How to make it so that on each scroll
the cells are simply updated, and not
new ones are drawn?
I didn’t get that bit.
but the total number is unlimited, at
least 1kk.
You will hit a performance brick wall & face a bloated memory footprint with those numbers using a Grid Panel. You will need a Tile View instead. Here’s a neat example of how a List View (same idea but not tiled) works:
You only draw / show what the user can see (plus some margin). So if the container can show 30 items at a time but you have 10k elements, only a fraction of those will be kept and managed in the memory and other bits are generated dynamically on-the-fly as needed.
If you decide to stick with the Grid solution, here’s how you can dynamically add and distribute elements a grid:
The forums update messed up some images, but the critical bit shows up.
