In a UICollectionView, the cells will not sit on the bottom

Question

Note it turned out it was a simple mistake the cells would not \"sit on the bottom\". However, it\'s an interesting question: \"how to move the cells up and

Answer 1

Try this. hopefully, it can help

-(CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
    return collectionView.frame.size;
}

---

(For future readers, indeed you also typically need the other one ...)

-(CGSize) collectionView:(UICollectionView *)collectionView
     layout:(UICollectionViewLayout *)collectionViewLayout
     sizeForItemAtIndexPath:(NSIndexPath *)indexPath
    {
    return self.view.frame.size;
    }

-(UIEdgeInsets)collectionView:(UICollectionView *)collectionView
   layout:(UICollectionViewLayout*)collectionViewLayout
   insetForSectionAtIndex:(NSInteger)section
    {
    return UIEdgeInsetsMake(0,0,0,0);   //t,l,b,r
    }