NfcReaderKMP/com.devtamuno.kmp.nfcreader.contract/NfcReadManager

NfcReadManager

internal actual class NfcReadManager(config: NfcConfig) : NfcAdapter.ReaderCallback(source)

Android implementation of NfcReadManager. Handles NFC tag scanning using the Android NFC Adapter in Reader Mode.

UI is delegated to NfcScanBottomSheet; tag parsing to NfcTagParser.kt.

internal expect class NfcReadManager(config: NfcConfig)(source)

Manager class for handling NFC reading operations.

This is an expected class with platform-specific implementations for Android and iOS. It manages the NFC scanning process, provides results via a StateFlow, and handles the UI (like bottom sheets on Android or native dialogs on iOS).

internal actual class NfcReadManager(config: NfcConfig) : NSObject, NFCTagReaderSessionDelegateProtocol(source)

iOS implementation of NfcReadManager. Handles NFC tag scanning using CoreNFC's NFCTagReaderSession. The system manages the scanning UI; RegisterManager is a no-op.

Tag parsing is delegated to NfcTagParser.kt.

Constructors

NfcReadManager

actual constructor(config: NfcConfig)

expect constructor(config: NfcConfig)

actual constructor(config: NfcConfig)

Types

Companion

object Companion

Properties

debugDescription

expect val debugDescription: String?

description

expect val description: String?

hash

expect val hash: NSUInteger

nfcResult

actual val nfcResult: StateFlow<NfcReadResult>

A StateFlow that emits the current NfcReadResult during the scanning process.

expect val nfcResult: StateFlow<NfcReadResult>

A StateFlow that emits the current NfcReadResult of the NFC scanning process.

actual val nfcResult: StateFlow<NfcReadResult>

A StateFlow that emits the current NfcReadResult.

superclass

expect val superclass: ObjCClass?

Functions

class

expect open override fun class(): ObjCClass?

conformsToProtocol

expect open override fun conformsToProtocol(aProtocol: objcnames/classes/Protocol??): Boolean

copy

expect open fun copy(): Any?

debugDescription

expect open fun debugDescription(): String?

description

expect open override fun description(): String?

doesNotRecognizeSelector

expect open fun doesNotRecognizeSelector(aSelector: COpaquePointer?)

finalize

expect open fun finalize()

forwardingTargetForSelector

expect open fun forwardingTargetForSelector(aSelector: COpaquePointer?): Any?

forwardInvocation

expect open fun forwardInvocation(anInvocation: objcnames/classes/NSInvocation??)

hash

expect open override fun hash(): NSUInteger

init

expect open fun ~~init~~(): NSObject?

isEqual

expect open override fun isEqual(object: Any?): Boolean

isKindOfClass

expect open override fun isKindOfClass(aClass: ObjCClass?): Boolean

isMemberOfClass

expect open override fun isMemberOfClass(aClass: ObjCClass?): Boolean

isProxy

expect open override fun isProxy(): Boolean

methodForSelector

expect open fun methodForSelector(aSelector: COpaquePointer?): IMP?

methodSignatureForSelector

expect open fun methodSignatureForSelector(aSelector: COpaquePointer?): objcnames/classes/NSMethodSignature??

mutableCopy

expect open fun mutableCopy(): Any?

onTagDiscovered

open override fun onTagDiscovered(tag: Tag?)

Callback triggered when an NFC tag is discovered. Cancels the timeout immediately, then parses the tag and emits the result.

performSelector

expect open override fun performSelector(aSelector: COpaquePointer?): Any?

expect open override fun performSelector(aSelector: COpaquePointer?, withObject: Any?): Any?

expect open override fun performSelector(aSelector: COpaquePointer?, withObject: Any?, _withObject: Any?): Any?

RegisterManager

@Composable

actual fun RegisterManager()

Registers the manager with the current Activity and Context, and renders the scan UI. The scope is cancelled when the composable leaves composition entirely. The NFC adapter reference is refreshed on Activity recreation (e.g. configuration change).

@Composable

expect fun RegisterManager()

A Composable function that registers the manager within the Compose UI hierarchy. This is typically used to handle lifecycle events and show scanning-related UI components.

@Composable

actual fun RegisterManager()

Registers the manager (no-op on iOS — the system owns the scanning UI).

respondsToSelector

expect open override fun respondsToSelector(aSelector: COpaquePointer?): Boolean

startScanning

actual fun startScanning()

Starts the NFC scanning process. Validates the adapter and NFC state, then enables Reader Mode with a timeout.

expect fun startScanning()

Starts the NFC scanning process.

actual fun startScanning()

Starts the NFC scanning process.

stopScanning

actual fun stopScanning()

Stops the NFC scanning process and disables Reader Mode.

expect fun stopScanning()

Stops the NFC scanning process.

actual fun stopScanning()

Stops the NFC scanning process.

superclass

expect open override fun superclass(): ObjCClass?

tagReaderSession

open override fun tagReaderSession(session: NFCTagReaderSession, didDetectTags: List<*>)

Invoked when tags are detected. Only the first tag in the field is processed.

open override fun tagReaderSession(session: NFCTagReaderSession, didInvalidateWithError: NSError)

Invoked when the session is invalidated. The pending result (captured before invalidation) is emitted here — after the system dialog has fully dismissed — to avoid UI conflicts.

tagReaderSessionDidBecomeActive

open override fun tagReaderSessionDidBecomeActive(session: NFCTagReaderSession)