我希望它在每次扫描时将标记添加到列表中。然后在Activity的TextView中显示它
我试着复制数组并增加它的大小，但是没有用。

override fun onTagDiscovered(tag: Tag?) {
    val test = findViewById<TextView>(R.id.test)
    val mNdef = Ndef.get(tag)
    val test123 = mutableListOf<String>()

    //val myList = mutableListOf("")

    if (mNdef != null) {
        val mNdefMessage = mNdef.cachedNdefMessage
        val firstRecord = mNdefMessage.records[0]
        val payload= firstRecord.payload
        val textArray= payload.copyOfRange(payload[0].toInt() + 1, payload.size)

        var text = String(textArray)

        test123.add(text)
        Log.i("TAG", test123.toString())

        test.text = text

    }

`