Swift - find out which table view cell occupies most of screen - swift

Question

I have this table view whose table view cells have the width and the height of the screen. Each showing an image.
While you scroll through the table view you can have one table view cell occupying the whole screen. Or at the most you can see 2 table view cells on the screen of the app at the same time.
My question is: is there any way I can find out which of the 2 table view cells occupies more screen height than the other?

Answer 1

Here is the easy way to find out which cell is visible more than 60%.
func scrollViewDidScroll(scrollView: UIScrollView) {
checkWhichVideoToEnable()
}
func checkWhichVideoToEnable() {
for cell in tableView.visibleCells as [UITableViewCell] {
if cell.isKindOfClass(UITableViewCell) {
let indexPath = tableView.indexPathForCell(cell)
let cellRect = tableView.rectForRowAtIndexPath(indexPath!)
let superView = tableView.superview
let convertedRect = tableView.convertRect(cellRect, toView: superView)
let intersect = CGRectIntersection(tableView.frame, convertedRect)
let visibleHeight = CGRectGetHeight(intersect)
if visibleHeight > self.view.bounds.size.height * 0.6 { // only if 60% of the cell is visible.
//cell is visible more than 60%
print(indexPath?.row) //your visible cell.
}
}
}
}
Reference from HERE.

Answer 2

Look at the second visible cell (tableView.visibleCells[1]) and check its y position. If it's less than half the height of the tableView, it's taking up more of the screen, else less. Break ties any way you want.
edit
The y position for a given indexPath is fixed, so you need to take into account the tableView's contentOffset.
CGFloat yOrigin = [tableView.visibleCells[1] frame].origin.y - tableView.contentOffset.y;

Answer 3

you could maybe try to get the tableView's visibleCells and check the origin of those cells. Since you'll have 2 visibleCells at any time, comparing their respective frame's y value could tell you which is occupying more height