The problem that the value of EditText is randomly placed when scrolling

[sybeom]

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I've created an Epoxy that can add items dynamically.

The item has an EditText.

When items are added enough to allow scrolling, if you scroll down after entering values ​​in the EditText of the first few items, the entered values ​​are randomly assigned to the following items.

I found a similar problem on #426 and #218 applied it but couldn't solve it. (Referring to #426 and #218, it was successful to keep the EditText data after screen transition. However, setting a random value when scrolling was not resolved.)

How do I solve this problem?

Problem Image Link

@EpoxyModelClass(layout = R.layout.item_routine_detail)
abstract class EpoxyDetailModel : EpoxyModelWithHolder<EpoxyDetailModel.Holder>() {
    private var textWatcher: TextWatcher = object : TextWatcher {
        override fun beforeTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {
        }

        override fun onTextChanged(w: CharSequence?, p1: Int, p2: Int, p3: Int) {
        }

        override fun afterTextChanged(w: Editable?) { // w : weight
            onEditTextChanged?.invoke(pos, w.toString())
        }
    }

    @EpoxyAttribute
    lateinit var pos: String

    @EpoxyAttribute
    var set: Int = 0

    @EpoxyAttribute
    var weight: String = ""

    @EpoxyAttribute
    var onEditTextChanged: ((String, String) -> Unit)? = null

    @AfterPropsSet
    override fun bind(holder: Holder) {
        holder.set.text = set.toString()

        holder.weight.apply {
            setTextIfDifferent(weight)
            removeTextChangedListener(textWatcher)
            addTextChangedListener(textWatcher)
        }
    }

    @OnViewRecycled
    fun onViewRecycled(holder: Holder) {
        holder.weight.removeTextChangedListener(textWatcher)
    }

    fun EditText.setTextIfDifferent(newText: CharSequence?): Boolean {
        if (!isTextDifferent(newText, text)) {
            // Previous text is the same. No op
            return false
        }
        setText(newText)

        setSelection(newText?.length ?: 0)
        return true
    }

    fun isTextDifferent(str1: CharSequence?, str2: CharSequence?): Boolean {
        if (str1 === str2) {
            return false
        }
        if (str1 == null || str2 == null) {
            return true
        }
        val length = str1.length
        if (length != str2.length) {
            return true
        }

        if (str1 is Spanned) {
            return str1 != str2
        }

        for (i in 0 until length) {
            if (str1[i] != str2[i]) {
                return true
            }
        }
        return false
    }

    class Holder : KotlinEpoxyHolder() {
        val set by bind<TextView>(R.id.set)
        val weight by bind<EditText>(R.id.weight)
    }
}