{"id":555,"date":"2022-02-22T23:01:46","date_gmt":"2022-02-22T14:01:46","guid":{"rendered":"https:\/\/engineering.webstudio168.jp\/?p=555"},"modified":"2022-02-22T23:01:46","modified_gmt":"2022-02-22T14:01:46","slug":"flutter-local-storage","status":"publish","type":"post","link":"https:\/\/engineering.webstudio168.jp\/blog\/flutter-local-storage\/","title":{"rendered":"Flutter\u3067\u30ed\u30fc\u30ab\u30eb\u30b9\u30c8\u30ec\u30fc\u30b8\uff08\u7aef\u672b\u5185\uff09\u306b\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 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-local-storage\/#%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB%E3%82%92%E8%AA%AD%E3%81%BF%E6%9B%B8%E3%81%8D%E3%81%95%E3%81%9B%E3%82%8B\" >\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u66f8\u304d\u3055\u305b\u308b<\/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-local-storage\/#SQLite%E3%82%92%E5%88%A9%E7%94%A8%E3%81%99%E3%82%8B\" >SQLite\u3092\u5229\u7528\u3059\u308b<\/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-local-storage\/#SQLCipher%E3%82%92%E5%88%A9%E7%94%A8%E3%81%99%E3%82%8B\" >SQLCipher\u3092\u5229\u7528\u3059\u308b<\/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-local-storage\/#SharedPreferences%E3%82%92%E5%88%A9%E7%94%A8%E3%81%99%E3%82%8B\" >SharedPreferences\u3092\u5229\u7528\u3059\u308b<\/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-local-storage\/#Localstore%E3%82%92%E5%88%A9%E7%94%A8%E3%81%99%E3%82%8B\" >Localstore\u3092\u5229\u7528\u3059\u308b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/flutter-local-storage\/#%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\u5074\u304b\u3089\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u672c\u4f53\u306e\u30ed\u30fc\u30ab\u30eb\u30b9\u30c8\u30ec\u30fc\u30b8\u306b\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u901a\u308a\u304b\u3042\u308a\u307e\u3059\u3002\u30e1\u30b8\u30e3\u30fc\u306a\u3084\u308a\u65b9\u306f\u4e0b\u8a18\u306e\u30d1\u30bf\u30fc\u30f3\u306b\u5206\u985e\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u30d5\u30a1\u30a4\u30eb\u81ea\u4f53\u306e\u8aad\u307f\u53d6\u308a\u3068\u66f8\u304d\u8fbc\u307f<\/li><li>SQLite\u3092\u5229\u7528\u3059\u308b<\/li><li>SQLCipher\u3092\u5229\u7528\u3059\u308b<\/li><li>SharedPreferences\u3092\u5229\u7528\u3059\u308b<\/li><li>Localstore\u3092\u5229\u7528\u3059\u308b<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u66f8\u304d\u3055\u305b\u308b\"><span class=\"ez-toc-section\" id=\"%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB%E3%82%92%E8%AA%AD%E3%81%BF%E6%9B%B8%E3%81%8D%E3%81%95%E3%81%9B%E3%82%8B\"><\/span>\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u66f8\u304d\u3055\u305b\u308b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ed6\u306e\u65b9\u6cd5\u3068\u540c\u69d8\u306b\u3053\u306e\u624b\u6cd5\u3082<a href=\"https:\/\/pub.dev\/packages\/path_provider\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">path_provider<\/a>\u3068\u3044\u3046\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u4f7f\u3044\u307e\u3059\u3002path_provider\u3068dart:io\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f75\u7528\u3057\u3066\u3001\u30ed\u30fc\u30ab\u30eb\u306b\u30d5\u30a1\u30a4\u30eb\u3092\u66f8\u304d\u8fbc\u3093\u3060\u308a\u3001\u53c2\u7167\u3057\u305f\u308a\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<br>\uff08\u53c2\u8003\uff1a<a