程序包 ohos.app

类 GeneralReceiver

java.lang.Object

ohos.app.GeneralReceiver

所有已实现的接口:

Sequenceable

public class GeneralReceiver
extends Object
implements Sequenceable

Provides generic callback methods for receiving results from other processes during inter-process communication (IPC).

You can create a child class instance, override the onReceive(int, ohos.utils.PacMap) method, and send the child class instance to the peer end through IPC. The peer end then uses sendResult(int, ohos.utils.PacMap) to send the result back.

从以下版本开始:

2

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<GeneralReceiver>	PRODUCER	Creates a GeneralReceiver instance from a Parcel.

构造器概要

构造器

构造器	说明
GeneralReceiver()	A constructor used to create a GeneralReceiver instance whose EventHandler is null.
GeneralReceiver(EventHandler handler)	A constructor used to create a GeneralReceiver instance with an EventHandler object passed.

方法概要

限定符和类型	方法	说明
boolean	marshalling(Parcel out)	Marshals a GeneralReceiver object into a Parcel.
protected void	onReceive(int code, PacMap data)	Receives the result.
void	sendResult(int resultCode, PacMap resultData)	Sends a result to the current GeneralReceiver.
boolean	unmarshalling(Parcel in)	Unmarshals a GeneralReceiver object from a Parcel.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, 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<GeneralReceiver> PRODUCER

Creates a GeneralReceiver instance from a Parcel.

从以下版本开始:

4

构造器详细资料

GeneralReceiver

public GeneralReceiver()

A constructor used to create a GeneralReceiver instance whose EventHandler is null.

从以下版本开始:

2

GeneralReceiver

public GeneralReceiver(EventHandler handler)

A constructor used to create a GeneralReceiver instance with an EventHandler object passed.

参数:

handler - Indicates the EventHandler object. If this parameter is not null, onReceive(int, ohos.utils.PacMap) will be called on the thread of the specified EventHandler. If this parameter is null, onReceive(int, ohos.utils.PacMap) can be called on any thread.

从以下版本开始:

2

方法详细资料

sendResult

public void sendResult(int resultCode,
                       PacMap resultData)

Sends a result to the current GeneralReceiver.

参数:

resultCode - Indicates the custom result code you have defined as required.

resultData - Indicates the PacMap object containing result data.

从以下版本开始:

2

onReceive

protected void onReceive(int code,
                         PacMap data)

Receives the result.

You must override this method.

参数:

code - Indicates the result code sent by the sender.

data - Indicates the PacMap object containing the result data sent by the sender.

从以下版本开始:

2

marshalling

public boolean marshalling(Parcel out)

Marshals a GeneralReceiver object into a Parcel.

A process can call the unmarshalling(ohos.utils.Parcel) method to unmarshal a GeneralReceiver object from a Parcel to implement inter-process communication (IPC).

指定者:

marshalling 在接口中 Sequenceable

参数:

out - Indicates the Parcel object for marshalling.

返回:

Returns true if the marshalling is successful; returns false otherwise.

从以下版本开始:

2

unmarshalling

public boolean unmarshalling(Parcel in)

Unmarshals a GeneralReceiver object from a Parcel.

指定者:

unmarshalling 在接口中 Sequenceable

参数:

in - Indicates the Parcel object for unmarshalling.

返回:

Returns true if the unmarshalling is successful; returns false otherwise.

从以下版本开始:

2