{"provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/indiakilo/","provider_name":"Hatena Blog","categories":["Flutter","\u5165\u9580\u8005"],"url":"https://moblog.hatenablog.jp/entry/2023/09/18/180000","height":"190","blog_url":"https://moblog.hatenablog.jp/","blog_title":"MOB-LOG","published":"2023-09-18 18:00:00","type":"rich","version":"1.0","author_name":"indiakilo","image_url":null,"title":" Flutter\u3067Widget\u9077\u79fb\u3057\u305f\u3044\u304cBuildContext\u304c\u53c2\u7167\u3067\u304d\u306a\u3044\u3068\u304d\u2192 GlobalKey<State>\u3092navigatorKey\u306b\u6307\u5b9a\u3057\u3066\u30a2\u30d7\u30ea\u306e\u3069\u3053\u304b\u3089\u3067\u3082\u53c2\u7167\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmoblog.hatenablog.jp%2Fentry%2F2023%2F09%2F18%2F180000\" title=\" Flutter\u3067Widget\u9077\u79fb\u3057\u305f\u3044\u304cBuildContext\u304c\u53c2\u7167\u3067\u304d\u306a\u3044\u3068\u304d\u2192 GlobalKey&lt;State&gt;\u3092navigatorKey\u306b\u6307\u5b9a\u3057\u3066\u30a2\u30d7\u30ea\u306e\u3069\u3053\u304b\u3089\u3067\u3082\u53c2\u7167\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b - MOB-LOG\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","description":"TL;DR Flutter\u306b\u3066\u3001Navigator.of(context)\u3068\u3057\u3066\u30a6\u30a3\u30b8\u30a7\u30c3\u30c8\u3092\u9077\u79fb\u3059\u308b\u305f\u3081\u306b\u3001\u3044\u3064\u3067\u3082\u3069\u3053\u3067\u3082\u53c2\u7167\u3067\u304d\u308b\u6700\u65b0\u306eBuildContext\u3092\u4fdd\u6301\u3057\u305f\u5909\u6570\u304c\u6b32\u3057\u304b\u3063\u305f\u3002 \u21d2 MaterialApp\u306enavigatorKey\u306f\u3069\u3053\u304b\u3089\u3067\u3082\u53c2\u7167\u3067\u304d\u308b\u69d8\u5b50\u306a\u306e\u3067\u3001main()\u3067runApp\u3059\u308b\u3068\u304d\u3001\u5927\u672c\u3068\u306a\u308bMaterialApp\u306enavigatorKey\u306bGlobalKey<NavigatorState>\u3092\u6e21\u3057\u3066navigatorKey.currentState!\u304b\u3089\u6700\u65b0\u306eBuildContext\u3092\u53c2\u7167\u3059\u308b\u3002 \u3044\u304d\u3055\u3064 \u30ed\u30b0\u30a4\u30f3\u60c5\u5831\u3092\u76e3\u8996\u3059\u308b\u305f\u3081\u306b FirebaseAut\u2026","width":"100%"}