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.
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