NdefMessage Class

Definition

[Android.Runtime.Register("android/nfc/NdefMessage", DoNotGenerateAcw=true)]
public sealed class NdefMessage : Java.Lang.Object, Android.OS.IParcelable, IDisposable, Java.Interop.IJavaPeerable

[<Android.Runtime.Register("android/nfc/NdefMessage", DoNotGenerateAcw=true)>]
type NdefMessage = class
    inherit Object
    interface IParcelable
    interface IJavaObject
    interface IDisposable
    interface IJavaPeerable

Inheritance

Object

Object

NdefMessage

Attributes

RegisterAttribute

Implements

IParcelable IJavaObject IJavaPeerable IDisposable

Remarks

Represents an immutable NDEF Message.

NDEF (NFC Data Exchange Format) is a light-weight binary format, used to encapsulate typed data. It is specified by the NFC Forum, for transmission and storage with NFC, however it is transport agnostic.

NDEF defines messages and records. An NDEF Record contains typed data, such as MIME-type media, a URI, or a custom application payload. An NDEF Message is a container for one or more NDEF Records.

When an Android device receives an NDEF Message (for example by reading an NFC tag) it processes it through a dispatch mechanism to determine an activity to launch. The type of the <em>first</em> record in the message has special importance for message dispatch, so design this record carefully.

Use #NdefMessage(byte[]) to construct an NDEF Message from binary data, or #NdefMessage(NdefRecord[]) to construct from one or more NdefRecords. <p class="note"> NdefMessage and NdefRecord implementations are always available, even on Android devices that do not have NFC hardware. <p class="note"> NdefRecords are intended to be immutable (and thread-safe), however they may contain mutable fields. So take care not to modify mutable fields passed into constructors, or modify mutable fields obtained by getter methods, unless such modification is explicitly marked as safe.

Java documentation for android.nfc.NdefMessage.

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.

Constructors

Properties

Methods

Explicit Interface Implementations

Extension Methods

Applies to