Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
a lighter reusable cell
Search
Pin-Shih Wang
October 01, 2012
Programming
0
58
a lighter reusable cell
for TableView & CollectionView
https://github.com/wpsteak/MVCTableViewExample
Pin-Shih Wang
October 01, 2012
Tweet
Share
More Decks by Pin-Shih Wang
See All by Pin-Shih Wang
iOS Extension
wpsteak
4
460
A tip for using magical record
wpsteak
0
120
CI with Git Flow
wpsteak
2
220
Test With Xcode Server
wpsteak
0
74
Other Decks in Programming
See All in Programming
Result型で“失敗”を型にするPHPコードの書き方
kajitack
4
380
#kanrk08 / 公開版 PicoRubyとマイコンでの自作トレーニング計測装置を用いたワークアウトの理想と現実
bash0c7
1
430
Team topologies and the microservice architecture: a synergistic relationship
cer
PRO
0
1k
Blazing Fast UI Development with Compose Hot Reload (droidcon New York 2025)
zsmb
1
210
Team operations that are not burdened by SRE
kazatohiei
1
210
なぜ「共通化」を考え、失敗を繰り返すのか
rinchoku
1
510
関数型まつりレポート for JuliaTokai #22
antimon2
0
150
Kotlin エンジニアへ送る:Swift 案件に参加させられる日に備えて~似てるけど色々違う Swift の仕様 / from Kotlin to Swift
lovee
1
260
XP, Testing and ninja testing
m_seki
3
190
LT 2025-06-30: プロダクトエンジニアの役割
yamamotok
0
440
型付きアクターモデルがもたらす分散シミュレーションの未来
piyo7
0
810
生成AIで日々のエラー調査を進めたい
yuyaabo
0
650
Featured
See All Featured
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
soudai
PRO
181
53k
Producing Creativity
orderedlist
PRO
346
40k
Six Lessons from altMBA
skipperchong
28
3.8k
Stop Working from a Prison Cell
hatefulcrawdad
270
20k
How to Think Like a Performance Engineer
csswizardry
24
1.7k
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
danielanewman
229
22k
Facilitating Awesome Meetings
lara
54
6.4k
Designing for Performance
lara
609
69k
CSS Pre-Processors: Stylus, Less & Sass
bermonpainter
357
30k
Building Better People: How to give real-time feedback that sticks.
wjessup
367
19k
Gamification - CAS2011
davidbonilla
81
5.3k
The Invisible Side of Design
smashingmag
299
51k
Transcript
a lighter reusable cell for TableView & CollectionView @wpsteak
None
TableView
ViewController TableView
ViewController TableView DataSource
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource TableCell
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get Cell
TableCell
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get Cell
TableCell
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get Cell
Create UILabel1 TableCell
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get Cell
Create UILabel1 Create UILabel2 TableCell
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get Cell
Create UILabel1 Create UILabel2 Create Image1 TableCell
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get Cell
Create UILabel1 Create UILabel2 Create Image1 Create Image2 TableCell
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get Cell
Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon TableCell
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get Cell
Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon return Cell TableCell
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get Cell
Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon return Cell TableCell
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get Cell
Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon return Cell TableCell
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get Cell
Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon return Cell 10 Cells? TableCell
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get Cell
Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon return Cell 10 Cells? 100 Cells? TableCell
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get Cell
Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon return Cell 10 Cells? 100 Cells? 1000 Cells? TableCell
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get Cell
Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon return Cell 10 Cells? 100 Cells? 1000 Cells? Add/remove subview every time? TableCell
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get Cell
Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon return Cell 10 Cells? 100 Cells? 1000 Cells? Add/remove subview every time? TableCell
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get Cell
Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon return Cell 10 Cells? 100 Cells? 1000 Cells? Add/remove subview every time? TableCell <reuse>
Step1 move logic into cell
None
TableView
ViewController TableView
ViewController TableView DataSource
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell Create UILabel1
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell Create UILabel1 Create UILabel2
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell Create UILabel1 Create UILabel2 Create Image1
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell Create UILabel1 Create UILabel2 Create Image1 Create Image2
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon return Cell
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon return Cell
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon return Cell
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon return Cell 10 Cells?
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon return Cell 10 Cells? 100 Cells?
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon return Cell 10 Cells? 100 Cells? 1000 Cells?
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon return Cell 10 Cells? 100 Cells? 1000 Cells? Add/remove subview every time?
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon return Cell 10 Cells? 100 Cells? 1000 Cells? Add/remove subview every time? <reuse>
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon return Cell 10 Cells? 100 Cells? 1000 Cells? <reuse>
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon return Cell 10 Cells? 100 Cells? 1000 Cells? <reuse> prepareForReuse
Step2 split logics
TableViewCell / CollectionViewCell • Init UI • PrepareForReuse (reset UI)
• SetupContent with DataModel (set data)
None
Controller
Model Controller
Model Controller PrepareDataList Model Model Model
TableCell Model Controller PrepareDataList Model Model Model
TableCell Model Controller PrepareDataList Model Model Model SetupContent Model Update
UI
TableCell Model Controller PrepareDataList Model Model Model prepare data handle
user interaction data display SetupContent Model Update UI
- (void)initControl { init UI… } - (void)setupContent:(id)data { update
UI with new content } - (void)prepareForReuse { [super prepareForReuse]; reset UI reset logic } Sample
None
TableView
ViewController TableView
ViewController TableView DataSource
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource
ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell (init Control at first time) Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell (init Control at first time) Create UILabel1 Create UILabel2 Create Image1 Create Image2 Create Icon set Data
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell prepareForReuse setup Content update UI set Data
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell return Cell prepareForReuse setup Content update UI set Data
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell return Cell prepareForReuse setup Content update UI set Data
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell return Cell 10 Cells prepareForReuse setup Content update UI set Data
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell return Cell 10 Cells 100 Cells prepareForReuse setup Content update UI set Data
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell return Cell 10 Cells 100 Cells 1000 Cells prepareForReuse setup Content update UI set Data
TableCell ViewController - (UITableViewCell *) tableView: cellForRowAtIndexPath: TableView DataSource Get
Cell return Cell 10 Cells 100 Cells 1000 Cells <reuse> prepareForReuse setup Content update UI set Data
• init UIView once and only once • reset UI
and necessary logic in prepareForReuse: method
End