NfcA.Transceive(Byte[]) Method
Definition
Important
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Send raw NFC-A commands to the tag and receive the response.
[Android.Runtime.Register("transceive", "([B)[B", "")]
public byte[]? Transceive (byte[]? data);[<Android.Runtime.Register("transceive", "([B)[B", "")>]
member this.Transceive : byte[] -> byte[]Parameters
- data
- Byte[]
bytes to send
Returns
bytes received in response
- Attributes
Exceptions
if there is an I/O failure, or this operation is canceled
Remarks
Send raw NFC-A commands to the tag and receive the response.
Applications must not append the EoD (CRC) to the payload, it will be automatically calculated.
Applications must only send commands that are complete bytes, for example a SENS_REQ is not possible (these are used to manage tag polling and initialization).
Use #getMaxTransceiveLength to retrieve the maximum number of bytes that can be sent with #transceive.
This is an I/O operation and will block until complete. It must not be called from the main application thread. A blocked call will be canceled with IOException if #close is called from another thread.
<p class="note">Requires the android.Manifest.permission#NFC permission.
Java documentation for android.nfc.tech.NfcA.transceive(byte[]).
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.