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 |
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.