href=\"https:\/\/docs.flutter.dev\/cookbook\/persistence\/reading-writing-files\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/docs.flutter.dev\/cookbook\/persistence\/reading-writing-files<\/a>\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">path_provider\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u306e\u4ed5\u65b9\u306f<a href=\"https:\/\/pub.dev\/packages\/path_provider\/install\">https:\/\/pub.dev\/packages\/path_provider\/install<\/a>\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5927\u307e\u304b\u306a\u6d41\u308c\u306f<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>\u30ed\u30fc\u30ab\u30eb\u30d1\u30b9\u3092\u7279\u5b9a\uff08\u691c\u77e5\uff09\u3059\u308b<\/li><li>\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\u3092\u53c2\u7167\u3059\u308b<\/li><li>\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u66f8\u304d<\/li><\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u3068\u306a\u308a\u307e\u3059\u3002Flutter\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u306e\u90e8\u5206\u3060\u3051\u629c\u304d\u51fa\u3059\u3068\u3001<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-dart\" data-file=\"main.dart\" data-lang=\"Dart\"><code>import &#39;dart:async&#39;;\nimport &#39;dart:io&#39;;\n\/\/ \u7701\u7565\nimport &#39;package:path_provider\/path_provider.dart&#39;;\n\n\/\/ \u7701\u7565\nclass CounterStorage {\n  Future&lt;String&gt; get _localPath async {\n    final directory = await getApplicationDocumentsDirectory();\n\n    return directory.path;\n  }\n\n  Future&lt;File&gt; get _localFile async {\n    final path = await _localPath;\n    return File(&#39;$path\/counter.txt&#39;);\n  }\n\n  Future&lt;int&gt; readCounter() async {\n    try {\n      final file = await _localFile;\n\n      \/\/ Read the file\n      final contents = await file.readAsString();\n\n      return int.parse(contents);\n    } catch (e) {\n      \/\/ If encountering an error, return 0\n      return 0;\n    }\n  }\n\n  Future&lt;File&gt; writeCounter(int counter) async {\n    final file = await _localFile;\n\n    \/\/ Write the file\n    return file.writeAsString(&#39;$counter&#39;);\n  }\n}\n\/\/ \u4ee5\u4e0b\u7701\u7565<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3068\u3044\u3046\u3088\u3046\u306a\u8a18\u8ff0\u65b9\u6cd5\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u3093\u306a\u306b\u96e3\u3057\u3044\u3053\u3068\u306f\u3057\u3066\u3044\u306a\u3044\u3067\u3059\u306d\u3002<br>\u30d5\u30a1\u30a4\u30eb\u306e\u4fdd\u5b58\u306a\u3069\u306f\u3001\u30aa\u30d5\u30e9\u30a4\u30f3\u3067\u6587\u7ae0\u3092\u8aad\u3081\u308b\u3088\u3046\u306a\u30a2\u30d7\u30ea\u306b\u6d3b\u8e8d\u3057\u305d\u3046\u3067\u3059\u3002\u5358\u7d14\u306b\u30ad\u30fc\u3068\u5024\u3060\u3051\u3092\u4fdd\u5b58\u3057\u305f\u3044\u5834\u5408\u306b\u306f\u5411\u3044\u3066\u3044\u306a\u3044\uff08\u3061\u3087\u3063\u3068\u5927\u304c\u304b\u308a\u3059\u304e\u308b\u304b\u306a\uff09\u3068\u3044\u3046\u5370\u8c61\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"sqlite\u3092\u5229\u7528\u3059\u308b\"><span class=\"ez-toc-section\" id=\"SQLite%E3%82%92%E5%88%A9%E7%94%A8%E3%81%99%E3%82%8B\"><\/span>SQLite\u3092\u5229\u7528\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a2\u30d7\u30ea\u5236\u4f5c\u8005\u306b\u306f\u99b4\u67d3\u307f\u304c\u6df1\u3081\u306aSQLite\u3082\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002React