UICollectionView Cell Spacing based on device screen size

Question

I have implemented a UICollectionView, the cell size is w90 h90. When i run it on iPhone 6 i get the proper spacing between cell but when i do it on iPhone 5s i get more sp

Answer 1

For a slightly more flexible answer

Allows you to adjust number of columns and spacing, expanding on Zaid Pathan's answer

// MARK: UICollectionViewDelegateFlowLayout delegate method
func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize
{
    let cellSpacing = CGFloat(2) //Define the space between each cell
    let leftRightMargin = CGFloat(20) //If defined in Interface Builder for "Section Insets"
    let numColumns = CGFloat(3) //The total number of columns you want

    let totalCellSpace = cellSpacing * (numColumns - 1)
    let screenWidth = UIScreen.mainScreen().bounds.width
    let width = (screenWidth - leftRightMargin - totalCellSpace) / numColumns
    let height = CGFloat(110) //whatever height you want

    return CGSizeMake(width, height);
}