{"id":1132,"date":"2023-03-16T21:51:19","date_gmt":"2023-03-16T13:51:19","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=1132"},"modified":"2023-04-29T10:01:19","modified_gmt":"2023-04-29T02:01:19","slug":"design-pattern-appearance-mode","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/03\/16\/design-pattern-appearance-mode\/","title":{"rendered":"\u8bbe\u8ba1\u6a21\u5f0f\uff0823\uff09\u5916\u89c2\u6a21\u5f0f"},"content":{"rendered":"<p>\u5916\u89c2\u6a21\u5f0f\u662f\u7ed3\u6784\u578b\u8bbe\u8ba1\u6a21\u5f0f\u4e4b\u4e00\uff0c\u5b83\u5728\u5f00\u53d1\u4e2d\u7684\u8fd0\u7528\u9891\u7387\u975e\u5e38\u9ad8\uff0c\u662f\u6211\u4eec\u5c01\u88c5API\u7684\u5e38\u7528\u624b\u6bb5\u3002\u6211\u4eec\u7ecf\u5e38\u4f7f\u7528\u7684\u4e09\u65b9SDK\u57fa\u672c\u90fd\u4f7f\u7528\u7684\u5916\u89c2\u6a21\u5f0f\uff0c\u8fd9\u6837\u53ef\u4ee5\u5bf9\u7528\u6237\u5c4f\u853d\u5f88\u591a\u5b9e\u73b0\u7ec6\u8282\uff0c\u964d\u4f4e\u7528\u6237\u4f7f\u7528\u6210\u672c\u3002<\/p>\n<p><!-- more --><\/p>\n<h2>\u5b9a\u4e49<\/h2>\n<p>\u8981\u6c42\u4e00\u4e2a\u5b50\u7cfb\u7edf\u7684\u5916\u90e8\u4e0e\u5176\u5185\u90e8\u7684\u901a\u4fe1\u5fc5\u987b\u901a\u8fc7\u4e00\u4e2a\u7edf\u4e00\u7684\u5bf9\u8c61\u8fdb\u884c\u3002\u5916\u89c2\u6a21\u5f0f\u63d0\u4f9b\u4e00\u4e2a\u9ad8\u5c42\u6b21\u7684\u63a5\u53e3\uff0c\u4f7f\u5f97\u5b50\u7cfb\u7edf\u66f4\u6613\u4e8e\u4f7f\u7528\u3002<\/p>\n<h2>\u4f7f\u7528\u573a\u666f<\/h2>\n<p>\uff081\uff09\u4e3a\u590d\u6742\u5b50\u7cfb\u7edf\u63d0\u4f9b\u4e00\u4e2a\u7b80\u5355\u63a5\u53e3\uff0c\u5bf9\u5916\u9690\u85cf\u5b50\u7cfb\u7edf\u7684\u5177\u4f53\u5b9e\u73b0\u3001\u9694\u79bb\u53d8\u5316\u3002<br \/>\n\uff082\uff09\u5f53\u4f60\u9700\u8981\u6784\u5efa\u4e00\u4e2a\u5c42\u6b21\u7ed3\u6784\u7684\u5b50\u7cfb\u7edf\u65f6\uff0c\u4f7f\u7528\u5916\u89c2\u6a21\u5f0f\u5b9a\u4e49\u5b50\u7cfb\u7edf\u4e2d\u6bcf\u5c42\u7684\u5165\u53e3\u70b9\u3002\u5982\u679c\u5b50\u7cfb\u7edf\u4e4b\u95f4\u662f\u76f8\u4e92\u4f9d\u8d56\u7684\uff0c\u4f60\u53ef\u4ee5\u8ba9\u5b83\u4eec\u4ec5\u901a\u8fc7\u5916\u89c2\u63a5\u53e3\u8fdb\u884c\u901a\u4fe1\uff0c\u4ece\u800c\u7b80\u5316\u4e86\u5b83\u4eec\u4e4b\u95f4\u7684\u4f9d\u8d56\u5173\u7cfb\u3002<\/p>\n<h2>UML\u7c7b\u56fe<\/h2>\n<p>\u8fd9\u91cc\u5199\u56fe\u7247\u63cf\u8ff0<\/p>\n<p>\uff081\uff09Facade\uff1a\u7cfb\u7edf\u5bf9\u5916\u7684\u7edf\u4e00\u63a5\u53e3\uff0c\u7cfb\u7edf\u5185\u90e8\u7cfb\u7edf\u5730\u5de5\u4f5c\u3002<br \/>\n\uff082\uff09\u5176\u4ed6\u5206\u652f\uff1a\u5b50\u7cfb\u7edf\u63a5\u53e3\u3002<\/p>\n<p>\u53ef\u4ee5\u770b\u51fa\u5916\u89c2\u6a21\u5f0f\u7ed3\u6784\u5f88\u7b80\u5355\uff0c\u4f46\u662f\u5982\u679c\u6ca1\u6709\u5c01\u88c5\uff0c\u90a3\u4e48\u7528\u6237\u5c31\u8981\u64cd\u4f5c\u51e0\u4e2a\u5b50\u7cfb\u7edf\u7684\u4ea4\u4e92\u903b\u8f91\uff0c\u5bb9\u6613\u51fa\u73b0\u9519\u8bef\u3002<\/p>\n<h2>\u7b80\u5355\u5b9e\u4f8b<\/h2>\n<p>\u624b\u673a\u96c6\u5408\u4e86\u7535\u8bdd\u529f\u80fd\u3001\u77ed\u4fe1\u529f\u80fd\u3001\u62cd\u7167\u548cGPS\u7b49\u529f\u80fd\u3002\u90a3\u4e48\u4ee5\u624b\u673a\u4e3a\u4f8b\uff0c\u7b80\u5355\u7684\u7528\u5916\u89c2\u6a21\u5f0f\u5b9e\u73b0\u4e00\u4e0b\u3002<\/p>\n<p>Phone\u63a5\u53e3\u4e0ePhoneImpl\uff1a<\/p>\n<pre><code