Show Error in TextInputEditText

MyTextInputEditText.kt

import android.content.Context
import android.graphics.Point
import android.graphics.Rect
import android.util.AttributeSet
import android.view.View
import android.view.ViewParent
import com.google.android.material.textfield.TextInputEditText
import com.google.android.material.textfield.TextInputLayout

class MyTextInputEditText : TextInputEditText {

    @JvmOverloads
    constructor(
        context: Context,
        attrs: AttributeSet? = null,
        defStyleAttr: Int = android.R.attr.editTextStyle
    ) : super(context, attrs, defStyleAttr) {
    }

    private val parentRect = Rect()

    override fun getFocusedRect(rect: Rect?) {
        super.getFocusedRect(rect)
        rect?.let {
            getMyParent().getFocusedRect(parentRect)
            rect.bottom = parentRect.bottom
        }
    }

    override fun getGlobalVisibleRect(rect: Rect?, globalOffset: Point?): Boolean {
        val result = super.getGlobalVisibleRect(rect, globalOffset)
        rect?.let {
            getMyParent().getGlobalVisibleRect(parentRect, globalOffset)
            rect.bottom = parentRect.bottom
        }
        return result
    }

    override fun requestRectangleOnScreen(rect: Rect?): Boolean {
        val result = super.requestRectangleOnScreen(rect)
        val parent = getMyParent()
        // 10 is a random magic number to define a rectangle height.
        parentRect.set(0, parent.height - 10, parent.right, parent.height)
        parent.requestRectangleOnScreen(parentRect, true /*immediate*/)
        return result;
    }

    private fun getMyParent(): View {
        var myParent: ViewParent? = parent;
        while (!(myParent is TextInputLayout) && myParent != null) {
            myParent = myParent.parent
        }
        return if (myParent == null) this else myParent as View
    }
}

This is a snippet from here:
https://youtu.be/fpSfCvP36aA?t=1772

Can you please put it in a normal sample on Github, to show how to use it?

This destroys the rest of my layout. The label doesn't float to the top any more but somewhere inside the TextInputLayout and the MyTextInputEditText is way smaller than when using the usual TextInputEditText

This code doesn't work for me. Why do you even need to override requestRectangleOnScreen and getFocusedRect if no entity calls that code when keyboard opens? (checked with debugger)