Native\u3067\u3082\u4f7f\u3048\u307e\u3059\u306d\u3002\u30a2\u30d7\u30ea\u958b\u767a\u306e\u73fe\u5834\u3067\u306f\u4e00\u756a\u30dd\u30d4\u30e5\u30e9\u30fc\u306a\u65b9\u6cd5\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SQLite\u3092\u5229\u7528\u3059\u308b\u305f\u3081\u306b\u306f<a href=\"https:\/\/github.com\/tekartik\/sqflite\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">sqflite<\/a>\u3068\u3044\u3046\u30d1\u30c3\u30b1\u30fc\u30b8\u304c\u5fc5\u8981\u3067\u3059\u3002\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u306f<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>flutter pub add sqflite<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3067\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3082\u3061\u308d\u3093SQLite\u3067\u3059\u306e\u3067DB\u306bCRUD\uff08Create, Read, Update, Delete\uff09\u3057\u3066\u3001\u30ed\u30fc\u30ab\u30eb\u3078\u30c7\u30fc\u30bf\u3092\u683c\u7d0d\u3057\u305f\u308a\u53d6\u308a\u51fa\u3057\u305f\u308a\u51fa\u6765\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u305f\u3060\u3001\u6ce8\u610f\u3059\u3079\u304d\u306a\u306e\u306fSQLite\u306f\u30c7\u30d0\u30a4\u30b9\uff08\u5b9f\u6a5f\uff09\u3067\u52d5\u4f5c\u3059\u308b\u305f\u3081\u3001<strong>\u30c6\u30b9\u30c8\u74b0\u5883\u3067\u30c6\u30b9\u30c8\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093<\/strong>\u3002\u305d\u3053\u3067\u3001<a href=\"https:\/\/pub.dev\/packages\/sqflite_common_ffi\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">sqflite_common_ffi<\/a>\u3068\u3044\u3046\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u30c6\u30b9\u30c8\u6bb5\u968e\u3067\u4f7f\u7528\u3057\u307e\u3059\u3002ffi\u3068\u3044\u3046\u306e\u306f\uff08\u304a\u305d\u3089\u304f\uff09Foreign Function Interface\u306e\u7565\u3067\u5b9f\u6a5f\u3068\u306f\u5225\u306e\u30c7\u30d0\u30a4\u30b9\uff08\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\uff09\u3067\u52d5\u304f\u3053\u3068\u3092\u76ee\u7684\u3068\u3057\u3066\u4f5c\u3089\u308c\u305f\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u610f\u5473\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">sqflite_common_ffi\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u65b9\u6cd5\u306f<a href=\"https:\/\/pub.dev\/packages\/sqflite_common_ffi\/install\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/pub.dev\/packages\/sqflite_common_ffi\/install<\/a>\u306b\u66f8\u304b\u308c\u3066\u3044\u307e\u3059\u306e\u3067\u305d\u3061\u3089\u3092\u898b\u306a\u304c\u3089\u8a66\u3057\u3066\u307f\u3066\u4e0b\u3055\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"sqlcipher\u3092\u5229\u7528\u3059\u308b\"><span class=\"ez-toc-section\" id=\"SQLCipher%E3%82%92%E5%88%A9%E7%94%A8%E3%81%99%E3%82%8B\"><\/span>SQLCipher\u3092\u5229\u7528\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">iphone\u3084ipad\u306e\u30a2\u30d7\u30ea\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306f\u3001\u6697\u53f7\u5316\u3092\u3057\u305f\u65b9\u304c\u826f\u3044\u3068\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5bfe\u7b56\u3057\u306a\u3044\u3068\u4e2d\u8eab\u304c\u898b\u3089\u308c\u3066\u3057\u307e\u3046\u3053\u3068\u304c\u3042\u308b\u305f\u3081\u3067\u3059\u3002\u305d\u308c\u3092\u9632\u6b62\u3059\u308b\u305f\u3081\u306b<a