如何根据内容动态调整UICollectionViewCell的高度？

Question

What's the process for doing this?

I've discovered sizeForItemAtIndexPath but I'm not sure what I do in that method. Do I create a new UICollectionViewCell , add in my content, and then return the size of that cell?

Do I need AutoLayout turned on and constraints set? I apologize if this has been answered already. I've been scouring stackoverflow, but haven't quite found a solution that worked.

Answer 1

You need to:

1. setup Auto Layout constraints on the cell's contentView that, taken all in all, bind the left edge to the right edge, and the top edge to the bottom edge. This is how the cell will express the size it wants to be.

2. not implement sizeForItemAtIndexPath , since you will not be providing sizes on a per-cell basis.

3. set estimatedItemSize to some reasonably large value on your UICollectionViewFlowLayout object.

There is a repo with an example .