{"id":100075,"date":"2026-09-03T21:17:02","date_gmt":"2026-09-03T13:17:02","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/100075.html"},"modified":"2026-09-03T21:17:02","modified_gmt":"2026-09-03T13:17:02","slug":"compose-codelab-%e4%bd%bf%e7%94%a8-material-3-%e5%9c%a8-compose-%e4%b8%ad%e8%ae%be%e7%bd%ae%e4%b8%bb%e9%a2%98","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/100075.html","title":{"rendered":"Compose Codelab - \u4f7f\u7528 Material 3 \u5728 Compose \u4e2d\u8bbe\u7f6e\u4e3b\u9898"},"content":{"rendered":"<h3>\u4f7f\u7528 Material 3 \u5728 Compose \u4e2d\u8bbe\u7f6e\u4e3b\u9898<\/h3>\n<ul>\n<li>\u5b98\u65b9\u6587\u6863&#xff1a;https:\/\/developer.android.google.cn\/codelabs\/jetpack-compose-theming?hl&#061;zh_cn#0<\/li>\n<\/ul>\n<h5>1\u3001\u914d\u8272\u65b9\u6848<\/h5>\n<h6>&#xff08;1&#xff09;\u57fa\u672c\u4ecb\u7ecd<\/h6>\n<li>\n<p>\u914d\u8272\u65b9\u6848\u7684\u57fa\u7840\u662f\u4e94\u79cd\u5173\u952e\u989c\u8272&#xff0c;\u5176\u4e2d\u6bcf\u79cd\u989c\u8272\u90fd\u5bf9\u5e94 Material 3 \u7ec4\u4ef6\u4f7f\u7528\u7684 13 \u8272\u8c03\u8c03\u8272\u677f\u4e4b\u4e00<\/p>\n<\/li>\n<li>\n<p>\u6bcf\u79cd\u5f3a\u8c03\u8272&#xff08;\u4e3b\u8272\u3001\u8f85\u8272\u3001\u7b2c\u4e09\u8272&#xff09;\u90fd\u4f1a\u63d0\u4f9b\u56db\u79cd\u4e0d\u540c\u8272\u8c03\u7684\u517c\u5bb9\u8272&#xff0c;\u4ee5\u4fbf\u8fdb\u884c\u914d\u5bf9\u3001\u5b9a\u4e49\u5f3a\u8c03\u6548\u679c\u548c\u89c6\u89c9\u8868\u73b0<\/p>\n<\/li>\n<li>\n<p>\u4e2d\u6027\u8272\u4e5f\u5206\u517c\u5bb9\u7684\u8272\u8c03&#xff0c;\u7528\u4e8e Surface \u548c\u80cc\u666f\u3002\u5f53\u8fd9\u4e9b\u989c\u8272\u88ab\u5e94\u7528\u4e8e\u4efb\u4f55 Surface \u65f6&#xff0c;\u5b83\u4eec\u5bf9\u4e8e\u7a81\u51fa\u6587\u672c\u56fe\u6807\u4e5f\u975e\u5e38\u91cd\u8981<\/p>\n<\/li>\n<p>\u9664\u4e86\u4e3b\u8272\u4e3b\u8272\u3001\u8f85\u8272\u3001\u7b2c\u4e09\u8272&#xff0c;\u5176\u4ed6\u989c\u8272\u90fd\u662f\u4e2d\u6027\u8272&#xff08;Neutral&#xff09;<\/p>\n<p>\u5b83\u4e3b\u8981\u7528\u6765\u505a\u80cc\u666f&#xff08;Background&#xff09;\u3001\u5361\u7247&#xff08;Surface&#xff09;\u3001\u6587\u5b57&#xff08;Text&#xff09;<\/p>\n<p>\u4f8b\u5982&#xff0c;\u4e3a\u4e86\u8ba9\u60ac\u6d6e\u64cd\u4f5c\u6309\u94ae&#xff08;FAB&#xff09;\u6210\u4e3a\u5f15\u4eba\u6ce8\u76ee\u7684\u6309\u94ae&#xff0c;\u53ef\u4ee5\u4f7f\u7528\u7b2c\u4e09\u8272<\/p>\n<h6>&#xff08;2&#xff09;\u751f\u6210\u914d\u8272\u65b9\u6848<\/h6>\n<li>\n<p>\u53ef\u4ee5\u624b\u52a8\u521b\u5efa\u81ea\u5b9a\u4e49 ColorScheme<\/p>\n<\/li>\n<li>\n<p>\u4e5f\u53ef\u4ee5\u4f7f\u7528 Material \u4e3b\u9898\u6784\u5efa\u5668&#xff0c;\u5e76\u4e14\u9009\u62e9\u5bfc\u51fa Compose \u4e3b\u9898\u4ee3\u7801&#xff1a;https:\/\/material-foundation.github.io\/material-theme-builder\/<\/p>\n<\/li>\n<li>\n<p>\u751f\u6210\u7684 Theme.kt \u6587\u4ef6\u5305\u542b\u6d45\u8272\u548c\u6df1\u8272\u914d\u8272\u65b9\u6848\u4ee5\u53ca\u5e94\u7528\u4e3b\u9898&#xff0c;\u540c\u65f6\u8fd8\u5305\u542b\u4e3b\u8981\u4e3b\u9898\u53ef\u7ec4\u5408\u51fd\u6570 AppTheme<\/p>\n<\/li>\n<p><span class=\"token annotation builtin\">&#064;Composable<\/span><br \/>\n<span class=\"token keyword\">fun<\/span> <span class=\"token function\">AppTheme<\/span><span class=\"token punctuation\">(<\/span><br \/>\n    darkTheme<span class=\"token operator\">:<\/span> Boolean <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">isSystemInDarkTheme<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token