{"id":524,"date":"2022-02-22T16:29:25","date_gmt":"2022-02-22T07:29:25","guid":{"rendered":"https:\/\/engineering.webstudio168.jp\/?p=524"},"modified":"2022-03-18T11:34:57","modified_gmt":"2022-03-18T02:34:57","slug":"flutter-scaffold-class","status":"publish","type":"post","link":"https:\/\/engineering.webstudio168.jp\/blog\/flutter-scaffold-class\/","title":{"rendered":"Flutter\u306eScaffold\u30af\u30e9\u30b9\u3067\u4f7f\u3048\u308b\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u307e\u3068\u3081"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_88 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u6b21<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/flutter-scaffold-class\/#body\" >body<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/flutter-scaffold-class\/#bottomNavigationBar\" >bottomNavigationBar<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/flutter-scaffold-class\/#appBar\" >appBar<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/flutter-scaffold-class\/#drawer\" >drawer<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/flutter-scaffold-class\/#%E3%81%BE%E3%81%A8%E3%82%81\" >\u307e\u3068\u3081<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">Flutter\u306b\u304a\u3051\u308bScaffold\u30af\u30e9\u30b9\u306f\u753b\u9762\u69cb\u6210\u3092\u63cf\u753b\u3001\u5b9f\u88c5\u3059\u308b\u30af\u30e9\u30b9\u3067\u3059\u3002\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30ec\u30a4\u30a2\u30a6\u30c8\u3092\u4f5c\u308b\u305f\u3081\u306b\u306f\u6b20\u304b\u305b\u306a\u3044\u91cd\u8981\u306a\u30af\u30e9\u30b9\u3067\u3059\u306e\u3067\u3001\u3057\u3063\u304b\u308a\u62bc\u3055\u3048\u3066\u304a\u304d\u305f\u3044\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3068\u306f\u3044\u3048Scaffold\u30af\u30e9\u30b9\u3092\u5229\u7528\u3059\u308b\u969b\u306b\u7d50\u69cb\u81a8\u5927\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u3088\u304f\u4f7f\u3044\u305d\u3046\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u306b\u3064\u3044\u3066\u4f7f\u7528\u65b9\u6cd5\u3068\u3001\u5b9f\u969b\u306b\u5b9f\u88c5\u3057\u305f\u3068\u304d\u306e\u8868\u793a\u306b\u3064\u3044\u3066\u6574\u7406\u3057\u3066\u304a\u3053\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"body\"><span class=\"ez-toc-section\" id=\"body\"><\/span>body<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f55\u3092\u5dee\u3057\u7f6e\u3044\u3066\u3082\u307e\u305a\u3001\u753b\u9762\u306e\u4e3b\u4f53\u3068\u306a\u308b\u90e8\u5206\u306e\u63cf\u753b\u304c\u5fc5\u8981\u3067\u3059\u3002body\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u30ec\u30a4\u30a2\u30a6\u30c8\u306e\u6839\u5e79\u3092\u53f8\u308a\u307e\u3059\u3002Flutter\u306e<a href=\"https:\/\/api.flutter.dev\/flutter\/material\/Scaffold\/body.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a>\u3092\u898b\u3066\u3082\u975e\u5e38\u306b\u7c21\u7d20\u3067\u5206\u304b\u308a\u306b\u304f\u3044\u8a18\u8ff0\u3057\u304b\u306a\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u969b\u306e\u30b3\u30fc\u30c9\u3092\u898b\u305f\u65b9\u304c\u65e9\u3044\u3068\u601d\u3044\u307e\u3059\u306e\u3067\u3001\u3044\u3064\u3082\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u63b2\u8f09\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-dart\" data-file=\"main.dart\" data-lang=\"Dart\"><code>        body: Center(\n          child: Column(\n            mainAxisAlignment: MainAxisAlignment.center,\n            children: &lt;Widget&gt;[\n              const Text(\n                &#39;You have pushed the button this many times:&#39;,\n              ),\n              Text(\n                &#39;$_counter&#39;,\n                style: Theme.of(context).textTheme.headline4,\n              ),\n            ],\n          ),\n        ),<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">body\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u306f<code>Center()<\/code>\u306e\u4ed6\u306b\u3001<code>Row()<\/code>\u3001<code>Column()<\/code>\u3001<code>Container()<\/code>\u306e\u30e1\u30bd\u30c3\u30c9\u304c\u4f7f\u3048\u307e\u3059\u3002Flutter\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u306eCenter\u30af\u30e9\u30b9\u306e\u30bd\u30fc\u30b9\u3092\u898b\u3066\u307f\u308b\u3068\u6b21\u306e\u3088\u3046\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-dart\" data-file=\"basic.dart\" data-lang=\"Dart\"><code>\/\/\/  * [Align], which lets you arbitrarily position a child within itself,\n\/\/\/    rather than just centering it.