wooster / CollectionViewResizing

Experiments with flexible collection view cells and orientation changes.

Collection View Resizing

This is a simple project to show what happens with different approaches to resizing UICollectionViewCells with resizable text on rotation.

In ViewController.m, there are a few different approaches implemented, each with their own pitfalls. You can swap between them by changing the SIZING_APPROACH value:

typedef NS_ENUM(NSInteger, SizingApproach) {
    SizingApproachNone,
    SizingApproachAddConstraintCollectionView,
    SizingApproachAddConstraintCollectionViewContentView,
    SizingApproachManualCalculation,
    SizingApproachPreferredMaxLayoutWidth,
};

#define SIZING_APPROACH SizingApproachPreferredMaxLayoutWidth

The key for getting this to work properly for UILabels is preferredMaxLayoutWidth, which unfortunately can't be manipulated via layout constraints.