QNdefMessage Class

The QNdefMessage class provides an NFC NDEF message. More...

Header:	#include <QNdefMessage>
CMake:	find_package(Qt6 REQUIRED COMPONENTS Nfc) target_link_libraries(mytarget PRIVATE Qt6::Nfc)
qmake:	QT += nfc
Since:	Qt 5.2
Inherits:	QList

List of all members, including inherited members

Public Functions

	QNdefMessage()
	QNdefMessage(const QNdefRecord &record)
	QNdefMessage(const QList<QNdefRecord> &records)
	QNdefMessage(const QNdefMessage &message)
QByteArray	toByteArray() const
`(since 6.2)` QNdefMessage &	operator=(const QNdefMessage &other)
`(since 6.2)` QNdefMessage &	operator=(QNdefMessage &&other)
bool	operator==(const QNdefMessage &other) const

Static Public Members

QNdefMessage fromByteArray(const QByteArray &message)

Detailed Description

A QNdefMessage is a collection of 0 or more QNdefRecords. QNdefMessage inherits from QList<QNdefRecord> and therefore the standard QList functions can be used to manipulate the NDEF records in the message.

NDEF messages can be parsed from a byte array conforming to the NFC Data Exchange Format technical specification by using the fromByteArray() static function. Conversely QNdefMessages can be converted into a byte array with the toByteArray() function.

Member Function Documentation

`[constexpr noexcept]` QNdefMessage::QNdefMessage()

Constructs a new empty NDEF message.

`[explicit]` QNdefMessage::QNdefMessage(const QNdefRecord &record)

Constructs a new NDEF message containing a single record record.

QNdefMessage::QNdefMessage(const QList<QNdefRecord> &records)

Constructs a new NDEF message that contains all of the records in records.

`[noexcept]` QNdefMessage::QNdefMessage(const QNdefMessage &message)

Constructs a new NDEF message that is a copy of message.

`[static]` QNdefMessage QNdefMessage::fromByteArray(const QByteArray &message)

Returns an NDEF message parsed from the contents of message.

The message parameter is interpreted as the raw message format defined in the NFC Data Exchange Format technical specification.

If a parse error occurs an empty NDEF message is returned.

QByteArray QNdefMessage::toByteArray() const

Returns the NDEF message as a byte array.

The return value of this function conforms to the format defined in the NFC Data Exchange Format technical specification.

`[noexcept, since 6.2]` QNdefMessage &QNdefMessage::operator=(const QNdefMessage &other)

This is an overloaded function.

Copy assignment operator from QList<QNdefRecord>. Assigns the other list of NDEF records to this NDEF record list.

After the operation, other and *this will be equal.

This function was introduced in Qt 6.2.

`[noexcept, since 6.2]` QNdefMessage &QNdefMessage::operator=(QNdefMessage &&other)

This is an overloaded function.

Move assignment operator from QList<QNdefRecord>. Moves the other list of NDEF records to this NDEF record list.

After the operation, other will be empty.

This function was introduced in Qt 6.2.

bool QNdefMessage::operator==(const QNdefMessage &other) const

Returns true if this NDEF message is equivalent to other; otherwise returns false.

An empty message (i.e. isEmpty() returns true) is equivalent to a NDEF message containing a single record of type QNdefRecord::Empty.

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