comment\">\/\/ Dynamic color is available on Android 12&#043;<\/span><br \/>\n    dynamicColor<span class=\"token operator\">:<\/span> Boolean <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    content<span class=\"token operator\">:<\/span> <span class=\"token annotation builtin\">&#064;Composable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">-&gt;<\/span> Unit<br \/>\n<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">val<\/span> colorScheme <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">when<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      dynamicColor <span class=\"token operator\">&amp;&amp;<\/span> Build<span class=\"token punctuation\">.<\/span>VERSION<span class=\"token punctuation\">.<\/span>SDK_INT <span class=\"token operator\">&gt;&#061;<\/span> Build<span class=\"token punctuation\">.<\/span>VERSION_CODES<span class=\"token punctuation\">.<\/span>S <span class=\"token operator\">-&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n          <span class=\"token keyword\">val<\/span> context <span class=\"token operator\">&#061;<\/span> LocalContext<span class=\"token punctuation\">.<\/span>current<br \/>\n          <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>darkTheme<span class=\"token punctuation\">)<\/span> <span class=\"token function\">dynamicDarkColorScheme<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token function\">dynamicLightColorScheme<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">)<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><\/p>\n<p>      darkTheme <span class=\"token operator\">-&gt;<\/span> darkScheme<br \/>\n      <span class=\"token keyword\">else<\/span> <span class=\"token operator\">-&gt;<\/span> lightScheme<br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token function\">MaterialTheme<\/span><span class=\"token punctuation\">(<\/span><br \/>\n    colorScheme <span class=\"token operator\">&#061;<\/span> colorScheme<span class=\"token punctuation\">,<\/span><br \/>\n    typography <span class=\"token operator\">&#061;<\/span> AppTypography<span class=\"token punctuation\">,<\/span><br \/>\n    content <span class=\"token operator\">&#061;<\/span> content<br \/>\n  <span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<li>\u5c06 MaterialTheme \u53ef\u7ec4\u5408\u9879\u5c01\u88c5\u5728 AppTheme \u51fd\u6570\u4e2d&#xff0c;\u63a5\u53d7\u4ee5\u4e0b\u53c2\u6570<\/li>\n<p>1. useDarkTheme&#xff1a;\u6b64\u53c2\u6570\u4f1a\u4e0e\u51fd\u6570 isSystemInDarkTheme \u76f8\u5173\u8054&#xff0c;\u7528\u4e8e\u89c2\u5bdf\u7cfb\u7edf\u4e3b\u9898\u8bbe\u7f6e\u5e76\u5e94\u7528\u6d45\u8272\u6216\u6df1\u8272\u4e3b\u9898<br \/>\n    \u5982\u679c\u60f3\u624b\u52a8\u8ba9\u5e94\u7528\u4fdd\u6301\u6d45\u8272\u6216\u6df1\u8272\u4e3b\u9898&#xff0c;\u53ef\u4ee5\u5c06\u5e03\u5c14\u503c\u4f20\u9012\u7ed9 useDarkTheme<\/p>\n<p>2. content&#xff1a;\u4e3b\u9898\u5c06\u88ab\u5e94\u7528\u5230\u7684\u5185\u5bb9<\/p>\n<li>\u5728\u9879\u76ee\u4e2d\u6b63\u786e\u96c6\u6210\u4e86\u901a\u8fc7 Material \u4e3b\u9898\u6784\u5efa\u5668\u751f\u6210\u7684\u5185\u5bb9\u540e&#xff08;Color.kt\u3001Theme.kt\u3001Type.kt&#xff09;&#xff0c;\u5c31\u53ef\u4ee5\u5728\u4ee3\u7801\u4e2d\u76f4\u63a5\u4f7f\u7528 MaterialTheme.colorScheme \u6765\u8bbf\u95ee\u8fd9\u4e9b\u5b9a\u4e49\u597d\u7684\u989c\u8272<\/li>\n<p><span