\n\/\/\/  * [Row], a widget that displays its children in a horizontal array.\n\/\/\/  * [Column], a widget that displays its children in a vertical array.\n\/\/\/  * [Container], a convenience widget that combines common painting,\n\/\/\/    positioning, and sizing widgets.\n\/\/\/  * The [catalog of layout widgets](https:\/\/flutter.dev\/widgets\/layout\/).<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Row\u3092\u4f7f\u3046\u5834\u5408\u306f\u3001children\u30d7\u30ed\u30d1\u30c6\u30a3\uff08Center\u3067\u306fchild\u30d7\u30ed\u30d1\u30c6\u30a3\uff09\u3092\u4f7f\u3044\u3001\u6c34\u5e73\u306bchildren\u306b\u6307\u5b9a\u3057\u305fitem\u3092\u914d\u7f6e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Column\u3067\u3082\u540c\u3058\u304fchildren\u30d7\u30ed\u30d1\u30c6\u30a3\u304c\u5fc5\u8981\u306b\u306a\u308a\uff08Row\u3068\u540c\u3058\u304fChild\u6307\u5b9a\u3059\u308b\u3068\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\uff09\u3001\u5782\u76f4\u65b9\u5411\u306bitem\u3092\u914d\u7f6e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Container\u306f\u30a6\u30a3\u30b8\u30a7\u30c3\u30c8\u306e\u7d44\u307f\u5408\u308f\u305b\u3067\u3001\u30b5\u30a4\u30ba\u3084\u4f4d\u7f6e\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u8a66\u3057\u306b\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u306eCenter\u3092Container\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u6b21\u306e\u753b\u50cf\u306e\u3088\u3046\u306b\u30c6\u30ad\u30b9\u30c8\u304c\u5de6\u306b\u5bc4\u3063\u3066\u3057\u307e\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"397\" height=\"837\" src=\"https:\/\/engineering.webstudio168.jp\/blog\/wp-content\/uploads\/2022\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2022-02-22-150526.png\" alt=\"\" class=\"wp-image-526\" srcset=\"https:\/\/engineering.webstudio168.jp\/blog\/wp-content\/uploads\/2022\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2022-02-22-150526.png 397w, https:\/\/engineering.webstudio168.jp\/blog\/wp-content\/uploads\/2022\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2022-02-22-150526-142x300.png 142w\" sizes=\"auto, (max-width: 397px) 100vw, 397px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3067\u3059\u306e\u3067body\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u306f\u3001\u7279\u306b\u7406\u7531\u304c\u7121\u3044\u5834\u5408\u306f<code>Center()\u3092<\/code>\u547c\u3073\u51fa\u3057\u3066\u3042\u3052\u308c\u3070OK\u3060\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"bottomnavigationbar\"><span class=\"ez-toc-section\" id=\"bottomNavigationBar\"><\/span>bottomNavigationBar<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">bottomNavigationBar\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u540d\u524d\u306e\u901a\u308a\u3001\u753b\u9762\u306e\u6700\u4e0b\u90e8\u306b\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u3092\u4ed8\u3051\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3059\u3002\u30b9\u30de\u30db\u30a2\u30d7\u30ea\u3067\u306f\u3088\u304f\u898b\u304b\u3051\u308bUI\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"372\" height=\"124\" src=\"https:\/\/engineering.webstudio168.jp\/blog\/wp-content\/uploads\/2022\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2022-02-22-154935.png\" alt=\"\" class=\"wp-image-531\" srcset=\"https:\/\/engineering.webstudio168.jp\/blog\/wp-content\/uploads\/2022\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2022-02-22-154935.png 