https://ferrand-d.medium.com/paging-image-gallery-with-recyclerview-f059d035b7e7

PagingImageGallery_childRatio.kt

override fun onBindViewHolder(vh: VH, position: Int) {
    val image = images[position]

    // Resize view to respect aspect ratio
    val imageAspectRatio = image.aspectRatio

    val targetImageWidth: Int =
        if (imageAspectRatio < maxImageAspectRatio) {
            // Tall image: height = max, width adjusts
            (maxImageHeight * imageAspectRatio).roundToInt()
        } else {
            // Wide image: width = max
            maxImageWidth
        }

    vh.imageView.layoutParams = RecyclerView.LayoutParams(
        targetImageWidth,
        RecyclerView.LayoutParams.MATCH_PARENT
    )

    // Load image
    Glide.with(vh.imageView).load(image.url).into(vh.imageView)
}