Package io.flutter.plugin.common

Class StandardMethodCodec

java.lang.Object

io.flutter.plugin.common.StandardMethodCodec

All Implemented Interfaces:

MethodCodec

public final class StandardMethodCodec
extends Object
implements MethodCodec

A MethodCodec using the Flutter standard binary encoding.

This codec is guaranteed to be compatible with the corresponding StandardMethodCodec on the Dart side. These parts of the Flutter SDK are evolved synchronously.

Values supported as method arguments and result payloads are those supported by StandardMessageCodec.

Field Summary

Fields

Modifier and Type	Field	Description
static final StandardMethodCodec	INSTANCE

Constructor Summary

Constructors

Constructor	Description
StandardMethodCodec(StandardMessageCodec messageCodec)	Creates a new method codec based on the specified message codec.

Method Summary

Modifier and Type	Method	Description
Object	decodeEnvelope(ByteBuffer envelope)	Decodes a result envelope from binary.
MethodCall	decodeMethodCall(ByteBuffer methodCall)	Decodes a message call from binary.
ByteBuffer	encodeErrorEnvelope(String errorCode, String errorMessage, Object errorDetails)	Encodes an error result into a binary envelope message.
ByteBuffer	encodeErrorEnvelopeWithStacktrace(String errorCode, String errorMessage, Object errorDetails, String errorStacktrace)	Encodes an error result into a binary envelope message with the native stacktrace.
ByteBuffer	encodeMethodCall(MethodCall methodCall)	Encodes a message call into binary.
ByteBuffer	encodeSuccessEnvelope(Object result)	Encodes a successful result into a binary envelope message.

Methods inherited from class java.lang.Object

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

Field Details

INSTANCE

public static final StandardMethodCodec INSTANCE

Constructor Details

StandardMethodCodec

public StandardMethodCodec(@NonNull
 StandardMessageCodec messageCodec)

Creates a new method codec based on the specified message codec.

Method Details

encodeMethodCall

@NonNull
public ByteBuffer encodeMethodCall(@NonNull
 MethodCall methodCall)

Description copied from interface: MethodCodec

Encodes a message call into binary.

Specified by:

encodeMethodCall in interface MethodCodec

Parameters:

methodCall - a MethodCall.

Returns:

a ByteBuffer containing the encoding between position 0 and the current position.

decodeMethodCall

@NonNull
public MethodCall decodeMethodCall(@NonNull
 ByteBuffer methodCall)

Description copied from interface: MethodCodec

Decodes a message call from binary.

Specified by:

decodeMethodCall in interface MethodCodec

Parameters:

methodCall - the binary encoding of the method call as a ByteBuffer.

Returns:

a MethodCall representation of the bytes between the given buffer's current position and its limit.

encodeSuccessEnvelope

@NonNull
public ByteBuffer encodeSuccessEnvelope(@NonNull
 Object result)

Description copied from interface: MethodCodec

Encodes a successful result into a binary envelope message.

Specified by:

encodeSuccessEnvelope in interface MethodCodec

Parameters:

result - The result value, possibly null.

Returns:

a ByteBuffer containing the encoding between position 0 and the current position.

encodeErrorEnvelope

@NonNull
public ByteBuffer encodeErrorEnvelope(@NonNull
 String errorCode,
 @NonNull
 String errorMessage,
 @NonNull
 Object errorDetails)

Description copied from interface: MethodCodec

Encodes an error result into a binary envelope message.

Specified by:

encodeErrorEnvelope in interface MethodCodec

Parameters:

errorCode - An error code String.

errorMessage - An error message String, possibly null.

errorDetails - Error details, possibly null. Consider supporting Throwable in your codec. This is the most common value passed to this field.

Returns:

a ByteBuffer containing the encoding between position 0 and the current position.

encodeErrorEnvelopeWithStacktrace

@NonNull
public ByteBuffer encodeErrorEnvelopeWithStacktrace(@NonNull
 String errorCode,
 @NonNull
 String errorMessage,
 @NonNull
 Object errorDetails,
 @NonNull
 String errorStacktrace)

Description copied from interface: MethodCodec

Encodes an error result into a binary envelope message with the native stacktrace.

Specified by:

encodeErrorEnvelopeWithStacktrace in interface MethodCodec

Parameters:

errorCode - An error code String.

errorMessage - An error message String, possibly null.

errorDetails - Error details, possibly null. Consider supporting Throwable in your codec. This is the most common value passed to this field.

errorStacktrace - Platform stacktrace for the error. possibly null.

Returns:

a ByteBuffer containing the encoding between position 0 and the current position.

decodeEnvelope

@NonNull
public Object decodeEnvelope(@NonNull
 ByteBuffer envelope)

Description copied from interface: MethodCodec

Decodes a result envelope from binary.

Specified by:

decodeEnvelope in interface MethodCodec

Parameters:

envelope - the binary encoding of a result envelope as a ByteBuffer.

Returns:

the enveloped result Object.