Distracting TouchEvent in NestedRecyclerView

I have a nested RecyclerView. I'll call them as ParentRecyclerView and ChildRecyclerView. My goal is kind of complicated.

1. If i click ParentRecyclerView's item, then the color of ParentRecyclerView's item bckground will be changed to gray.(It means the ParentRecyclerView gets the TouchEvent)
2. If i click ChildRecyclerView's item, then the effect is same with number 1. It means the color of parentRecyclerview's item will be changed to gray(clicked/touched, It means the ParentRecyclerView gets the TouchEvent like Number 1)
3. If i touch and drag the ChildRecyclerView Horizontally, then i can scroll the ChildRecyclerView.(It means the ParentRecylcerView doesn't get the TouchEvent. ChildRecyclerView gets the TouchEvent.)
   I used selector with XML to change the background of the item.
   and I used TouchEvent to make it work the way I wanted it to and made a custom ConstraintLayout.
   

Here is the code of custom ConstraintLayout.

class TouchThroughConstraintLayout(context: Context, attrs: AttributeSet?) : ConstraintLayout(context, attrs) {
    private var mLastMotionX = 0f
    private var mLastMotionY = 0f

    private lateinit var childViewGroup: ViewGroup

    fun setChildView(childViewGroup: ViewGroup) { // in this case, the childViewGroup is ChildRecyclerView
        this.childViewGroup = childViewGroup
    }

    override fun onInterceptTouchEvent(ev: MotionEvent): Boolean {
        when (ev.action) {
            MotionEvent.ACTION_DOWN -> {
                mLastMotionX = ev.x
                mLastMotionY = ev.y
                return childViewGroup.isViewInBounds(ev.rawX.toInt(), ev.rawY.toInt())
            }

            MotionEvent.ACTION_MOVE -> {
                return false
            }
        }

        return false
    }

    private fun View.isViewInBounds(x : Int, y :Int): Boolean{
        val outRect = Rect()
        val location = IntArray(2)

        getDrawingRect(outRect)
        getLocationOnScreen(location)
        outRect.offset(location[0], location[1])

        return outRect.contains(x, y)
    }
}

but the code doesn't work because When i touch the childRecyclerView, isViewInBounds() always returns true. So, the ParentRecyclerView gets the TouchEvent.
How can i solve it?? Thanks in advance. :)

Made some modifications. Please check.

class TouchThroughConstraintLayout(context: Context, attrs: AttributeSet?)
    : ConstraintLayout(context, attrs) {
    private var mLastMotionX = 0f
    private var mLastMotionY = 0f

    private lateinit var childViewGroup: ViewGroup

    private val touchSlop = ViewConfiguration.get(context).scaledTouchSlop

    fun setChildView(childViewGroup: ViewGroup) {
        this.childViewGroup = childViewGroup
    }

    private var childViewIsTouched = false
    private var childViewIsSwipedHorinzontally = false

    override fun onInterceptTouchEvent(ev: MotionEvent): Boolean {
        when (ev.action) {
            MotionEvent.ACTION_DOWN -> {
                mLastMotionX = ev.x
                mLastMotionY = ev.y
                // Check if the touch is within the bounds of the child view group
                childViewIsTouched = childViewGroup.isViewInBounds(ev.rawX.toInt(), ev.rawY.toInt())
                // Always intercept the touch event to handle it in onTouchEvent
                return true
            }
        }
        return super.onInterceptTouchEvent(ev)
    }


    override fun onTouchEvent(event: MotionEvent): Boolean {
        when (event.action) {
            MotionEvent.ACTION_DOWN -> {
                childViewIsSwipedHorinzontally = false

                //Pass the event to the child view if child is touched
                if (childViewIsTouched) {
                    childViewGroup.dispatchTouchEvent(event)
                }
            }

            MotionEvent.ACTION_MOVE -> {
                //Pass the event to the child view if childView is touched Touched and swiped
                if (childViewIsTouched && isHorizontalSwipe(event)) {
                    childViewIsSwipedHorinzontally = true
                    childViewGroup.dispatchTouchEvent(event)
                }