class=\"token comment\">\/\/ Theme.kt \u4e2d\u7684\u5173\u952e\u914d\u7f6e\u4ee3\u7801<\/span><\/p>\n<p><span class=\"token annotation builtin\">&#064;Composable<\/span><br \/>\n<span class=\"token keyword\">fun<\/span> <span class=\"token function\">AppTheme<\/span><span class=\"token punctuation\">(<\/span><br \/>\n    darkTheme<span class=\"token operator\">:<\/span> Boolean <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">isSystemInDarkTheme<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token comment\">\/\/ Dynamic color is available on Android 12&#043;<\/span><br \/>\n    dynamicColor<span class=\"token operator\">:<\/span> Boolean <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    content<span class=\"token operator\">:<\/span> <span class=\"token annotation builtin\">&#064;Composable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">-&gt;<\/span> Unit<br \/>\n<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">val<\/span> colorScheme <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">when<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      dynamicColor <span class=\"token operator\">&amp;&amp;<\/span> Build<span class=\"token punctuation\">.<\/span>VERSION<span class=\"token punctuation\">.<\/span>SDK_INT <span class=\"token operator\">&gt;&#061;<\/span> Build<span class=\"token punctuation\">.<\/span>VERSION_CODES<span class=\"token punctuation\">.<\/span>S <span class=\"token operator\">-&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n          <span class=\"token keyword\">val<\/span> context <span class=\"token operator\">&#061;<\/span> LocalContext<span class=\"token punctuation\">.<\/span>current<br \/>\n          <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>darkTheme<span class=\"token punctuation\">)<\/span> <span class=\"token function\">dynamicDarkColorScheme<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token function\">dynamicLightColorScheme<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">)<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><\/p>\n<p>      darkTheme <span class=\"token operator\">-&gt;<\/span> darkScheme<br \/>\n      <span class=\"token keyword\">else<\/span> <span class=\"token operator\">-&gt;<\/span> lightScheme<br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token function\">MaterialTheme<\/span><span class=\"token punctuation\">(<\/span><br \/>\n    colorScheme <span class=\"token operator\">&#061;<\/span> colorScheme<span class=\"token punctuation\">,<\/span><br \/>\n    typography <span class=\"token operator\">&#061;<\/span> AppTypography<span class=\"token punctuation\">,<\/span><br \/>\n    content <span class=\"token operator\">&#061;<\/span> content<br \/>\n  <span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h6>&#xff08;3&#xff09;\u989c\u8272\u89d2\u8272<\/h6>\n<li>\n<p>\u4e3b\u8272\u662f\u57fa\u7840\u989c\u8272&#xff0c;\u7528\u4e8e\u4e3b\u8981\u7ec4\u4ef6&#xff0c;\u4f8b\u5982&#xff0c;\u663e\u773c\u7684\u6309\u94ae\u3001\u6d3b\u52a8\u72b6\u6001<\/p>\n<\/li>\n<li>\n<p>\u8f85\u8272\u7528\u4e8e\u754c\u9762\u4e2d\u4e0d\u592a\u663e\u773c\u7684\u7ec4\u4ef6&#xff0c;\u4f8b\u5982&#xff0c;\u8fc7\u6ee4\u7ec4\u4ef6<\/p>\n<\/li>\n<li>\n<p>\u7b2c\u4e09\u8272\u7528\u4e8e\u63d0\u4f9b\u5bf9\u6bd4\u9c9c\u660e\u7684\u5f3a\u8c03\u8272<\/p>\n<\/li>\n<li>\n<p>\u4e2d\u6027\u8272\u7528\u4e8e\u5e94\u7528\u4e2d\u7684\u80cc\u666f\u548c