{"id":1112,"date":"2023-03-12T19:58:43","date_gmt":"2023-03-12T11:58:43","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=1112"},"modified":"2023-04-29T11:23:25","modified_gmt":"2023-04-29T03:23:25","slug":"design-pattern-builder-mode","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/03\/12\/design-pattern-builder-mode\/","title":{"rendered":"\u8bbe\u8ba1\u6a21\u5f0f\uff083\uff09Builder\u6a21\u5f0f"},"content":{"rendered":"<h2>\u5b9a\u4e49<\/h2>\n<p>\u5c06\u4e00\u4e2a\u590d\u6742\u5bf9\u8c61\u7684\u6784\u5efa\u4e0e\u5b83\u7684\u8868\u793a\u5206\u79bb\uff0c\u4f7f\u5f97\u540c\u6837\u7684\u6784\u5efa\u8fc7\u7a0b\u53ef\u4ee5\u521b\u5efa\u4e0d\u540c\u7684\u8868\u793a\u3002<\/p>\n<p><!-- more --><\/p>\n<h2>\u4f7f\u7528\u573a\u666f<\/h2>\n<ul>\n<li>\u76f8\u540c\u7684\u65b9\u6cd5\uff0c\u4e0d\u540c\u7684\u6267\u884c\u987a\u5e8f\uff0c\u4ea7\u751f\u4e0d\u540c\u7684\u4e8b\u4ef6\u7ed3\u679c\u65f6\u3002 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\u6bd4\u5982\u521b\u5efa\u6c7d\u8f66\u65b9\u5411\u76d8\n\u3000\u3000void buildPartB(); \n\u3000\u3000\/\/\u521b\u5efa\u90e8\u4ef6C   \u6bd4\u5982\u521b\u5efa\u6c7d\u8f66\u53d1\u52a8\u673a\n\u3000\u3000void buildPartC();\n\u3000\u3000\/\/\u8fd4\u56de\u6700\u540e\u7ec4\u88c5\u6210\u54c1\u7ed3\u679c (\u8fd4\u56de\u6700\u540e\u88c5\u914d\u597d\u7684\u6c7d\u8f66)\n\u3000\u3000Product getResult();\n}\n\n\/\/Director \u7c7b\uff0c\u8d1f\u8d23\u5236\u9020\npublic class Director {\n\n\u3000\u3000private Builder builder;\n\n\u3000\u3000public Director( Builder builder ) {\n\u3000\u3000\u3000\u3000this.builder = builder;\n\u3000\u3000}\n\n\u3000\u3000\/\/ \u5c06\u90e8\u4ef6partA partB partC\u6700\u540e\u7ec4\u6210\u590d\u6742\u5bf9\u8c61\n\u3000\u3000\/\/\u8fd9\u91cc\u662f\u5c06\u8f66\u8f6e \u65b9\u5411\u76d8\u548c\u53d1\u52a8\u673a\u7ec4\u88c5\u6210\u6c7d\u8f66\u7684\u8fc7\u7a0b\n\u3000\u3000public void construct() {\n\u3000\u3000\u3000\u3000builder.buildPartA();\n\u3000\u3000\u3000\u3000builder.buildPartB();\n\u3000\u3000\u3000\u3000builder.buildPartC();\n\u3000\u3000}\n}\n\npublic class ConcreteBuilder implements Builder {\n\u3000\u3000Part partA, partB, partC;\n\n\u3000\u3000public void buildPartA() {\n\u3000\u3000\u3000\u3000\/\/\u8fd9\u91cc\u662f\u5177\u4f53\u5982\u4f55\u6784\u5efapartA\u7684\u4ee3\u7801\n\u3000\u3000};\n\u3000\u3000public void buildPartB() { \n\u3000\u3000\u3000\u3000\/\/\u8fd9\u91cc\u662f\u5177\u4f53\u5982\u4f55\u6784\u5efapartB\u7684\u4ee3\u7801\n\u3000\u3000};\n\u3000\u3000 public void buildPartC() { \n\u3000\u3000\u3000\u3000\/\/\u8fd9\u91cc\u662f\u5177\u4f53\u5982\u4f55\u6784\u5efapartB\u7684\u4ee3\u7801\n\u3000\u3000};\n\u3000\u3000 public Product getResult() { \n\u3000\u3000\u3000\u3000\/\/\u8fd4\u56de\u6700\u540e\u7ec4\u88c5\u6210\u54c1\u7ed3\u679c\n\u3000\u3000};\n}\n\npublic