NFC Constants

The voltmx.nfc namespace provides the below data type constants and error constants.

Data Types constants

Below are the constants to identify the type of data in the NFC tag.

Data Type	Description
voltmx.nfc.DATATYPE_TEXT	Constant for the data MIME text/plain type.
voltmx.nfc.DATATYPE_URI	Constant for the data of type URI.
voltmx.nfc.DATATYPE_MEDIA	Constant for the data of type Mime Media.
voltmx.nfc.DATATYPE_UNKNOWN	Constant for the unrecognized data. The data type which is not supported will be mapped to this constant.

Error Constants

Error	Description
voltmx.nfc.ERROR_TIMEOUT	This error will be thrown in error callback of scanTag Api when the no tag has been detected within the timeout.
voltmx.nfc.ERROR_USER_CANCELLED	Error constant to indicate that user has cancelled the current scan. This will be thrown in error callback during the call to scanTag API.
voltmx.nfc.ERROR_TERMINATED	Error constant to indicate that the read or write operation has been terminated due to the disconnection of the current NFC tag.
voltmx.nfc.ERROR_UNSUPPORTED_TAG	Error constant to indicate that the tag type is not supported.
voltmx.nfc.ERROR_NO_TAG	Error constant to indicate that the tag is not present for read or write operation.
voltmx.nfc.ERROR_READ_ONLY_TAG	Error constant to indicate that the current tag is read-only tag while performing the write operation on tag and data cannot be written to the tag.
voltmx.nfc.ERROR_TAG_CAPACITY_EXCEEDED	Error constant to indicate that the data cannot be written to the tag because the data size is more than the tag size limit.
voltmx.nfc.ERROR_DATA_TYPE_NOT_SUPPORTED	Error constant to indicate that the data attempted to write in the tag is not supported.
voltmx.nfc.ERROR_UNKNOWN	Unknown error during the scan, read or write operation.