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
Flutter List View 概要
Search
najeira
May 31, 2018
Technology
0
1.1k
Flutter List View 概要
najeira
May 31, 2018
Tweet
Share
More Decks by najeira
See All by najeira
Flutter with Platform
najeira
4
1.4k
Google I/O 2019 Extended Tokyo - Flutter
najeira
1
180
Flutter APP DOJO 2019-04
najeira
1
190
Flutterとの1年
najeira
4
1.5k
Flutter / Google I/O 2018 報告会 信州
najeira
0
300
仕組みを知れば怖くない! Flutter入門
najeira
16
7.9k
FlutterでAndroid/iOS両対応のアプリ開発
najeira
0
4.5k
Google I/O 2017 報告会 Firebase/Cloud
najeira
1
170
Google I/O 2017 報告会 Flutter/Dart
najeira
1
320
Other Decks in Technology
See All in Technology
改めてAWS WAFを振り返る~業務で使うためのポイント~
masakiokuda
2
270
ビズリーチが挑む メトリクスを活用した技術的負債の解消 / dev-productivity-con2025
visional_engineering_and_design
3
7.8k
Delta airlines®️ USA Contact Numbers: Complete 2025 Support Guide
airtravelguide
0
340
無意味な開発生産性の議論から抜け出すための予兆検知とお金とAI
i35_267
6
13k
American airlines ®️ USA Contact Numbers: Complete 2025 Support Guide
airhelpsupport
0
390
赤煉瓦倉庫勉強会「Databricksを選んだ理由と、絶賛真っ只中のデータ基盤移行体験記」
ivry_presentationmaterials
2
370
面倒な作業はAIにおまかせ。Flutter開発をスマートに効率化
ruideengineer
0
260
自律的なスケーリング手法FASTにおけるVPoEとしてのアカウンタビリティ / dev-productivity-con-2025
yoshikiiida
2
17k
品質と速度の両立:生成AI時代の品質保証アプローチ
odasho
1
380
MUITにおける開発プロセスモダナイズの取り組みと開発生産性可視化の取り組みについて / Modernize the Development Process and Visualize Development Productivity at MUIT
muit
2
17k
いつの間にか入れ替わってる!?新しいAWS Security Hubとは?
cmusudakeisuke
0
130
AWS Organizations 新機能!マルチパーティ承認の紹介
yhana
1
280
Featured
See All Featured
ReactJS: Keep Simple. Everything can be a component!
pedronauck
667
120k
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
mongodb
46
9.6k
Evolution of real-time – Irina Nazarova, EuRuKo, 2024
irinanazarova
8
820
It's Worth the Effort
3n
185
28k
Docker and Python
trallard
44
3.5k
How STYLIGHT went responsive
nonsquared
100
5.6k
Why You Should Never Use an ORM
jnunemaker
PRO
58
9.4k
Building Flexible Design Systems
yeseniaperezcruz
328
39k
jQuery: Nuts, Bolts and Bling
dougneiner
63
7.8k
Building Better People: How to give real-time feedback that sticks.
wjessup
367
19k
Become a Pro
speakerdeck
PRO
29
5.4k
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
eileencodes
26
2.9k
Transcript
Flutter List View Flutter Meetup Tokyo 2018/05/29 @najeira Flutter List
View 1
Row, Column Flutter List View 2
Column 縦方向のリスト ※Row は横方向 Flutter List View 3
Column new Column( children: <Widget>[ new ListTile( leading: new Icon(Icons.map),
title: new Text('Map'), ), ... ], ), Flutter List View 4
ListView 単純なリスト Flutter List View 5
ListView new ListView( children: <Widget>[ new ListTile( leading: new Icon(Icons.map),
title: new Text('Map'), ), ... ], ), ※child は ListTile でなくとも何でもよい Flutter List View 6
Column or ListView 画面に収まる場合はColumn スクロー ルが必要な場合はListView Flutter List View 7
ListView 数が多い場合は children を生成せず builder を使う new ListView.builder( itemCount: 100,
itemBuilder: (BuildContext context, int index) { return new ListTile( title: new Text('$index'), ); }, ), ※ 必要になったときに itemBuilder が呼ばれるので child の生成を lazy にできる Flutter List View 8
GridView Flutter List View 9
GridView new GridView( gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(cros children: <Widget>[ new Container(
color: Colors.red, alignment: Alignment.center, child: new Text('red', style: style), ), ], ... ), Flutter List View 10
GridView デフォルトだと正方形のグリッドになる gridDelegate に渡している SliverGridDelegateWithFixedCrossAxisCount の childAspectRatio で縦横比率は変えられる Flutter List
View 11
GridView SliverGridDelegate と SliverGridLayout を実装すれば より細かいコントロー ルが可能 Flutter List View
12
独自GridView の例 Flutter List View 13
Sliver Flutter List View 14
Sliver 日本語だと「 小片」 とか「 細片」 とか「 一部」? ListView やGridView より、
いろいろ出来る 低レイヤの機能 ListView やGridView も内部ではSliver を使っている Flutter List View 15
SliverList new CustomScrollView( slivers: <Widget>[ new SliverList( delegate: new SliverChildListDelegate(
<Widget>[ new ListTile( leading: new Icon(Icons.map), title: new Text('Map'), ), .... ※ 最初のListView と同等のUI Flutter List View 16
Header 例えば見出しなど Flutter List View 17
Header CustomScrollView は sliver のリストを受け取る new CustomScrollView( slivers: <Widget>[ new
SliverToBoxAdapter( child: new Text(" リストの見出し"), ), new SliverList( delegate: new SliverChildListDelegate( <Widget>[ new ListTile( leading: new Icon(Icons.map), title: new Text('Map'), ), .... Flutter List View 18
SliverAppBar new CustomScrollView( slivers: <Widget>[ new SliverAppBar( title: new Text('SliverAppBar'),
floating: true, ), new SliverList( delegate: new SliverChildBuilderDelegate( (BuildContext context, int index) { return new MyRow( ... ); }, childCount: 1000, ... Flutter List View 19
リスト関連のWidget Column ListView GridView CustomScrollView Sliver Sliver**Delegate Flutter List View
20