372w, https:\/\/engineering.webstudio168.jp\/blog\/wp-content\/uploads\/2022\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2022-02-22-154935-300x100.png 300w\" sizes=\"auto, (max-width: 372px) 100vw, 372px\" \/><figcaption>bottomNavigationBar<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306eUI\u3092\u5b9f\u88c5\u3059\u308b\u306b\u306f\u6ce8\u610f\u70b9\u304c\u3042\u308a\u307e\u3059\u3002\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u306b\u8868\u793a\u3059\u308b\u9805\u76ee\u304c2\u3064\u4ee5\u4e0a\u7121\u3044\u3068\u3001\u30d3\u30eb\u30c9\u6642\u306b\u6b21\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u304c\u51fa\u529b\u3055\u308c\u307e\u3059\u3002\u3064\u307e\u308a\u5185\u5305\u3059\u308bitem\u306f2\u3064\u4ee5\u4e0a\u8a18\u8ff0\u3057\u306a\u3044\u3068\u30c0\u30e1\u3060\u3068\u3044\u3046\u3053\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>_AssertionError (&#8216;package:flutter\/src\/material\/bottom_navigation_bar.dart&#8217;: Failed assertion: line 186 pos 15: &#8216;items.length &gt;= 2&#8217;: is not true.)<\/p><cite>Flutter\u30d3\u30eb\u30c9\u30a8\u30e9\u30fc<\/cite><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u6539\u9020\u3057\u305f\u30b3\u30fc\u30c9\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-dart\" data-file=\"main.dart\" data-lang=\"Dart\"><code>        bottomNavigationBar: BottomNavigationBar(\n          items: const &lt;BottomNavigationBarItem&gt;[\n            BottomNavigationBarItem(\n              icon: Icon(Icons.book),\n              activeIcon: Icon(Icons.book_online),\n              label: &#39;Book&#39;,\n              tooltip: &quot;This is a Book Page&quot;,\n              backgroundColor: Colors.blue,\n            ),\n            BottomNavigationBarItem(\n              icon: Icon(Icons.book),\n              activeIcon: Icon(Icons.book_online),\n              label: &#39;Book&#39;,\n              tooltip: &quot;This is a Book Page&quot;,\n              backgroundColor: Colors.blue,\n            ),\n          ],\n        )<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u307e\u307e\u3067\u306f\u30af\u30ea\u30c3\u30af\u306e\u6642\u306b\u52d5\u4f5c\u3057\u307e\u305b\u3093\u304c\u3001\u4eca\u56de\u306fUI\u306e\u5b9f\u88c5\u306e\u307f\u306b\u3068\u3069\u3081\u3066\u304a\u304d\u307e\u3059\u3002<br>\u5148\u307b\u3069\u306e\u30a8\u30e9\u30fc\u306b\u3064\u3044\u3066\u3067\u3059\u304c\u3001<code>BottomNavigationBarItem<\/code>\u304c\u7121\u3044\u5834\u5408\u30841\u3064\u306e\u5834\u5408\u306b\u52d5\u4f5c\u3057\u306a\u304f\u306a\u308a\u307e\u3059\u306e\u3067\u3001\u5fc5\u305a2\u3064\u4ee5\u4e0a\u3092\u542b\u3080\u3088\u3046\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3082<a href=\"https:\/\/api.flutter.dev\/flutter\/material\/Scaffold\/bottomNavigationBar.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a>\u304c\u30af\u3007\u3067\u3001\u4f55\u3082\u66f8\u3044\u3066\u306a\u3044\u306e\u3067Flutter\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u304b\u3089\u8aad\u307f\u89e3\u304f\u65b9\u304c\u65e9\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"appbar\"><span class=\"ez-toc-section\" id=\"appBar\"><\/span>appBar<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/api.flutter.dev\/flutter\/material\/Scaffold\/appBar.