{"id":9626,"date":"2024-03-15T03:26:41","date_gmt":"2024-03-14T18:26:41","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/android%e3%81%a7%e3%83%87%e3%83%bc%e3%82%bf%e3%83%99%e3%83%bc%e3%82%b9%e3%81%ab%e6%8e%a5%e7%b6%9a%e3%81%97%e3%81%a6%e3%80%81%e8%bf%bd%e5%8a%a0%e3%80%81%e5%89%8a%e9%99%a4%e3%80%81%e6%9b%b4%e6%96%b0\/"},"modified":"2025-08-04T02:47:44","modified_gmt":"2025-08-03T17:47:44","slug":"android%e3%81%a7%e3%83%87%e3%83%bc%e3%82%bf%e3%83%99%e3%83%bc%e3%82%b9%e3%81%ab%e6%8e%a5%e7%b6%9a%e3%81%97%e3%81%a6%e3%80%81%e8%bf%bd%e5%8a%a0%e3%80%81%e5%89%8a%e9%99%a4%e3%80%81%e6%9b%b4%e6%96%b0","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/android%e3%81%a7%e3%83%87%e3%83%bc%e3%82%bf%e3%83%99%e3%83%bc%e3%82%b9%e3%81%ab%e6%8e%a5%e7%b6%9a%e3%81%97%e3%81%a6%e3%80%81%e8%bf%bd%e5%8a%a0%e3%80%81%e5%89%8a%e9%99%a4%e3%80%81%e6%9b%b4%e6%96%b0\/","title":{"rendered":"Android \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\uff1a\u8ffd\u52a0\/\u524a\u9664\/\u66f4\u65b0\/\u691c\u7d22\u306e\u5b9f\u88c5"},"content":{"rendered":"<p>Android\u3067\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u63a5\u7d9a\u3057\u3066\u3001\u8ffd\u52a0\u3001\u524a\u9664\u3001\u66f4\u65b0\u3001\u691c\u7d22\u3092\u884c\u3046\u5834\u5408\u3001\u901a\u5e38\u306fSQLite\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u4e00\u822c\u7684\u306a\u624b\u9806\u3067\u3059\u3002<\/p>\n<ol>\n<li>SQLiteOpenHelper\u306e\u30b5\u30d6\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3057\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u4f5c\u6210\u3068\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3001\u304a\u3088\u3073\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u64cd\u4f5c\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u63d0\u4f9b\u3059\u308b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30d8\u30eb\u30d1\u30fc\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">DBHelper<\/span> <span class=\"hljs-keyword\">extends<\/span> <span class=\"hljs-title class_\">SQLiteOpenHelper<\/span> {\r\n    <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">final<\/span> <span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">DATABASE_NAME<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-string\">\"mydatabase.db\"<\/span>;\r\n    <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">final<\/span> <span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">DATABASE_VERSION<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-number\">1<\/span>;\r\n\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-title function_\">DBHelper<\/span><span class=\"hljs-params\">(Context context)<\/span> {\r\n        <span class=\"hljs-built_in\">super<\/span>(context, DATABASE_NAME, <span class=\"hljs-literal\">null<\/span>, DATABASE_VERSION);\r\n    }\r\n\r\n    <span class=\"hljs-meta\">@Override<\/span>\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">onCreate<\/span><span class=\"hljs-params\">(SQLiteDatabase db)<\/span> {\r\n        <span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">createTableQuery<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-string\">\"CREATE TABLE mytable (id INTEGER PRIMARY KEY, name TEXT)\"<\/span>;\r\n        db.execSQL(createTableQuery);\r\n    }\r\n\r\n    <span class=\"hljs-meta\">@Override<\/span>\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">onUpgrade<\/span><span class=\"hljs-params\">(SQLiteDatabase db, <span class=\"hljs-type\">int<\/span> oldVersion, <span class=\"hljs-type\">int<\/span> newVersion)<\/span> {\r\n        db.execSQL(<span class=\"hljs-string\">\"DROP TABLE IF EXISTS mytable\"<\/span>);\r\n        onCreate(db);\r\n    }\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u64cd\u4f5c\u304c\u5fc5\u8981\u306aActivity\u3084Fragment\u3067\u306f\u3001DBHelper\u3092\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3057\u3066\u3001\u8aad\u307f\u66f8\u304d\u53ef\u80fd\u306a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-type\">DBHelper<\/span> <span class=\"hljs-variable\">dbHelper<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">DBHelper<\/span>(<span class=\"hljs-built_in\">this<\/span>);\r\n<span class=\"hljs-type\">SQLiteDatabase<\/span> <span class=\"hljs-variable\">db<\/span> <span class=\"hljs-operator\">=<\/span> dbHelper.getWritableDatabase();\r\n<\/code><\/pre>\n<ol>\n<li>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u5bfe\u3059\u308b\u8ffd\u52a0\u3001\u524a\u9664\u3001\u66f4\u65b0\u3001\u691c\u7d22\u306e\u64cd\u4f5c\u3092\u5b9f\u884c\u3059\u308b\u3002<\/li>\n<\/ol>\n<ol>\n<li>\u30c7\u30fc\u30bf\u3092\u633f\u5165\u3059\u308b:<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-type\">ContentValues<\/span> <span class=\"hljs-variable\">values<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">ContentValues<\/span>();\r\nvalues.put(<span class=\"hljs-string\">\"name\"<\/span>, <span class=\"hljs-string\">\"John\"<\/span>);\r\n<span class=\"hljs-type\">long<\/span> <span class=\"hljs-variable\">result<\/span> <span class=\"hljs-operator\">=<\/span> db.insert(<span class=\"hljs-string\">\"mytable\"<\/span>, <span