UICollectionView Set number of columns

Question

I just started learning about UICollectionViews. I\'m wondering if anyone knows how to specify the number of columns in a collectionview. The default is set to 3 (iPhone/por

Answer 1

the perfect solution is to Using UICollectionViewDelegateFlowLayout but you can easily so calculate the cell width and divided on the wanted number of columns you want

the tricky is to make the width with no fraction

(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath

{
 CGFloat screenWidth = self.view.frame.size.width;
   CGFloat marginWidth = (screenWidth - collectionView.frame.size.width);


   CGFloat cellWith = (collectionView.frame.size.width - marginWidth )/3;
   cellWith= floorf(cellWith);




  CGSize retval = CGSizeMake(cellWith,cellWith);


  return retval;}