Can UICollectionView be flexed to dynamically render interfaces like this one below (Newsify for iPhone)?

enter image description here

Or can only predefined static layouts be rendered? I would want to layout based on the image dimensions (h x w), say small grids for small images and larger ones for big images, all decided at runtime based on the data I get from my datasource.

EDIT: Any good tutorials on complicated dynamic layouts like the one above?

iphone ios layout uicollectionview
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