class=\"language-java\">public interface Phone {\n\n    \/\/\u62e8\u7535\u8bdd\n    public void dail();\n\n    \/\/\u6302\u65ad\n    public void hangup();\n}<\/code><\/pre>\n<pre><code class=\"language-java\">public class PhoneImpl implements Phone{\n\n    @Override\n    public void dail() {\n        System.out.println(&quot;\u6253\u7535\u8bdd&quot;);\n    }\n\n    @Override\n    public void hangup() {\n        System.out.println(&quot;\u6302\u65ad&quot;);\n    }\n\n}<\/code><\/pre>\n<p>Camera\u63a5\u53e3\u4e0eCamera\u7684\u5b9e\u73b0\u7c7b\uff1a<\/p>\n<pre><code class=\"language-java\">public interface Camera {\n\n    \/\/\u6253\u5f00\u76f8\u673a\n    public void open();\n\n    \/\/\u62cd\u7167\n    public void takePicture();\n\n    \/\/\u5173\u95ed\u76f8\u673a\n    public void close();\n}<\/code><\/pre>\n<pre><code class=\"language-java\">public class SamsungCamera implements Camera{\n\n    @Override\n    public void open() {\n        System.out.println(&quot;\u6253\u5f00\u76f8\u673a&quot;);\n    }\n\n    @Override\n    public void takePicture() {\n        System.out.println(&quot;\u62cd\u7167&quot;);\n    }\n\n    @Override\n    public void close() {\n        System.out.println(&quot;\u5173\u95ed\u76f8\u673a&quot;);\n    }\n\n}<\/code><\/pre>\n<p>\u5916\u89c2\u7c7bMobilePhone\uff1a<\/p>\n<pre><code class=\"language-java\">public class MobilePhone {\n\n    private Phone mPhone = new PhoneImpl();\n    private Camera mCamera = new SamsungCamera();\n\n    public void dail(){\n        mPhone.dail();\n    }\n\n    public void hangup() {\n        mPhone.hangup();\n    }\n\n    public void takePicture() {\n        mCamera.open();\n        mCamera.takePicture();\n    }\n\n    public void closeCamera() {\n        mCamera.close();\n    }\n\n    public void videoChat(){\n        System.out.println(&quot;--&gt; \u89c6\u9891\u804a\u5929\u63a5\u901a\u4e2d&quot;);\n        mCamera.open();\n        mPhone.dail();\n    }\n}<\/code><\/pre>\n<p>\u8c03\u7528\uff1a<\/p>\n<pre><code class=\"language-java\">public class Client {\n\n    public static void main(String[] args) {\n        MobilePhone mobilePhone = new MobilePhone();\n\n        \/\/\u62cd\u7167\n        mobilePhone.takePicture();\n        \/\/\u89c6\u9891\u804a\u5929\n        mobilePhone.videoChat();\n    }\n\n}<\/code><\/pre>\n<p>\u7ed3\u679c\uff1a<\/p>\n<pre><code>\u6253\u5f00\u76f8\u673a\n\u62cd\u7167\n--&gt; \u89c6\u9891\u804a\u5929\u63a5\u901a\u4e2d\n\u6253\u5f00\u76f8\u673a\n\u6253\u7535\u8bdd<\/code><\/pre>\n<h2>Android\u6e90\u7801\u4e2d\u7684\u5916\u89c2\u6a21\u5f0f<\/h2>\n<ul>\n<li>Context<\/li>\n<\/ul>\n<p><code>Context<\/code>\u662f\u4e00\u4e2a\u62bd\u8c61\u7c7b\uff0c\u5b83\u7684\u771f\u6b63\u5b9e\u73b0\u662f<code>ContextImpl<\/code>\u7c7b