class=\"hljs-literal\">null<\/span>, values);\r\n<\/code><\/pre>\n<ol>\n<li>\u30c7\u30fc\u30bf\u3092\u691c\u7d22\u3059\u308b\u3002<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-type\">Cursor<\/span> <span class=\"hljs-variable\">cursor<\/span> <span class=\"hljs-operator\">=<\/span> db.query(<span class=\"hljs-string\">\"mytable\"<\/span>, <span class=\"hljs-literal\">null<\/span>, <span class=\"hljs-literal\">null<\/span>, <span class=\"hljs-literal\">null<\/span>, <span class=\"hljs-literal\">null<\/span>, <span class=\"hljs-literal\">null<\/span>, <span class=\"hljs-literal\">null<\/span>);\r\n<span class=\"hljs-keyword\">if<\/span> (cursor.moveToFirst()) {\r\n    <span class=\"hljs-keyword\">do<\/span> {\r\n        <span class=\"hljs-type\">String<\/span> <span class=\"hljs-variable\">name<\/span> <span class=\"hljs-operator\">=<\/span> cursor.getString(cursor.getColumnIndex(<span class=\"hljs-string\">\"name\"<\/span>));\r\n        <span class=\"hljs-comment\">\/\/ \u5904\u7406\u67e5\u8be2\u7ed3\u679c<\/span>\r\n    } <span class=\"hljs-keyword\">while<\/span> (cursor.moveToNext());\r\n}\r\ncursor.close();\r\n<\/code><\/pre>\n<ol>\n<li>\u30c7\u30fc\u30bf\u3092\u66f4\u65b0\u3059\u308b\u3002<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-type\">ContentValues<\/span> <span class=\"hljs-variable\">values<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">ContentValues<\/span>();\r\nvalues.put(<span class=\"hljs-string\">\"name\"<\/span>, <span class=\"hljs-string\">\"Mike\"<\/span>);\r\n<span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">rowsAffected<\/span> <span class=\"hljs-operator\">=<\/span> db.update(<span class=\"hljs-string\">\"mytable\"<\/span>, values, <span class=\"hljs-string\">\"id=?\"<\/span>, <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">String<\/span>[] { <span class=\"hljs-string\">\"1\"<\/span> });\r\n<\/code><\/pre>\n<ol>\n<li>\u30c7\u30fc\u30bf\u3092\u524a\u9664\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">rowsAffected<\/span> <span class=\"hljs-operator\">=<\/span> db.delete(<span class=\"hljs-string\">\"mytable\"<\/span>, <span class=\"hljs-string\">\"id=?\"<\/span>, <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">String<\/span>[] { <span class=\"hljs-string\">\"1\"<\/span> });\r\n<\/code><\/pre>\n<ol>\n<li>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u64cd\u4f5c\u304c\u7d42\u4e86\u3057\u305f\u3089\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\u3092\u9589\u3058\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code>db.close();\r\n<\/code><\/pre>\n<p>\u4e0a\u8a18\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u64cd\u4f5c\u306e\u7c21\u5358\u306a\u4f8b\u3067\u3059\u304c\u3001\u5b9f\u969b\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3001\u5177\u4f53\u7684\u306a\u8981\u4ef6\u306b\u5fdc\u3058\u3066\u3088\u308a\u8907\u96d1\u306a\u64cd\u4f5c\u304c\u5fc5\u8981\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u64cd\u4f5c\u3092\u884c\u3046\u969b\u306b\u306f\u3001\u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u3084\u4f8b\u5916\u51e6\u7406\u306b\u6ce8\u610f\u3057\u3001\u30c7\u30fc\u30bf\u64cd\u4f5c\u306e\u5b89\u5b9a\u6027\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u78ba\u4fdd\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Android\u3067\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u63a5\u7d9a\u3057\u3066\u3001\u8ffd\u52a0\u3001\u524a\u9664\u3001\u66f4\u65b0\u3001\u691c\u7d22\u3092\u884c\u3046\u5834\u5408\u3001\u901a\u5e38\u306fSQLite\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u4e00\u822c\u7684\u306a\u624b\u9806\u3067\u3059\u3002 SQLiteOpenHelper\u306e\u30b5\u30d6\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3057\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u4f5c\u6210\u3068\u30a2 [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[108,119,2866,14,26],"class_list":["post-9626","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-android","tag-sql","tag-sqlite","tag-14","tag-26"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Android \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\uff1a\u8ffd\u52a0\/\u524a\u9664\/\u66f4\u65b0\/\u691c\u7d22\u306e\u5b9f\u88c5 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\uff1a\u8ffd\u52a0\/\u524a\u9664\/\u66f4\u65b0\/\u691c\u7d22\u306e\u5b9f\u88c5\" \/>\n<meta property=\"og:description\" content=\"Android\u30a2\u30d7\u30ea\u3067\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9(SQLite\u7b49)\u306b\u63a5\u7d9a\u3057\u3001\u30c7\u30fc\u30bf\u306e\u8ffd\u52a0\u3001\u524a\u9664\u3001\u66f4\u65b0\u3001\u691c\u7d22\u3092\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u3092\u89e3\u8aac\u3002\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u4ed8\u304d\u3067\u521d\u5fc3\u8005\u306b\u3082\u5206\u304b\u308a\u3084\u3059\u304f\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/android\u3067\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u63a5\u7d9a\u3057\u3066\u3001\u8ffd\u52a0\u3001\u524a\u9664\u3001\u66f4\u65b0\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-14T18:26:41+00:00\" \/>\n<meta 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