「Flutter/画像/grid表示」の版間の差分
提供: 初心者エンジニアの簡易メモ
(ページの作成:「==サンプル== img.dart class Img { String url = ""; } grid_page.dart <pre> List<Img> imgs = new List<Img>(); Img img = new Img(); img.url = "http://example.co...」) |
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行1: | 行1: | ||
==サンプル== | ==サンプル== | ||
img.dart | img.dart | ||
+ | <pre> | ||
class Img | class Img | ||
{ | { | ||
String url = ""; | String url = ""; | ||
} | } | ||
+ | </pre> | ||
grid_page.dart | grid_page.dart | ||
行43: | 行45: | ||
body: gridView | body: gridView | ||
); | ); | ||
+ | } | ||
</pre> | </pre> | ||
参考:https://flutter.ctrnost.com/basic/layout/gridview/ | 参考:https://flutter.ctrnost.com/basic/layout/gridview/ |
2020年1月16日 (木) 18:56時点における版
サンプル
img.dart
class Img { String url = ""; }
grid_page.dart
List<Img> imgs = new List<Img>(); Img img = new Img(); img.url = "http://example.com/hoge.png"; imgs.add(img); imgs.add(img); imgs.add(img); imgs.add(img); @override Widget build(BuildContext context) { GridView gridView = GridView.builder( itemCount: imgs.length, gridDelegate: SliverGridDelegateWithFixedCrossAxisCount( crossAxisCount: 3, ), itemBuilder: (BuildContext context, int index) { return Image.network(imgs[index].url, // height: 100.0, // width: 70.0, fit: BoxFit.cover); } ); return Scaffold( appBar: AppBar( backgroundColor: Colors.blue.withOpacity(0.3), elevation: 0.0, title: Text("画像一覧", style: TextStyle( fontSize: 16, locale: Locale("ja", "JP") ) ), ), extendBodyBehindAppBar: true, body: gridView ); }