getRemoteObject

marshalling

unmarshalling

equals

hashCode