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\uff08\u7b11\uff09<\/a>\u306f\u30db\u30f3\u30c8\u3069\u3046\u306a\u3063\u3066\u3044\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u4f55\u4e00\u3064\u91cd\u8981\u306a\u60c5\u5831\u304c\u7121\u3044\u3067\u3059\u306d\u3002\u3060\u3093\u3060\u3093\u30a4\u30e9\u30a4\u30e9\u3057\u3066\u304d\u307e\u3059\u3002\u3061\u3087\u3063\u3068\u53e3\u304c\u60aa\u304f\u306a\u3063\u3066\u3057\u307e\u3063\u3066\u3059\u307f\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">appBar\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u30a2\u30d7\u30ea\u306e\u4e00\u756a\u4e0a\u306b\u8868\u793a\u3059\u308b\u5e2f\u30bf\u30a4\u30c8\u30eb\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"378\" height=\"154\" src=\"https:\/\/engineering.webstudio168.jp\/blog\/wp-content\/uploads\/2022\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2022-02-22-160331.png\" alt=\"\" class=\"wp-image-537\" srcset=\"https:\/\/engineering.webstudio168.jp\/blog\/wp-content\/uploads\/2022\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2022-02-22-160331.png 378w, https:\/\/engineering.webstudio168.jp\/blog\/wp-content\/uploads\/2022\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2022-02-22-160331-300x122.png 300w\" sizes=\"auto, (max-width: 378px) 100vw, 378px\" \/><figcaption>appBar<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u88c5\u306f\u975e\u5e38\u306b\u7c21\u5358\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-dart\" data-file=\"main.dart\" data-lang=\"Dart\"><code>        appBar: AppBar(\n          title: Text(widget.title),\n        ),<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u306b\u306ftitle\u30d7\u30ed\u30d1\u30c6\u30a3\u3057\u304b\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u4ed6\u306b\u3082<code>flexibleSpace: Image.network......<\/code>\u306e\u3088\u3046\u306a\u5f62\u3067\u3001\u30d8\u30c3\u30c0\u30fc\u306b\u753b\u50cf\u3092\u914d\u7f6e\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<a href=\"https:\/\/api.flutter.dev\/flutter\/material\/AppBar\/flexibleSpace.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a>\u3092\u53c2\u7167\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\uff08\u4f55\u306b\u3082\u66f8\u3044\u3066\u3042\u308a\u307e\u305b\u3093\u304c\uff09<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"drawer\"><span class=\"ez-toc-section\" id=\"drawer\"><\/span>drawer<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a2\u30d7\u30ea\u753b\u9762\u306e\u5de6\u304b\u3089\u30cb\u30e5\u30c3\u3068\u767b\u5834\u3059\u308b\u753b\u9762\uff08\u30d1\u30fc\u30c4\uff09\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u3053\u308c\u306f<a href=\"https:\/\/api.flutter.dev\/flutter\/material\/Scaffold\/drawer.html\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a>\u3092\u53c2\u7167\u3057\u3066\u3044\u305f\u3060\u3044\u3066\u5927\u4e08\u592b\u3067\u3059\u3002\u3080\u3057\u308d\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u898b\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3068\u6319\u52d5\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u8a18\u8ff0\u4f8b\uff08\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u3064\u3044\u3066\u306e\uff09\u3068\u3057\u3066\u306f\u3001<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-dart\" data-file=\"main.dart\" data-lang=\"Dart\"><code>      drawer: Drawer(\n        child: Center(\n          child: Column(\n            mainAxisAlignment: MainAxisAlignment.center,\n            children: &lt;Widget&gt;[\n              const Text(&#39;This is the Drawer&#39;),\n              ElevatedButton(\n                onPressed: _closeDrawer,\n                child: const Text(&#39;Close Drawer&#39;),\n              ),\n            ],\n          ),\n        ),\n      ),<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u306e\u3088\u3046\u306b\u66f8\u304d\u307e\u3059\u3002\u6ce8\u610f\u70b9\u3067\u3059\u304c\u3001drawer\u30d7\u30ed\u30d1\u30c6\u30a3\u66f8\u304f\u3060\u3051\u3067\u306f\u6a2a\u304b\u3089\u30cb\u30e5\u30c4\u3068\u306f\u306a\u308a\u307e\u305b\u3093\u3002\u516c\u5f0f\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f<code>openDrawer()<\/code>\u3068<code>pop()<\/code>\u306b\u3088\u3063\u3066\u958b\u9589\u304c\u5b9f\u88c5\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-dart\" data-file=\"main.dart\" data-lang=\"Dart\"><code>  