Question

I have a customlist in which I overload the getView function and I need to know the y position of the current item that is being drawn. And I need it in relation to the entire list and not just the ones visible on screen. How can I find this out?

Edit: The Items have different heights.

Answer 1

Since you want the one relative to the top of the list (not the top of the visible screen, you can calculate it using:

int yPos = view.getHeight() * position;

Edit:
Different heights? That probably hurts performance, since the recycler isn’t helping much.

I don’t think there’s a magic method for this case. Realistically what you have to do is keep an array of list position and y offsets, so for instance

// Item at position 0, top starts at 0, height is 15
pos[0][0] = 0
pos[0][1] = 15

// Next item starts one pixel down from previous item's top, is 10 pixels tall
pos[1][0] = 16
pos[1][1] = 10

And just populate from within getView. Note that this solution tracks individual height as well as absolute offset for each item- since the previous item’s position + height is required to determine the next item’s position.