NFC阅读器在应用程序关闭时以及Pixel、小米等设备上运行良好,但三星除外

我对三星设备有问题。我的NFC阅读器在Pixels和小米上都能完美工作,无论是否打开应用程序。然而,在三星设备上,它只能在应用程序关闭时工作。打开应用程序时,我没有在logcat上检测到NFC标签。 这里是我的NFCM经理:

class NFCManager( val context: Context, private val onTagReadCallback: (String) -> Unit = {} ) {
private var isNFCToastShown: Boolean = false
private var mNfcAdapter: NfcAdapter? = null
private var lastLink: String? = null
lateinit var pendingIntent: PendingIntent
lateinit var intentFiltersArray: Array<IntentFilter>

fun init(activity: AppCompatActivity) {

    mNfcAdapter = NfcAdapter.getDefaultAdapter(activity)
    val intent = Intent(activity, javaClass).apply {
        addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP)
    }
    pendingIntent = PendingIntent.getActivity(
        activity, 0, intent,
        PendingIntent.FLAG_MUTABLE
    )
    val ndef = IntentFilter(NfcAdapter.ACTION_NDEF_DISCOVERED).apply {
        try {
            addDataType("*/*")    /* Handles all MIME based dispatches.
                             You should specify only the ones that you need. */
        } catch (e: IntentFilter.MalformedMimeTypeException) {
            throw RuntimeException("fail", e)
        }
    }
    val techDetected = IntentFilter(NfcAdapter.ACTION_TECH_DISCOVERED).apply {
        try {
            addDataType("*/*")    /* Handles all MIME based dispatches.
                             You should specify only the ones that you need. */
        } catch (e: IntentFilter.MalformedMimeTypeException) {
            throw RuntimeException("fail", e)
        }
    }
    val tagDetected = IntentFilter(NfcAdapter.ACTION_TAG_DISCOVERED).apply {
        try {
            addDataType("*/*")    /* Handles all MIME based dispatches.
                             You should specify only the ones that you need. */
        } catch (e: IntentFilter.MalformedMimeTypeException) {
            throw RuntimeException("fail", e)
        }
    }

    intentFiltersArray = arrayOf(ndef, techDetected, tagDetected)
}

private fun handleLink(link: String) {
    if (link != lastLink) {
        lastLink = link
        Handler(Looper.getMainLooper()).postDelayed({
            lastLink = null
        }, 4000)
        Timber.d("NFC NFCManager onShowTransaction : " + link)
        link.let(onTagReadCallback)
    }
}

fun enableNFC(activity: AppCompatActivity) {
    Timber.d("NFC enable nfc")
    if (mNfcAdapter == null) {
        init(activity)
    }
    if (mNfcAdapter != null) {
        if (!mNfcAdapter!!.isEnabled) {
            // Nfc is disabled
        }
        mNfcAdapter!!.enableReaderMode(activity, {
            val ndef = Ndef.get(it)
            if (ndef != null) {
                ndef.connect()
                val ndefMessage = ndef.ndefMessage
                if (ndefMessage != null) {
                    val records = ndefMessage.records
                    for (record in records) {
                        if (record.toUri() != null) {
                            val link = record.toUri().toString()
                            handleLink(link)
                        }
                    }
                }
                ndef.close()
            } else {
                Handler(Looper.getMainLooper()).postDelayed({
                    Toast.makeText(
                        activity,
                        activity.getString(R.string.nfc_manager_wrong_nfc_format),
                        Toast.LENGTH_SHORT
                    ).show()
                }, 100)
            }
        }, NfcAdapter.FLAG_READER_NFC_A, Bundle.EMPTY)
        mNfcAdapter!!.enableForegroundDispatch(
            activity,
            pendingIntent,
            intentFiltersArray,
            arrayOf(
                arrayOf(
                    Ndef::class.java.name,
                    NfcV::class.java.name,
                    NfcF::class.java.name,
                    NfcA::class.java.name,
                    NfcB::class.java.name
                )
            )
        )
    } else {
        /*
        if (!isNFCToastShown) {
            Toast.makeText(
                activity,
                activity.getString(R.string.nfc_manager_no_nfc_module),
                Toast.LENGTH_SHORT
            ).show()
            isNFCToastShown = true
        }

         */
    }
}

fun disableNFC(activity: AppCompatActivity) {
    Timber.d("NFC disable nfc")
    mNfcAdapter?.disableForegroundDispatch(activity)
    mNfcAdapter?.disableReaderMode(activity)
}

我在简历上启用了此管理器,在暂停时禁用了它。

我的清单:

<uses-permission android:name="android.permission.NFC" /> <intent-filter> <action android:name="android.nfc.action.NDEF_DISCOVERED" /> <category android:name="android.intent.category.DEFAULT" />  
          <data android:mimeType="*/*" />
        </intent-filter>

        <intent-filter>
            <action android:name="android.nfc.action.NDEF_DISCOVERED" />
            <category android:name="android.intent.category.DEFAULT" />

            <data android:host="${deepLinkUri}" />

            <data android:pathPrefix="/c/" />

            <data android:scheme="https" />
        </intent-filter>

        <meta-data
            android:name="android.nfc.action.TECH_DISCOVERED"
            android:resource="@xml/techlist" />`

这里真的需要一些帮助,因为我不理解这种奇怪的行为。我尝试了一个阅读器NFC应用程序,没有检测到问题。

我需要一些帮助来找出三星设备上NFC阅读器的问题