href=\"https:\/\/www.zetetic.net\/sqlcipher\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">SQLCipher<\/a>\u304c\u4f7f\u308f\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3060\u3001\u30e9\u30a4\u30bb\u30f3\u30b9\u306b\u6ce8\u610f\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SQLCipher\u306fBSD\u30e9\u30a4\u30bb\u30f3\u30b9\u3067\u5546\u7528\u3067\u3082\u7121\u6599\u3067\u5229\u7528\u51fa\u6765\u307e\u3059\u304c\u3001\u5ff5\u306e\u305f\u3081<a href=\"https:\/\/www.zetetic.net\/sqlcipher\/license\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">SQLCipher\u306e\u30e9\u30a4\u30bb\u30f3\u30b9<\/a>\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\uff08BSD\u30e9\u30a4\u30bb\u30f3\u30b9\u306b\u3064\u3044\u3066\u3061\u3087\u3063\u3068\u81ea\u4fe1\u7121\u3044\u306e\u3067\u3054\u81ea\u8eab\u3067\u5224\u65ad\u3057\u3066\u304f\u3060\u3055\u3044\u2026\u2026\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.zetetic.net\/sqlcipher\/buy\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">SQLCipher Commercial Edition<\/a>\u3068\u3044\u3046\u306e\u3082\u3042\u308a\u3001\u3053\u3061\u3089\u306f\u6709\u6599\u3067\u30b5\u30dd\u30fc\u30c8\u3092\u53d7\u3051\u3089\u308c\u308b\u3068\u3044\u3046\u3082\u306e\u3067\u3059\u3002\u3054\u81ea\u8eab\u3067\u5b8c\u7d50\u3067\u304d\u308b\u5834\u5408\u306f<a href=\"https:\/\/www.zetetic.net\/sqlcipher\/open-source\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">SQLCipher Community Edition<\/a>\u3067\u7121\u6599\u3067\u4f7f\u3048\u308b\u306f\u305a\u3067\u3059\u3002\uff08\u9593\u9055\u3063\u3066\u3044\u307e\u3057\u305f\u3089\u3054\u9023\u7d61\u3044\u305f\u3060\u3051\u308b\u3068\u52a9\u304b\u308a\u307e\u3059\uff01\uff09<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"sharedpreferences\u3092\u5229\u7528\u3059\u308b\"><span class=\"ez-toc-section\" id=\"SharedPreferences%E3%82%92%E5%88%A9%E7%94%A8%E3%81%99%E3%82%8B\"><\/span>SharedPreferences\u3092\u5229\u7528\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/github.com\/flutter\/plugins\/tree\/master\/packages\/shared_preferences\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">SharedPreferences<\/a>\u306f\u6bd4\u8f03\u7684\u5358\u7d14\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u306b\u3057\u304b\u5bfe\u5fdc\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u8a2d\u5b9a\u306a\u3069\u306b\u7528\u3044\u3089\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u30d1\u30c3\u30b1\u30fc\u30b8\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Key\uff08\u30ad\u30fc\uff09\u3068\u5bfe\u306b\u306a\u308bValue\uff08\u30d0\u30ea\u30e5\u30fc\uff09\u3092\u7aef\u672b\u5185\u306b\u4fdd\u6301\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5229\u7528\u51fa\u6765\u308b\u578b\u306f\u3001<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>String<\/li><li>int<\/li><li>float<\/li><li>long<\/li><li>boolean<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u306b\u9650\u3089\u308c\u307e\u3059\u306e\u3067\u3001\u305d\u3053\u307e\u3067\u6c4e\u7528\u6027\u306e\u9ad8\u3044\u30d1\u30c3\u30b1\u30fc\u30b8\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002Value\u306b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5165\u308c\u305f\u3044\u5834\u5408\u306a\u3069\u306f\u5225\u306e\u65b9\u6cd5\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\u3002\u3061\u306a\u307f\u306b\u4fdd\u5b58\u3057\u305f\u30c7\u30fc\u30bf\u306fXML\u5f62\u5f0f\u3067\u8aad\u307f\u66f8\u304d\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"localstore\u3092\u5229\u7528\u3059\u308b\"><span