ios uitableviewcell item equal height to superview storyboard interface builder - ios

Question

In order to get a consistent size ratio between my views and the device, I make an equal width/height constraint between the view and the superview. However, when designing a UITableViewCell or a UICollectionViewCell, I can't find this option in the interface builder. I need to set a ratio between a view inside a cell and the superview. What is the cleanest way to accomplish this behavior?

Answer 1

You cannot do this in the storyboard and have to do it in code:
For UITableView:
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
return tableView.frame.size.width;
}
For UICollectionView:
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
int columns = 2; // Change this to whatever you want
float width = collectionView.frame.size.width / columns;
return CGSizeMake(width, width);
}

Answer 2

If you want to make your UITableViewCell the same size as superview of its table, you should do this:
1) Setup constraints to UITableView to equal width/height to superview, also setup its origin (for example center x/y in superview).
2) Return size for cell:
case UITableViewCell:
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
return tableView.frame.size.height;
}
case UICollectionViewCell:
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath {
return collectionView.frame.size;
}