Is it possible to configure RecyclerView to display all items at once, bypassing the lazy loading mechanism?

RecyclerView is optimized by default for lazy loading and displays only visible items plus a small buffer for smooth scrolling. To make RecyclerView display all items at once, you can disable ViewHolder reuse and set the height of RecyclerView to accommodate all items.

For example, if RecyclerView is inside a ScrollView, you can use a custom LayoutManager that measures and expands all items:

class NonScrollableLinearLayoutManager(context: Context) : LinearLayoutManager(context) {
    override fun canScrollVertically(): Boolean {
        return false // Disable scrolling
    }

    override fun onMeasure(recycler: RecyclerView.Recycler, state: RecyclerView.State, widthSpec: Int, heightSpec: Int) {
        var height = 0
        for (i in 0 until itemCount) {
            val view = recycler.getViewForPosition(i)
            measureChild(view, widthSpec, heightSpec)
            height += getDecoratedMeasuredHeight(view)
            recycler.recycleView(view)
        }
        setMeasuredDimension(View.MeasureSpec.getSize(widthSpec), height)
    }
}

However, this approach is not recommended for large lists, as it defeats the purpose of RecyclerView — efficient memory and performance usage. If you need to display all items at once, it might be better to use another container, such as LinearLayout inside a ScrollView.