Android NFC Tag Lifecycle Observer

NfcTagLifecycleObserver.kt

package com.example

import android.app.Activity
import android.nfc.NfcAdapter
import android.nfc.Tag
import androidx.lifecycle.DefaultLifecycleObserver
import androidx.lifecycle.LifecycleOwner

class NfcTagLifecycleObserver(
    private val activity: Activity,
    private val callback: (Tag?) -> Unit
) : DefaultLifecycleObserver {

    private val adapter = NfcAdapter.getDefaultAdapter(activity)

    override fun onResume(owner: LifecycleOwner) {
        adapter.enableReaderMode(activity, callback::invoke, NfcAdapter.FLAG_READER_NFC_A, null)
    }

    override fun onPause(owner: LifecycleOwner) {
        adapter.disableReaderMode(activity)
    }
}