interface Product { }  \/\/\u4ea7\u54c1\n\npublic interface Part { }  \/\/\u90e8\u4ef6\n\n\/\/\u8c03\u7528\nConcreteBuilder builder = new ConcreteBuilder();\nDirector director = new Director(builder);\n\ndirector.construct();\nProduct product = builder.getResult();<\/code><\/pre>\n<p>\u4ece\u4e0a\u9762\u53ef\u4ee5\u770b\u5230\u7531\u4e8eDirector\u5c01\u88c5\u4e86\u6784\u5efa\u590d\u6742\u7684\u4ea7\u54c1\u5bf9\u8c61\u8fc7\u7a0b\uff0c\u5bf9\u5916\u9690\u85cf\u4e86\u7ec6\u8282\u3002<\/p>\n<p>\u73b0\u5b9e\u5f00\u53d1\u4e2d\uff0cDirector\u4e00\u822c\u88ab\u7701\u7565\u3002\u800c\u76f4\u63a5\u4f7f\u7528\u4e00\u4e2aBuilder\u6765\u8fdb\u884c\u5bf9\u8c61\u7684\u7ec4\u88c5\uff0c\u8fd9\u4e2aBuilder\u901a\u5e38\u4e3a\u94fe\u5f0f\u8c03\u7528\uff0c\u6bcf\u4e2a\u8c03\u7528\u65b9\u6cd5\u8fd4\u56de\u81ea\u8eab\u5f15\u7528\u3002\u4ee3\u7801\u5927\u81f4\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-java\">new TestBuilder().methodA(&quot;A&quot;).methodB(&quot;B&quot;).create();<\/code><\/pre>\n<h2>Android\u6e90\u7801\u4e2d\u7684Builder\u6a21\u5f0f<\/h2>\n<ul>\n<li><code>AlertDialog.Builder<\/code><\/li>\n<li><code>OKHttp\/Glide<\/code><\/li>\n<\/ul>\n<h2>\u603b\u7ed3<\/h2>\n<p>\u4f18\u70b9\uff1a<\/p>\n<p>\uff081\uff09\u826f\u597d\u7684\u5c01\u88c5\u6027\uff0c\u4f7f\u7528\u5efa\u9020\u8005\u6a21\u5f0f\u53ef\u4ee5\u4f7f\u5ba2\u6237\u7aef\u4e0d\u5fc5\u77e5\u9053\u4ea7\u54c1\u5185\u90e8\u7ec4\u6210\u7ec6\u8282\u3002<br \/>\n\uff082\uff09\u5efa\u9020\u8005\u72ec\u7acb\uff0c\u5bb9\u6613\u6269\u5c55\u3002<\/p>\n<p>\u7f3a\u70b9\uff1a<\/p>\n<p>\uff081\uff09\u4f1a\u4ea7\u751f\u591a\u4f59\u7684Builder\u5bf9\u8c61\u53caDirector\u5bf9\u8c61\uff0c\u6d88\u8017\u5185\u5b58\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b9a\u4e49 \u5c06\u4e00\u4e2a\u590d\u6742\u5bf9\u8c61\u7684\u6784\u5efa\u4e0e\u5b83\u7684\u8868\u793a\u5206\u79bb\uff0c\u4f7f\u5f97\u540c\u6837\u7684\u6784\u5efa\u8fc7\u7a0b\u53ef\u4ee5\u521b\u5efa\u4e0d\u540c\u7684\u8868\u793a\u3002 \u4f7f\u7528\u573a\u666f \u76f8\u540c\u7684\u65b9\u6cd5\uff0c\u4e0d\u540c\u7684 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[303],"tags":[],"class_list":["post-1112","post","type-post","status-publish","format-standard","hentry","category-design-pattern"],"_links":{"self":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1112","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1112"}],"version-history":[{"count":0,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1112\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1112"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1112"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1112"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}