{"id":50301,"date":"2025-07-30T22:47:05","date_gmt":"2025-07-30T14:47:05","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/50301.html"},"modified":"2025-07-30T22:47:05","modified_gmt":"2025-07-30T14:47:05","slug":"%e8%ae%a9%e9%b8%bf%e8%92%99%e5%ba%94%e7%94%a8%e4%b8%9d%e6%bb%91%e5%a6%82%e9%a3%9e%ef%bc%9a%e7%bb%98%e5%9b%be%e6%80%a7%e8%83%bd%e4%bc%98%e5%8c%96%e5%85%a8%e6%94%bb%e7%95%a5%ef%bc%88%e9%99%84%e4%bb%a3","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/50301.html","title":{"rendered":"\u8ba9\u9e3f\u8499\u5e94\u7528\u4e1d\u6ed1\u5982\u98de\uff1a\u7ed8\u56fe\u6027\u80fd\u4f18\u5316\u5168\u653b\u7565\uff08\u9644\u4ee3\u7801\u5b9e\u6218\uff09"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250730144700-688a30645ffe4.jpg\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" 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\u6784\u5efa\u7684\u9ad8\u6027\u80fd\u89c6\u56fe&#xff0c;\u8fd8\u662f\u81ea\u5b9a\u4e49\u7ed8\u56fe\u903b\u8f91&#xff0c;\u4e00\u4e2a\u6d41\u7545\u3001\u4e0d\u5361\u987f\u7684\u7ed8\u56fe\u4f53\u9a8c\u76f4\u63a5\u5f71\u54cd\u5230\u7528\u6237\u5bf9\u4ea7\u54c1\u7684\u7b2c\u4e00\u5370\u8c61\u3002\u672c\u6587\u5c06\u7ed3\u5408\u5b9e\u9645\u5f00\u53d1\u7ecf\u9a8c&#xff0c;\u8bb2\u89e3\u5728\u9e3f\u8499\u5e94\u7528\u4e2d\u5982\u4f55\u4f18\u5316\u7ed8\u56fe\u6027\u80fd&#xff0c;\u5305\u62ec\u6280\u672f\u624b\u6bb5\u3001\u5b9e\u6218\u4ee3\u7801\u548c\u5de5\u5177\u4f7f\u7528&#xff0c;\u52a9\u4f60\u6253\u9020\u9ad8\u6548\u4e1d\u6ed1\u7684\u7528\u6237\u754c\u9762\u3002<\/p>\n<h3>\u5f15\u8a00<\/h3>\n<p>\u9e3f\u8499&#xff08;HarmonyOS&#xff09;\u7279\u522b\u6ce8\u91cd\u8de8\u8bbe\u5907\u534f\u540c\u548c\u9ad8\u6027\u80fd\u56fe\u5f62\u6e32\u67d3&#xff0c;\u5c24\u5176\u5728\u667a\u80fd\u7a7f\u6234\u3001\u8f66\u673a\u3001\u7535\u89c6\u7b49\u8bbe\u5907\u4e0a&#xff0c;\u5bf9\u4e8e\u56fe\u5f62\u5904\u7406\u7684\u8981\u6c42\u66f4\u9ad8\u3002\u4f46\u8bbe\u5907\u6027\u80fd\u53c2\u5dee\u4e0d\u9f50&#xff0c;\u5f00\u53d1\u8005\u5f80\u5f80\u9700\u8981\u9762\u5bf9\u5185\u5b58\u5403\u7d27\u3001CPU\u6027\u80fd\u4e00\u822c\u7b49\u5b9e\u9645\u60c5\u51b5\u3002<\/p>\n<p>\u5728 ArkUI \u6784\u5efa\u754c\u9762\u7684\u8fc7\u7a0b\u4e2d&#xff0c;\u5f88\u591a\u65f6\u5019\u56e0\u4e3a\u201c\u6ca1\u6ce8\u610f\u201d\u5bfc\u81f4\u9891\u7e41\u91cd\u7ed8\u3001\u56fe\u7247\u52a0\u8f7d\u963b\u585e\u4e3b\u7ebf\u7a0b\u3001\u52a8\u753b\u6389\u5e27\u7b49\u95ee\u9898\u9891\u53d1\u3002\u672c\u6587\u5c06\u9010\u6b65\u8bb2\u89e3\u4ece\u8bbe\u8ba1\u5230\u7f16\u7801\u7684\u7ed8\u56fe\u4f18\u5316\u7b56\u7565&#xff0c;\u5e76\u901a\u8fc7\u5b9e\u6218\u4ee3\u7801\u914d\u5408\u5206\u6790\u5de5\u5177\u6765\u5b9e\u73b0\u6548\u679c\u91cf\u5316\u3002<\/p>\n<h3>\u4f7f\u7528\u9ad8\u6548\u7ed8\u56fe API&#xff1a;\u4ece\u57fa\u7840\u505a\u8d77<\/h3>\n<h4>ArkUI \u7ed8\u56fe\u63a8\u8350\u7528\u6cd5<\/h4>\n<p>ArkUI \u63d0\u4f9b\u4e86\u76f8\u5bf9\u9ad8\u6548\u7684\u7ec4\u4ef6\u5316 UI \u6e32\u67d3\u65b9\u5f0f&#xff0c;\u4f46\u4e5f\u5141\u8bb8\u4f60\u624b\u52a8\u64cd\u4f5c Canvas \u8fdb\u884c\u7ed8\u5236\u3002\u5728\u590d\u6742\u573a\u666f\u4e0b&#xff0c;\u4f7f\u7528 CanvasRenderingContext2D \u7684\u81ea\u5b9a\u4e49\u7ed8\u56fe\u80fd\u529b\u80fd\u5e26\u6765\u66f4\u591a\u63a7\u5236&#xff0c;\u4f46\u9700\u8981\u683c\u5916\u6ce8\u610f\u6027\u80fd\u3002<\/p>\n<h5>\u793a\u4f8b&#xff1a;\u81ea\u5b9a\u4e49\u7ed8\u5236\u4e00\u4e2a\u5fc3\u8df3\u66f2\u7ebf\u56fe<\/h5>\n<p>&#064;Entry<br \/>\n&#064;Component<br \/>\nstruct HeartbeatCanvas <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token function\">build<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">Canvas<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n      width<span class=\"token operator\">:<\/span> <span class=\"token string\">&#039;100%&#039;<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      height<span class=\"token operator\">:<\/span> <span class=\"token number\">200<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">onDraw<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token operator\">:<\/span> CanvasRenderingContext2D<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      ctx<span class=\"token punctuation\">.<\/span>strokeStyle <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;#e63946&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      ctx<span class=\"token punctuation\">.