The QNdefMessage class provides an NFC NDEF message. 更多...
| 头： | #include <QNdefMessage> |
| qmake: | QT += nfc |
| Since: | Qt 5.2 |
| 继承： | QList |
该类在 Qt 5.2 引入。
| QNdefMessage (const QList<QNdefRecord> & records ) | |
| QNdefMessage (const QNdefMessage & message ) | |
| QNdefMessage (const QNdefRecord & record ) | |
| QNdefMessage () | |
| QByteArray | toByteArray () const |
| bool | operator== (const QNdefMessage & other ) const |
| QNdefMessage | fromByteArray (const QByteArray & message ) |
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 () 函数。
Constructs a new NDEF message that contains all of the records in records .
Constructs a new NDEF message that is a copy of message .
Constructs a new NDEF message containing a single record record .
Constructs a new empty NDEF 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.
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.
Returns true if this NDEF message is equivalent to other ；否则返回 false。
An empty message (i.e. isEmpty () returns true) is equivalent to a NDEF message containing a single record of type QNdefRecord::Empty .