{"id":1282,"date":"2025-05-16T07:03:26","date_gmt":"2025-05-15T22:03:26","guid":{"rendered":"https:\/\/itstudy365.com\/blog\/?p=1282"},"modified":"2025-05-16T07:03:26","modified_gmt":"2025-05-15T22:03:26","slug":"android-application-development-%e7%ac%ac16%e7%ab%a0%ef%bc%9asharedpreferences","status":"publish","type":"post","link":"https:\/\/itstudy365.com\/blog\/2025\/05\/16\/android-application-development-%e7%ac%ac16%e7%ab%a0%ef%bc%9asharedpreferences\/","title":{"rendered":"Android application development \u7b2c16\u7ae0\uff1aSharedPreferences"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\ud83d\uddc2\ufe0f SharedPreferences\u3068\u306f\uff1f<\/h2>\n\n\n\n<p><strong>\u30a2\u30d7\u30ea\u5185\u3067\u7c21\u5358\u306a\u30c7\u30fc\u30bf\u3092\u6c38\u7d9a\u7684\u306b\u4fdd\u5b58\u3059\u308b\u4ed5\u7d44\u307f<\/strong>\u3067\u3059\u3002<br>\u305f\u3068\u3048\u3070\uff1a<\/p>\n\n\n\n<ul>\n<li>\u30ed\u30b0\u30a4\u30f3\u72b6\u614b\uff08true\/false\uff09<\/li>\n\n\n\n<li>\u30e6\u30fc\u30b6\u30fc\u540d\u3084\u8a00\u8a9e\u8a2d\u5b9a<\/li>\n\n\n\n<li>\u6700\u5f8c\u306b\u958b\u3044\u305f\u753b\u9762\u3084\u30b9\u30b3\u30a2 \u306a\u3069<\/li>\n<\/ul>\n\n\n\n<p>\u306e\u3088\u3046\u306a <strong>\u300c\u3061\u3087\u3063\u3068\u3057\u305f\u8a2d\u5b9a\u300d\u3084\u300c\u5c0f\u3055\u306a\u30c7\u30fc\u30bf\u300d<\/strong> \u3092\u4fdd\u5b58\u3059\u308b\u306e\u306b\u5411\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\">\n<p>SQLite\u3084\u30d5\u30a1\u30a4\u30eb\u4fdd\u5b58\u306f\u91cd\u3059\u304e\u308b\u3002\u3067\u3082\u4e00\u6642\u7684\u306a<code>Bundle<\/code>\u3084<code>Intent<\/code>\u3067\u306f\u8db3\u308a\u306a\u3044\u3068\u304d\u306b\u4fbf\u5229\uff01<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83e\udde0 Java\u306e <code>Map<\/code> \u3068\u4f3c\u305f\u4f7f\u3044\u5fc3\u5730<\/h2>\n\n\n\n<p><code>SharedPreferences<\/code> \u306f\u300c\u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\u300d\u3067\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\u30fb\u53d6\u5f97\u3057\u307e\u3059\u3002<br>Java\u3067\u3044\u3046\u3068 <code>Map&lt;String, Object&gt;<\/code> \u306e\u3088\u3046\u306a\u30a4\u30e1\u30fc\u30b8\u3067\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udee0\ufe0f \u5b9f\u88c5\u65b9\u6cd5\uff08\u4fdd\u5b58\u3068\u8aad\u307f\u53d6\u308a\uff09<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u25a0 \u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\uff08\u66f8\u304d\u8fbc\u307f\uff09<\/h3>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-csharp\" data-lang=\"C#\" data-show-lang=\"0\"><code>SharedPreferences prefs = getSharedPreferences(&quot;MyPrefs&quot;, MODE_PRIVATE);\nSharedPreferences.Editor editor = prefs.edit();\n\neditor.putString(&quot;username&quot;, &quot;taro&quot;);\neditor.putInt(&quot;score&quot;, 80);\neditor.putBoolean(&quot;isLoggedIn&quot;, true);\n\n\/\/ \u5fc5\u305a commit() \u307e\u305f\u306f apply() \u3092\u547c\u3076\uff01\neditor.apply(); \/\/ \u975e\u540c\u671f\uff08\u63a8\u5968\uff09<\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">\u25a0 \u30c7\u30fc\u30bf\u3092\u8aad\u307f\u53d6\u308a<\/h3>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-csharp\" data-lang=\"C#\" data-show-lang=\"0\"><code>SharedPreferences prefs = getSharedPreferences(&quot;MyPrefs&quot;, MODE_PRIVATE);\n\nString username = prefs.getString(&quot;username&quot;, &quot;guest&quot;);\nint score = prefs.getInt(&quot;score&quot;, 0);\nboolean isLoggedIn = prefs.getBoolean(&quot;isLoggedIn&quot;, false);<\/code><\/pre><\/div>\n\n\n\n<blockquote class=\"wp-block-quote\">\n<p>\u7b2c\u4e8c\u5f15\u6570\u306f\u300c\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u300d\u3002\u30ad\u30fc\u304c\u5b58\u5728\u3057\u306a\u3044\u3068\u304d\u306b\u4f7f\u308f\u308c\u307e\u3059\u3002<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udce6 \u4fdd\u5b58\u3055\u308c\u308b\u5834\u6240<\/h2>\n\n\n\n<ul>\n<li>\u4fdd\u5b58\u3055\u308c\u305f\u5024\u306f\u3001\u30a2\u30d7\u30ea\u304c\u524a\u9664\u3055\u308c\u308b\u307e\u3067\u6b8b\u308a\u7d9a\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30c7\u30fc\u30bf\u306f\u5185\u90e8\u30b9\u30c8\u30ec\u30fc\u30b8\u306bXML\u5f62\u5f0f\u3067\u4fdd\u5b58\u3055\u308c\u307e\u3059\uff08\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u7684\u306b\u306f\u3084\u3084\u6ce8\u610f\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udccd MODE_PRIVATE\u3063\u3066\u4f55\uff1f<\/h2>\n\n\n\n<p><code>MODE_PRIVATE<\/code> \u306f\u4ed6\u306e\u30a2\u30d7\u30ea\u304b\u3089\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u3044\u300c\u3053\u306e\u30a2\u30d7\u30ea\u5c02\u7528\u300d\u4fdd\u5b58\u9818\u57df\u3068\u3044\u3046\u610f\u5473\u3067\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd01 \u3088\u304f\u4f7f\u3046\u30b7\u30fc\u30f3\u306e\u4f8b<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30b7\u30fc\u30f3<\/th><th>\u4f7f\u3044\u65b9<\/th><\/tr><\/thead><tbody><tr><td>\u6700\u521d\u306e\u30ed\u30b0\u30a4\u30f3\u30c1\u30a7\u30c3\u30af<\/td><td><code>isFirstLaunch = prefs.getBoolean(\"first\", true)<\/code><\/td><\/tr><tr><td>\u30e6\u30fc\u30b6\u30fc\u540d\u3092\u8a18\u61b6<\/td><td><code>putString(\"username\", \"...\")<\/code><\/td><\/tr><tr><td>\u8a2d\u5b9a\u753b\u9762\u3067\u30c8\u30b0\u30eb\u72b6\u614b\u3092\u4fdd\u5b58<\/td><td><code>putBoolean(\"darkMode\", true)<\/code><\/td><\/tr><tr><td>\u6700\u7d42\u30ed\u30b0\u30a4\u30f3\u65e5\u6642\u306a\u3069\u306e\u8a18\u9332<\/td><td><code>putLong(\"lastLogin\", System.currentTimeMillis())<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u2705 \u307e\u3068\u3081<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u7279\u5fb4<\/th><th>\u5185\u5bb9<\/th><\/tr><\/thead><tbody><tr><td>\u4fdd\u5b58\u5f62\u5f0f<\/td><td>\u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\uff08\u6587\u5b57\u5217\u30fb\u6570\u5024\u30fb\u30d6\u30fc\u30eb\u306a\u3069\uff09<\/td><\/tr><tr><td>\u6c38\u7d9a\u6027<\/td><td>\u30a2\u30d7\u30ea\u7d42\u4e86\u5f8c\u3082\u6b8b\u308b\uff08\u30a2\u30d7\u30ea\u524a\u9664\u3067\u6d88\u3048\u308b\uff09<\/td><\/tr><tr><td>\u4fdd\u5b58\u65b9\u6cd5<\/td><td><code>Editor<\/code> \u3092\u4f7f\u3063\u3066 <code>apply()<\/code> \u304b <code>commit()<\/code><\/td><\/tr><tr><td>\u7528\u9014<\/td><td>\u8a2d\u5b9a\u5024\u30fb\u72b6\u614b\u306e\u4fdd\u5b58\u306a\u3069\u3001\u8efd\u91cf\u306a\u7528\u9014\u306b\u6700\u9069<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83e\uddea \u88dc\u8db3\u77e5\u8b58<\/h2>\n\n\n\n<ul>\n<li><code>apply()<\/code> \u306f\u975e\u540c\u671f\u3001<code>commit()<\/code> \u306f\u540c\u671f\u7684\u306b\u66f8\u304d\u8fbc\u307f\u307e\u3059\uff08<code>apply()<\/code>\u306e\u65b9\u304cUI\u30b9\u30ec\u30c3\u30c9\u3092\u30d6\u30ed\u30c3\u30af\u3057\u307e\u305b\u3093\uff09<\/li>\n\n\n\n<li>\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306f\u30a2\u30d7\u30ea\u5358\u4f4d\u3067\u8907\u6570\u6301\u3066\u307e\u3059\uff08\u30d5\u30a1\u30a4\u30eb\u540d\u3067\u5206\u3051\u3089\u308c\u308b\uff09<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\ud83d\uddc2\ufe0f SharedPreferences\u3068\u306f\uff1f \u30a2\u30d7\u30ea\u5185\u3067\u7c21&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[54],"_links":{"self":[{"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/posts\/1282"}],"collection":[{"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/comments?post=1282"}],"version-history":[{"count":1,"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/posts\/1282\/revisions"}],"predecessor-version":[{"id":1283,"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/posts\/1282\/revisions\/1283"}],"wp:attachment":[{"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/media?parent=1282"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/categories?post=1282"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itstudy365.com\/blog\/wp-json\/wp\/v2\/tags?post=1282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}