<\/span>lineWidth <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      ctx<span class=\"token punctuation\">.<\/span><span class=\"token function\">beginPath<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">let<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">500<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&#043;&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        ctx<span class=\"token punctuation\">.<\/span><span class=\"token function\">lineTo<\/span><span class=\"token punctuation\">(<\/span>i<span class=\"token punctuation\">,<\/span> <span class=\"token number\">100<\/span> <span class=\"token operator\">&#043;<\/span> Math<span class=\"token punctuation\">.<\/span><span class=\"token function\">sin<\/span><span class=\"token punctuation\">(<\/span>i <span class=\"token operator\">*<\/span> <span class=\"token number\">0.05<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">*<\/span> <span class=\"token number\">30<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><br \/>\n      ctx<span class=\"token punctuation\">.<\/span><span class=\"token function\">stroke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u8fd9\u4e2a\u81ea\u5b9a\u4e49\u7ed8\u56fe\u529f\u80fd\u867d\u7136\u7075\u6d3b&#xff0c;\u4f46\u9700\u8981\u6ce8\u610f\u907f\u514d\u5728\u4e0d\u9700\u8981\u7684\u573a\u666f\u4e0b\u9891\u7e41\u89e6\u53d1 onDraw&#xff0c;\u5426\u5219\u6027\u80fd\u5c06\u5927\u5e45\u4e0b\u964d\u3002<\/p>\n<h3>\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u89c6\u56fe\u66f4\u65b0&#xff1a;\u6309\u9700\u6e32\u67d3\u7b56\u7565<\/h3>\n<h4>\u7528 &#064;Watch \u548c\u6761\u4ef6\u6e32\u67d3\u6765\u907f\u514d\u5197\u4f59\u91cd\u7ed8<\/h4>\n<p>\u5f53\u72b6\u6001\u6539\u53d8\u65f6&#xff0c;ArkUI \u4f1a\u89e6\u53d1\u7ec4\u4ef6\u66f4\u65b0\u3002\u6211\u4eec\u5e94\u8be5\u5c3d\u91cf\u5c06\u72b6\u6001\u66f4\u65b0\u9650\u5236\u5728\u771f\u6b63\u9700\u8981\u66f4\u65b0\u89c6\u56fe\u7684\u5730\u65b9\u3002<\/p>\n<h5>\u793a\u4f8b&#xff1a;\u70b9\u51fb\u6309\u94ae\u5207\u6362\u72b6\u6001&#xff0c;\u975e\u5173\u952e\u533a\u57df\u4e0d\u91cd\u7ed8<\/h5>\n<p>&#064;Entry<br \/>\n&#064;Component<br \/>\nstruct StateEfficientUI <span class=\"token punctuation\">{<\/span><br \/>\n  &#064;State count<span class=\"token operator\">:<\/span> <span class=\"token builtin\">number<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><\/p>\n<p>  <span class=\"token function\">build<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">Column<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token function\">Text<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u70b9\u51fb\u6b21\u6570&#xff1a;&#039;<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>count<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">fontSize<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">20<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">margin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>      <span class=\"token function\">Button<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u70b9\u51fb\u589e\u52a0&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">onClick<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n          <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>count<span class=\"token operator\">&#043;&#043;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>      <span class=\"token comment\">\/\/ \u4e0d\u53d7\u5f71\u54cd\u7684\u9759\u6001\u5185\u5bb9<\/span><br \/>\n      <span class=\"token function\">Text<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u6211\u662f\u4e0d\u4f1a\u88ab\u9891\u7e41\u66f4\u65b0\u7684\u533a\u57df&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">fontSize<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">16<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">margin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>\u56fe\u5f62\u6e32\u67d3\u786c\u4ef6\u52a0\u901f&#xff1a;\u91ca\u653e CPU \u538b\u529b<\/h3>\n<h4>ArkUI \u9ed8\u8ba4\u542f\u7528\u4e86\u786c\u4ef6\u52a0\u901f&#xff0c;\u4f46\u4ecd\u9700\u6ce8\u610f\u907f\u514d CPU \u5bc6\u96c6\u578b\u4efb\u52a1\u963b\u585e\u4e3b\u7ebf\u7a0b<\/h4>\n<p>\u5efa\u8bae&#xff1a;<\/p>\n<ul>\n<li>\u5c3d\u91cf\u5c06\u52a8\u753b\u3001\u56fe\u7247\u52a0\u8f7d\u7b49\u653e\u5728\u5f02\u6b65\u4efb\u52a1\u4e2d\u5904\u7406<\/li>\n<li>\u4f7f\u7528 requestAnimationFrame() \u8fdb\u884c\u5e73\u6ed1\u52a8\u753b\u6e32\u67d3<\/li>\n<\/ul>\n<h3>\u56fe\u7247\u52a0\u8f7d\u4f18\u5316\u6280\u5de7<\/h3>\n<h4>\u56fe\u7247\u5c3a\u5bf8\u3001\u683c\u5f0f\u3001\u52a0\u8f7d\u65b9\u5f0f\u90fd\u4f1a\u5f71\u54cd\u7ed8\u56fe\u6027\u80fd<\/h4>\n<h5>\u793a\u4f8b&#xff1a;\u907f\u514d\u52a0\u8f7d\u8fc7\u5927\u56fe\u7247&#xff0c;\u4f7f\u7528\u538b\u7f29\u56fe\u5e76\u7f13\u5b58<\/h5>\n<p><span class=\"token function\">Image<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;common\/avatar_small.webp&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">.