void _openDrawer() {\n    _scaffoldKey.currentState!.openDrawer();\n  }\n\n  void _closeDrawer() {\n    Navigator.of(context).pop();\n  }<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u5404\u30e1\u30bd\u30c3\u30c9\u3092onPress\u6642\u306b\u5b9f\u884c\u3055\u305b\u308c\u3070OK\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u307e\u3068\u3081\"><span class=\"ez-toc-section\" id=\"%E3%81%BE%E3%81%A8%E3%82%81\"><\/span>\u307e\u3068\u3081<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0d\u5b9a\u671f\u306b\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u8ffd\u52a0\u3057\u3066\u3044\u304f\u4e88\u5b9a\u3067\u3059\u3002\u4f55\u304b\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u3042\u308c\u3070\u3054\u9023\u7d61\u304f\u3060\u3055\u3044\u3002<br>UI\u5468\u308a\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u9854\u306b\u306a\u308a\u307e\u3059\u306e\u3067\u3001\u3069\u3093\u306a\u3053\u3068\u304c\u5b9f\u88c5\u3067\u304d\u308b\u306e\u304b\u77e5\u3063\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u516c\u5f0f\u306e\u30aa\u30f3\u30e9\u30a4\u30f3\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u898b\u308b\u3088\u308a\u3082\u3001VS Code\u306a\u3069\u3067\u30d1\u30c3\u30b1\u30fc\u30b8\u5185\u306e\u30af\u30e9\u30b9\u3092\u76f4\u63a5\u8aad\u3093\u3060\u65b9\u304c\u53c2\u8003\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d1\u30c3\u30b1\u30fc\u30b8\u5185\u306e\u30af\u30e9\u30b9\u3092\u53c2\u7167\u3059\u308b\u65b9\u6cd5\u306f\u4e0b\u8a18\u306b\u307e\u3068\u3081\u3066\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u4f75\u305b\u3066\u8aad\u3093\u3067\u307f\u3066\u304f\u3060\u3055\u3044\u306d\u3002<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-qootechweb wp-block-embed-qootechweb\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"P1i2Qu1nRT\"><a href=\"https:\/\/engineering.webstudio168.jp\/blog\/vs-code-jump-to-class\/\">VS Code\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u4f4d\u7f6e\uff08\u30d5\u30a1\u30a4\u30eb\uff09\u306b\u4e00\u77ac\u3067\u98db\u3073\u78ba\u8a8d\u3059\u308b\u65b9\u6cd5<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u201cVS 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scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Flutter\u306b\u304a\u3051\u308bScaffold\u30af\u30e9\u30b9\u306f\u753b\u9762\u69cb\u6210\u3092\u63cf\u753b\u3001\u5b9f\u88c5\u3059\u308b\u30af\u30e9\u30b9\u3067\u3059\u3002\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30ec\u30a4\u30a2\u30a6\u30c8\u3092\u4f5c\u308b\u305f\u3081\u306b\u306f\u6b20\u304b\u305b\u306a\u3044\u91cd\u8981\u306a\u30af\u30e9\u30b9\u3067\u3059\u306e\u3067\u3001\u3057\u3063\u304b\u308a\u62bc\u3055\u3048\u3066\u304a\u304d\u305f\u3044\u3068\u3053\u308d\u3067\u3059\u3002 \u3068\u306f\u3044\u3048Scaffold\u30af [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":545,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[45],"tags":[47,36,48],"class_list":["post-524","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-flutter","tag-dart","tag-flutter","tag-48"],"_links":{"self":[{"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/posts\/524","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/comments?post=524"}],"version-history":[{"count":19,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/posts\/524\/revisions"}],"predecessor-version":[{"id":548,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/posts\/524\/revisions\/548"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/media\/545"}],"wp:attachment":[{"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/media?parent=524"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/categories?post=524"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/engineering.webstudio168.jp\/blog\/wp-json\/wp\/v2\/tags?post=524"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}