class=\"ez-toc-section\" id=\"Localstore%E3%82%92%E5%88%A9%E7%94%A8%E3%81%99%E3%82%8B\"><\/span>Localstore\u3092\u5229\u7528\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/pub.dev\/packages\/localstore\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">LocalStore<\/a>\u306fJSON\u30d9\u30fc\u30b9\u306e\u30b9\u30c8\u30ec\u30fc\u30b8\u30d1\u30c3\u30b1\u30fc\u30b8\u3067\u3059\u3002NoSQL\u3092\u63a1\u7528\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u6271\u3044\u304c\u7c21\u7d20\u3067\u6bd4\u8f03\u7684\u99b4\u67d3\u307f\u3084\u3059\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5229\u7528\u65b9\u6cd5\u306f\u516c\u5f0f\u30da\u30fc\u30b8\u3092\u898b\u308b\u3068\u3001\u307e\u305amain()\u306e\u4e2d\u3067WidgetsFlutterBinding.ensureInitialized();\u3092\u547c\u3073\u51fa\u3057\u3066\u521d\u671f\u5316\u3055\u305b\u307e\u3059\u3002\uff08\u203bimport\u306b\u3064\u3044\u3066\u306f\u5f8c\u8ff0\uff09<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-dart\" data-file=\"main.dart\" data-lang=\"Dart\"><code>void main() {\n  WidgetsFlutterBinding.ensureInitialized();\n  runApp(MyApp());\n}<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u95a2\u9023\u30d1\u30c3\u30b1\u30fc\u30b8\u3092import\u3057\u306a\u3044\u3068\u4f7f\u3048\u306a\u3044\u306e\u3067\u3001import\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-dart\" data-file=\"main.dart\" data-lang=\"Dart\"><code>import &#39;package:flutter\/material.dart&#39;;\nimport &#39;package:localstore\/localstore.dart&#39;;<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u3044\u305f\u3044\u5834\u6240\u3067\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u6210\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-dart\" data-file=\"main.dart\" data-lang=\"Dart\"><code>final db = Localstore.instance;<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u521d\u671f\u8d77\u52d5\u306e\u969b\u306f\u3001\u30c7\u30fc\u30bf\u3092\u4f5c\u6210\u3002<br><code>db.collection('todos').doc(id).set()<\/code>\u3067\u30c7\u30fc\u30bf\u3092\u30bb\u30c3\u30c8\u51fa\u6765\u307e\u3059\u3002<br>\u203b\u30a2\u30d7\u30ea\u3092\u958b\u3044\u305f\u5ea6\u306b\u6bce\u56de\u2193\u306e\u51e6\u7406\u3092\u3057\u3061\u3083\u3046\u3068\u6bce\u56de\u521d\u671f\u5316\u3055\u308c\u307e\u3059\u306e\u3067\u6ce8\u610f\u2026\u2026<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-dart\" data-file=\"main.dart\" data-lang=\"Dart\"><code>\/\/ gets new id\nfinal id = db.collection(&#39;todos&#39;).doc().id;\n\n\/\/ save the item\ndb.collection(&#39;todos&#39;).doc(id).set({\n  &#39;title&#39;: &#39;Todo title&#39;,\n  &#39;done&#39;: false\n});<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c7\u30fc\u30bf\u306e\u53d6\u308a\u51fa\u3057\u65b9\u306f<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-dart\" data-file=\"main.dart\" data-lang=\"Dart\"><code>final data = await