<\/span><span class=\"token function\">width<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">100<\/span><span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">.<\/span><span class=\"token function\">height<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">100<\/span><span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">.<\/span><span class=\"token function\">objectFit<\/span><span class=\"token punctuation\">(<\/span>ImageFit<span class=\"token punctuation\">.<\/span>Cover<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u6280\u5de7&#xff1a;<\/p>\n<ul>\n<li>\u4f7f\u7528 .webp \u683c\u5f0f\u66ff\u4ee3 .png \u6216 .jpg<\/li>\n<li>\u5bf9\u56fe\u7247\u505a\u61d2\u52a0\u8f7d&#xff0c;\u53ea\u5728\u8fdb\u5165\u89c6\u53e3\u540e\u52a0\u8f7d<\/li>\n<li>\u672c\u5730\u7f13\u5b58\u9891\u7e41\u8bbf\u95ee\u7684\u56fe\u50cf&#xff0c;\u907f\u514d\u6bcf\u6b21\u90fd\u89e3\u7801<\/li>\n<\/ul>\n<h3>\u51cf\u5c11\u7ed8\u5236\u5c42\u7ea7\u4e0e\u89c6\u56fe\u5408\u5e76<\/h3>\n<h4>\u5e03\u5c40\u5c42\u7ea7\u8d8a\u6df1&#xff0c;\u7ed8\u56fe\u590d\u6742\u5ea6\u8d8a\u9ad8<\/h4>\n<h5>\u793a\u4f8b&#xff1a;\u907f\u514d\u5d4c\u5957\u591a\u5c42\u7ec4\u4ef6&#xff0c;\u7528 Flex \u66ff\u4ee3\u5d4c\u5957 Column &#043; Row<\/h5>\n<p><span class=\"token function\">Flex<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> direction<span class=\"token operator\">:<\/span> FlexDirection<span class=\"token punctuation\">.<\/span>Row <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token function\">Image<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;icon.png&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">width<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">40<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">height<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">40<\/span><span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token function\">Text<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u6807\u9898\u6587\u5b57&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">fontSize<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">18<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">margin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> left<span class=\"token operator\">:<\/span> <span class=\"token number\">10<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u63a8\u8350&#xff1a;<\/p>\n<ul>\n<li>\u4f7f\u7528 Flex \u8fdb\u884c\u6241\u5e73\u5316\u5e03\u5c40\u8bbe\u8ba1<\/li>\n<li>\u5408\u7406\u4f7f\u7528 Fragment 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punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n    duration<span class=\"token operator\">:<\/span> <span class=\"token number\">300<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    easing<span class=\"token operator\">:<\/span> Easing<span class=\"token punctuation\">.<\/span>InOutQuad<br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>xOffset <span class=\"token operator\">&#043;&#061;<\/span> <span class=\"token number\">50<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token 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class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token function\">LazyForEach<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>items<span class=\"token punctuation\">,<\/span> <span class=\"token punctuation\">(<\/span>item<span class=\"token punctuation\">,<\/span> index<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token function\">Column<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">Image<\/span><span class=\"token punctuation\">(<\/span><span class=\"token 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