Awesome UI class ;)UICollectionView

AGENDA

• Introduction

• „Big picture”

• UICollectionView architecture, data model & interaction

• FlowLayout - basic tool (but powerful)

• Live Demo

• Questions

Łukasz DomaradzkiSoftware Research Engineer @ Jeppesen Polandcontact: lukasz.domaradzki@gmail.comwww: http://about.me/lukasz.domaradzki

„BIG PICTURE”

DO YOU KNOW OTHER APPS?

WHAT EXACTLY IS IT?

• UI class, similar to UITableView (not a replacement)

• very powerful (customizable)

• your UX/graphic designer will love it ;)

• available iOS 6.0+ (not only... more later)

O’rly?

ANATOMY

CellsSupplementary

Views

DecorationViews

Let’s dig inside.

CELLS• No predefined styles

(like in UITableView)

• New properties - selection & highlight

• New reuse format (improved)[cV registerClass: ...][cV registerNib: ...]

[cV dequeReusableCell...]

UICollectionViewCell

Background View

Selected Background View

Content View

ARCHITECTURE

VIEW (FLOW) LAYOUTCSS for your UICollectionView !

UICollectionViewLayout is an abstract base class for positioning cell views and their supplementary and decoration views. But rather than subclass this directly, most applications will opt to use or subclass UICollectionViewFlowLayout. Flow layouts cover the broad class of layouts with some notion of linearity, whether that's a single row or column or a grid.

nshipster.com

WHAT ABOUT IOS BELOW 6.0?

• PSTCollectionViewhttps://github.com/steipete/PSTCollectionView100% API replacement, available from iOS 4.3+

You know what time it is?

LIVE DEMO!

Sources:- WWDC2012

- Introducing CollectionViews- Advanced Collection Views and Building Custom Layouts

- NSHipster.com- RayWenderlich.com

Questions?Thanks for listening.