db.collection(&#39;todos&#39;).doc(id).get();<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3068\u3001\u3044\u305f\u3063\u3066\u30b7\u30f3\u30d7\u30eb\u3067\u3059\u306d\u3002<br>\u5168\u4f53\u50cf\u306e\u30b5\u30f3\u30d7\u30eb\u306f<a href=\"https:\/\/pub.dev\/packages\/localstore\/example\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/pub.dev\/packages\/localstore\/example<\/a>\u306b\u3042\u308a\u307e\u3059\u306e\u3067\u78ba\u8a8d\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\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\">Flutter\u306b\u3082\u3044\u308d\u3044\u308d\u306a\u30ed\u30fc\u30ab\u30eb\u30c7\u30fc\u30bf\u306e\u5165\u51fa\u529b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u306d\u3002<br>\u8907\u96d1\u306a\u30c7\u30fc\u30bf\u306e\u51e6\u7406\u304c\u5fc5\u8981\u306a\u3089SQLite\u3092\u4f7f\u3063\u3066\u3001\u5358\u7d14\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u3067\u3042\u308c\u3070JSON\u30d9\u30fc\u30b9\u3084XML\u30d9\u30fc\u30b9\u306e\u65b9\u6cd5\u304c\u826f\u3044\u3068\u601d\u3044\u307e\u3059\u3002\u662f\u975e\u30c1\u30e3\u30ec\u30f3\u30b8\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Flutter\u5074\u304b\u3089\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u672c\u4f53\u306e\u30ed\u30fc\u30ab\u30eb\u30b9\u30c8\u30ec\u30fc\u30b8\u306b\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u901a\u308a\u304b\u3042\u308a\u307e\u3059\u3002\u30e1\u30b8\u30e3\u30fc\u306a\u3084\u308a\u65b9\u306f\u4e0b\u8a18\u306e\u30d1\u30bf\u30fc\u30f3\u306b\u5206\u985e\u3055\u308c\u307e\u3059\u3002 \u30d5\u30a1\u30a4\u30eb\u81ea\u4f53\u306e\u8aad\u307f\u53d6\u308a\u3068\u66f8\u304d\u8fbc\u307f SQLite\u3092\u5229\u7528\u3059\u308b SQLCip [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":588,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rop_custom_images_group":[],"rop_custom_messages_group":[],"rop_publish_now":"initial","rop_publish_now_accounts":[],"rop_publish_now_history":[],"rop_publish_now_status":"pending","_themeisle_gutenberg_block_has_review":false,"sitemap_hide":"","_veu_custom_css":"","veu_display_promotion_alert":"","vkexunit_cta_each_option":"","footnotes":""},"categories":[45],"tags":[36,58,57,59],"class_list":["post-555","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-flutter","tag-flutter","tag-58","tag-57","tag-59"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ 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content=\"Flutter\u5074\u304b\u3089\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u672c\u4f53\u306e\u30ed\u30fc\u30ab\u30eb\u30b9\u30c8\u30ec\u30fc\u30b8\u306b\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u901a\u308a\u304b\u3042\u308a\u307e\u3059\u3002\u30e1\u30b8\u30e3\u30fc\u306a\u3084\u308a\u65b9\u306f\u4e0b\u8a18\u306e\u30d1\u30bf\u30fc\u30f3\u306b\u5206\u985e\u3055\u308c\u307e\u3059\u3002 \u30d5\u30a1\u30a4\u30eb\u81ea\u4f53\u306e\u8aad\u307f\u53d6\u308a\u3068\u66f8\u304d\u8fbc\u307f SQLite\u3092\u5229\u7528\u3059\u308b SQLCip [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/engineering.webstudio168.jp\/blog\/flutter-local-storage\/\" \/>\n<meta property=\"og:site_name\" content=\"QooTechWEB-\u958b\u767a\u30ed\u30b0\u30fb\u5b9f\u52d9\u8a18\u9332\u30d6\u30ed\u30b0\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/kenichi.yoshimura.735\/\" \/>\n<meta property=\"article:author\" 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