程序包 ohos.nfc.oma

类 Channel

java.lang.Object

ohos.nfc.oma.Channel

public final class Channel
extends Object

Provides interfaces to create Channel objects and obtain Channel information.

The interfaces can be used to check whether a channel is disabled or whether a channel is a basic one, disable a channel, send an APDU command, and obtain the response of a secure element.

从以下版本开始:

1

SystemCapability

SystemCapability.Communication.NFC

方法概要

限定符和类型	方法	说明
void	closeChannel()	Disables a channel.
byte[]	getSelectResponse()	Obtains the response to the command to select a secure element.
boolean	isBasicChannel()	Checks whether a channel is a basic one.
boolean	isClosed()	Checks whether a channel is disabled.
byte[]	transmit(byte[] command)	Sends an APDU command to a secure element.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

方法详细资料

isClosed

public boolean isClosed()

Checks whether a channel is disabled.

A channel must have been enabled before an APDU command is sent through the channel.

返回:

Returns true if the channel is disabled; returns false otherwise.

从以下版本开始:

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isBasicChannel

public boolean isBasicChannel()

Checks whether a channel is a basic one.

返回:

Returns true if the channel is a basic one; returns false otherwise.

从以下版本开始:

1

transmit

public byte[] transmit(byte[] command)

Sends an APDU command to a secure element.

参数:

command - Indicates the APDU command.

返回:

Returns the response code.

从以下版本开始:

1

getSelectResponse

public byte[] getSelectResponse()

Obtains the response to the command to select a secure element.

The response is in byte array format.

返回:

Returns the response to the command to select a secure element.

从以下版本开始:

1

closeChannel

public void closeChannel()

Disables a channel.

从以下版本开始:

1