{"id":326,"date":"2020-04-01T16:18:34","date_gmt":"2020-04-01T08:18:34","guid":{"rendered":"https:\/\/badgameshow.com\/fly\/?p=326"},"modified":"2020-05-27T14:18:14","modified_gmt":"2020-05-27T06:18:14","slug":"design-pattern-singleton-pattern%e5%96%ae%e4%be%8b%e6%a8%a1%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/fly\/design-pattern-singleton-pattern%e5%96%ae%e4%be%8b%e6%a8%a1%e5%bc%8f\/","title":{"rendered":"Design Pattern Singleton Pattern(\u55ae\u4f8b\u6a21\u5f0f)"},"content":{"rendered":"<h1>Singleton Pattern(\u55ae\u4f8b\u6a21\u5f0f)<\/h1>\n<h4>\u53ef\u4ee5\u4fdd\u8b49\u9019\u4e00\u500b\u985e\u53ea\u6709\u4e00\u500b\u5be6\u4f8b,\u4e26\u4e14\u8a72\u985e\u63d0\u4f9b\u4e86\u5168\u57df\u8a2a\u554f,\u8a72Singleton\u985e\u53ef\u4ee5\u81ea\u5df1\u7522\u751f\u5be6\u9ad4,\u4e5f\u53ef\u4ee5\u901a\u904e\u5de5\u5ee0\u985e\u7372\u5f97\u7269\u4ef6<\/h4>\n<h2>\u597d\u8655<\/h2>\n<h4>\u53ea\u9700\u8981\u7269\u4ef6\u7684\u4e00\u500b\u5168\u57df\u5be6\u4f8b,\u7121\u8ad6\u662f\u76f4\u63a5\u4f7f\u7528\u5b83\u9084\u662f\u7c21\u55ae\u5730\u5c07\u5b83\u50b3\u905e\u7d66\u53e6\u4e00\u500b\u985e\u9019\u6a23\u7684\u4f8b\u5b50\u5f88\u591a,\u5305\u62ecOkHttpClient,HttpLoggingInterceptor,Retrofit,Gson,SharedPreferences\u7b49<\/h4>\n<h4>\u5982\u679c\u6211\u5011\u628a\u9019\u4e9b\u985e\u7522\u751f\u5be6\u9ad4\u4e86\u591a\u500b\u7269\u4ef6,\u5c31\u6703\u9047\u5230\u8a31\u591a\u554f\u984c,\u6bd4\u5982\u7570\u5e38\u7684APP\u53cd\u61c9,\u8cc7\u6e90\u904e\u5ea6\u4f7f\u7528\u548c\u5176\u4ed6\u6df7\u4e82\u7684\u7d50\u679c<\/h4>\n<h2>\u7a0b\u5f0f\u7bc4\u4f8b<\/h2>\n<h3>\u5efa\u7acb Singleton \u7684\u8a2d\u8a08\u6a21\u5f0f\u6709\u5e7e\u500b\u8981\u6ce8\u610f\u7684\u5730\u65b9<\/h3>\n<h4>1.\u9808\u5c07\u5efa\u69cb\u5b50\u8a2d\u70ba private,\u4ee5\u78ba\u4fdd\u6b64\u985e\u5225\u7686\u662f\u900f\u904e\u81ea\u8a02\u7684\u65b9\u6cd5\u5efa\u7acb\u5be6\u9ad4<\/h4>\n<h4>2.\u9700\u81ea\u5b9a\u4e00\u500bstatic\u7684\u65b9\u6cd5,\u901a\u5e38\u53d6\u540d\u70banewInstance\u6216\u8005\u662fgetInstance,\u4e26\u5728\u5176\u4e2d\u5224\u65b7\u6b64\u985e\u5225\u4e4b\u7269\u4ef6\u5be6\u9ad4\u662f\u5426\u5df2\u88ab\u5efa\u7acb\u904e<\/h4>\n<h4>3.\u9700\u5ba3\u544a\u4e00\u500bstatic\u53c3\u6578,\u7528\u4f86\u5132\u5b58\u6b64\u985e\u5225\u672c\u8eab\u4e4b\u7269\u4ef6\u5be6\u9ad4<\/h4>\n<pre><code class=\"language-Java line-numbers\">public class SingleTon {\n    \/\/\u5132\u5b58\u552f\u4e00\u7684\u7269\u4ef6\u5be6\u9ad4\n    private static SingleTon instance;\n\n    \/\/\u5efa\u69cb\u5b50\u8a2d\u6210 private\n    private SingleTon() {\n    }\n\n    \/\/\u81ea\u8a02getInstance\u65b9\u6cd5\n    public static synchronized SingleTon getInstance() {\n        \/\/\u6aa2\u67e5\u7269\u4ef6\u5be6\u9ad4\u662f\u5426\u5efa\u7acb\u904e\n        if (instance == null) {\n            \/\/\u672a\u5efa\u7acb\u5247\u547c\u53eb\u5efa\u69cb\u5b50\u5efa\u7acb\n            instance = new SingleTon();\n        }\n        return instance;\n    }\n}\n<\/code><\/pre>\n<h4>\u6700\u5efa\u8b70\u7684\u7528\u6cd5<\/h4>\n<pre><code class=\"language-Java line-numbers\">public class SingleTon {\n    \/\/\u5728\u7de8\u8b6f\u6642\u671f\u5c31new\u51faSingleton\u7269\u4ef6\n    private static SingleTon instance = new SingleTon();\n\n    \/\/\u5efa\u69cb\u5b50\u8a2d\u6210 private\n    private SingleTon() {}\n\n    \/\/\u81ea\u8a02getInstance\u65b9\u6cd5\n    public static SingleTon getInstance() {\n        return instance;\n    }\n}\n<\/code><\/pre>\n\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Singleton Pattern(\u55ae\u4f8b\u6a21\u5f0f) \u53ef\u4ee5\u4fdd\u8b49\u9019\u4e00\u500b\u985e\u53ea\u6709\u4e00\u500b\u5be6\u4f8b,\u4e26\u4e14\u8a72\u985e\u63d0\u4f9b\u4e86\u5168\u57df\u8a2a\u554f,\u8a72Sin &hellip; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"pgc_sgb_lightbox_settings":"","footnotes":""},"categories":[50],"tags":[13,51,52],"class_list":["post-326","post","type-post","status-publish","format-standard","hentry","category-design-pattern","tag-android","tag-design-pattern","tag-singleton-pattern"],"_links":{"self":[{"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/posts\/326","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/comments?post=326"}],"version-history":[{"count":9,"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/posts\/326\/revisions"}],"predecessor-version":[{"id":532,"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/posts\/326\/revisions\/532"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/media?parent=326"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/categories?post=326"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/fly\/wp-json\/wp\/v2\/tags?post=326"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}