\uff0c\u901a\u8fc7\u67e5\u770b<code>ContextImpl<\/code>\u6e90\u7801\u6211\u4eec\u53ef\u4ee5\u770b\u5230<code>ContextImpl<\/code>\u5185\u90e8\u5c01\u88c5\u4e86\u5f88\u591a\u4e0d\u540c\u5b50\u7cfb\u7edf\u7684\u64cd\u4f5c\u3002\u4f8b\u5982\uff1aActivity\u7684\u8df3\u8f6c\u3001\u53d1\u9001\u5e7f\u64ad\u3001\u542f\u52a8\u670d\u52a1\u548c\u8bbe\u7f6e\u58c1\u7eb8\u7b49\uff0c\u8fd9\u4e9b\u5de5\u4f5c\u4e0d\u662f\u5728<code>ContextImpl<\/code>\u4e2d\u5b9e\u73b0\uff0c\u800c\u662f\u4ea4\u7ed9\u4e86\u5177\u4f53\u7684\u5b50\u7cfb\u7edf\u8fdb\u884c\u5904\u7406\u3002\u901a\u8fc7<code>Context<\/code>\u8fd9\u4e2a\u62bd\u8c61\u7c7b\u5b9a\u4e49\u4e86\u4e00\u7ec4\u63a5\u53e3\uff0c<code>ContextImpl<\/code>\u5b9e\u73b0\u3002\u8fd9\u6837\u7528\u6237\u901a\u5e38\u60c5\u51b5\u4e0b\u5c31\u4e0d\u9700\u8981\u5bf9\u6bcf\u4e2a\u5b50\u7cfb\u7edf\u8fdb\u884c\u4e86\u89e3\u3002\u8fd9\u6837\u5bf9\u7528\u6237\u5c4f\u853d\u4e86\u5177\u4f53\u7684\u5b9e\u73b0\u7ec6\u8282\uff0c\u964d\u4f4e\u4e86\u4f7f\u7528\u6210\u672c\u3002<\/p>\n<h2>\u603b\u7ed3<\/h2>\n<ul>\n<li>\u4f18\u70b9<\/li>\n<\/ul>\n<p>\uff081\uff09\u5bf9\u5ba2\u6237\u7a0b\u5e8f\u9690\u85cf\u5b50\u7cfb\u7edf\u7684\u7ec6\u8282\uff0c\u56e0\u800c\u51cf\u5c11\u4e86\u5ba2\u6237\u5bf9\u4e8e\u5b50\u7cfb\u7edf\u7684\u8026\u5408\uff0c\u80fd\u591f\u62e5\u62b1\u53d8\u5316\u3002<br \/>\n\uff082\uff09\u5916\u89c2\u7c7b\u5bf9\u5b50\u7cfb\u7edf\u7684\u63a5\u53e3\u5c01\u88c5\uff0c\u4f7f\u5f97\u7cfb\u7edf\u66f4\u6613\u4e8e\u4f7f\u7528\u3002<\/p>\n<ul>\n<li>\u7f3a\u70b9<\/li>\n<\/ul>\n<p>\uff081\uff09\u5916\u89c2\u7c7b\u63a5\u53e3\u81a8\u80c0\u3002\u7531\u4e8e\u5b50\u7cfb\u7edf\u7684\u63a5\u53e3\u90fd\u6709\u5916\u89c2\u7c7b\u7edf\u4e00\u5bf9\u5916\u66b4\u9732\uff0c\u4f7f\u5f97\u5916\u89c2\u7c7b\u7684API\u63a5\u53e3\u8f83\u591a\uff0c\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u589e\u52a0\u4e86\u7528\u6237\u4f7f\u7528\u6210\u672c\u3002<br \/>\n\uff082\uff09\u5916\u89c2\u7c7b\u6ca1\u6709\u9075\u5faa\u5f00\u95ed\u539f\u5219\uff0c\u5f53\u4e1a\u52a1\u51fa\u73b0\u53d8\u66f4\u65f6\uff0c\u53ef\u80fd\u9700\u8981\u76f4\u63a5\u4fee\u6539\u5916\u89c2\u7c7b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5916\u89c2\u6a21\u5f0f\u662f\u7ed3\u6784\u578b\u8bbe\u8ba1\u6a21\u5f0f\u4e4b\u4e00\uff0c\u5b83\u5728\u5f00\u53d1\u4e2d\u7684\u8fd0\u7528\u9891\u7387\u975e\u5e38\u9ad8\uff0c\u662f\u6211\u4eec\u5c01\u88c5API\u7684\u5e38\u7528\u624b\u6bb5\u3002\u6211\u4eec\u7ecf\u5e38\u4f7f\u7528\u7684\u4e09\u65b9SDK [&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-1132","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\/1132","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=1132"}],"version-history":[{"count":0,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1132\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1132"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1132"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1132"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}