            }
            //If child view is not swiped consume the event
            MotionEvent.ACTION_UP,
            MotionEvent.ACTION_CANCEL -> {
                return if (!childViewIsSwipedHorinzontally) {
                    super.onTouchEvent(event)
                }else{
                    false
                }
            }
        }
        return super.onTouchEvent(event)
    }

    private fun isHorizontalSwipe(event: MotionEvent): Boolean {
        val adx = abs(event.x - mLastMotionX)
        return adx > touchSlop
    }

    private fun View.isViewInBounds(x : Int, y :Int): Boolean{
        val outRect = Rect()
        val location = IntArray(2)

        getDrawingRect(outRect)
        getLocationOnScreen(location)
        outRect.offset(location[0], location[1])

        return outRect.contains(x, y)
    }

}

Edit: Also you have to remove android:state_pressed="true" portion of your sbg_white.xml.

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
    <item android:state_enabled="false">
        <shape android:shape="rectangle">
            <solid android:color="#EAEAEA" />
        </shape>
    </item>
    <item android:state_selected="true">
        <shape android:shape="rectangle">
            <solid android:color="#FFF1F1F1"/>
        </shape>
    </item>
<!--    <item android:state_pressed="true">
        <shape android:shape="rectangle">
            <solid android:color="#FFF1F1F1"/>
        </shape>
    </item>-->
    <item>
        <shape android:shape="rectangle">
            <solid android:color="#FFF"/>
        </shape>
    </item>
</selector>

Add logic handling the selection state of parent RV item:

class ParentAdapter: ListAdapter<ParentItem, ParentAdapter.ParentViewHolder>(diffUtil) {

  private var selectedPosition = -1

  override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ParentViewHolder {
        val binding = ItemRecyclerviewBinding.inflate(LayoutInflater.from(parent.context), parent, false)
        return ParentViewHolder(binding).apply{
            itemView.setOnClickListener{
                val previousSelectedPosition = selectedPosition
                selectedPosition = bindingAdapterPosition
                notifyItemChanged(previousSelectedPosition)
                notifyItemChanged(selectedPosition)
                true
            }
        }
    }

    override fun onBindViewHolder(holder: ParentViewHolder, position: Int) {
        //update selected state accordingly
        holder.itemView.isSelected = position == selectedPosition

        holder.bind()
    }

   //rest of your codes

}

If it's necessary to retain the other states of the rv item like the scroll position, you can do partial bind using change payload:

class ParentAdapter: ListAdapter<ParentItem, ParentAdapter.ParentViewHolder>(diffUtil) {

   companion object{
       private const val PAYLOAD_SELECTED_STATE = "selected_state"
   }

  private var selectedPosition = -1

  override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ParentViewHolder {
        val binding = ItemRecyclerviewBinding.inflate(LayoutInflater.from(parent.context), parent, false)
        return ParentViewHolder(binding).apply{
            itemView.setOnClickListener{
                val previousSelectedPosition = selectedPosition
                selectedPosition = bindingAdapterPosition
                notifyItemChanged(previousSelectedPosition, PAYLOAD_SELECTED_STATE)
                notifyItemChanged(selectedPosition, PAYLOAD_SELECTED_STATE )
                true
            }
        }
    }

    override fun onBindViewHolder(
        holder: NewsViewHolder,
        position: Int,
        payloads: MutableList<Any>
    ) {
        if (payloads.isEmpty()) {
            super.onBindViewHolder(holder, position, payloads)
        }else {
            for (payload in payloads) {         
                if (payload == PAYLOAD_SELECTED_STATE) {
                   //update selected state accordingly
                    holder.itemView.isSelected = position == selectedPosition
                }
            }
        }
    }

    override fun onBindViewHolder(holder: ParentViewHolder, position: Int) {
        //update selected state accordingly
        holder.itemView.isSelected = position == selectedPosition

        holder.bind()
    }

   //rest of your codes

}