Surface<\/p>\n<\/li>\n<h6>&#xff08;4&#xff09;\u8272\u8c03\u548c\u9634\u5f71\u9ad8\u5ea6<\/h6>\n<li>\n<p>\u5728\u754c\u9762\u4e0a&#xff0c;\u9ad8\u5ea6&#xff08;elevation&#xff09;\u5c31\u662f\u4e00\u4e2a\u7ec4\u4ef6\u6d6e\u5728\u80cc\u666f\u4e0a\u6709\u591a\u9ad8<\/p>\n<\/li>\n<li>\n<p>\u4f20\u7edf\u505a\u6cd5\u662f\u7528\u9634\u5f71&#xff08;shadow&#xff09;\u6765\u8868\u793a\u9ad8\u5ea6&#xff0c;\u8d8a\u9ad8&#xff0c;\u9634\u5f71\u8d8a\u5927\u8d8a\u6df1<\/p>\n<\/li>\n<li>\n<p>\u8272\u8c03\u9ad8\u5ea6\u662f\u7528\u989c\u8272\u6765\u6697\u793a\u9ad8\u5ea6&#xff0c;\u800c\u4e0d\u662f\u53ea\u9760\u9634\u5f71<\/p>\n<\/li>\n<li>\n<p>\u5f53\u4e00\u4e2a\u7ec4\u4ef6\u7684\u9ad8\u5ea6\u63d0\u9ad8\u65f6&#xff0c;\u5b83\u9664\u4e86\u9634\u5f71\u53d8\u91cd&#xff0c;\u5b83\u7684\u80cc\u666f\u989c\u8272\u4e5f\u4f1a\u53d1\u751f\u5fae\u5999\u53d8\u5316\u3002\u8fd9\u4e2a\u989c\u8272\u53d8\u5316\u662f\u4ece\u4e3b\u8272\u91cc\u63d0\u53d6\u7684\u8272\u8c03\u53e0\u52a0\u5c42<\/p>\n<\/li>\n<li>\n<p>\u7b80\u5355\u6765\u8bf4&#xff0c;\u7ec4\u4ef6\u6d6e\u5f97\u8d8a\u9ad8&#xff0c;\u5b83\u5c31\u8d8a\u67d3\u4e0a\u4e00\u70b9\u4e3b\u8272\u7684\u8272\u8c03<\/p>\n<\/li>\n<p><span class=\"token annotation builtin\">&#064;Composable<\/span><br \/>\n<span class=\"token keyword\">fun<\/span> <span class=\"token function\">TonalElevation_ShadowElevation_Demo<\/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><br \/>\n        modifier <span class=\"token operator\">&#061;<\/span> Modifier<br \/>\n            <span class=\"token punctuation\">.<\/span><span class=\"token function\">fillMaxSize<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token punctuation\">.<\/span><span class=\"token function\">padding<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">16<\/span><span class=\"token punctuation\">.<\/span>dp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        verticalArrangement <span class=\"token operator\">&#061;<\/span> Arrangement<span class=\"token punctuation\">.<\/span><span class=\"token function\">spacedBy<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">16<\/span><span class=\"token punctuation\">.<\/span>dp<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">Surface<\/span><span class=\"token punctuation\">(<\/span><br \/>\n            shadowElevation <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">8<\/span><span class=\"token punctuation\">.<\/span>dp<span class=\"token punctuation\">,<\/span><br \/>\n            tonalElevation <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">.<\/span>dp<span class=\"token punctuation\">,<\/span><br \/>\n            modifier <span class=\"token operator\">&#061;<\/span> Modifier<span class=\"token punctuation\">.<\/span><span class=\"token function\">fillMaxWidth<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <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-literal singleline\"><span class=\"token string\">&#034;\u9634\u5f71 8.dp&#xff0c;\u65e0\u8272\u8c03&#034;<\/span><\/span><span class=\"token punctuation\">,<\/span> modifier <span class=\"token operator\">&#061;<\/span> Modifier<span class=\"token punctuation\">.<\/span><span class=\"token function\">padding<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">16<\/span><span class=\"token punctuation\">.<\/span>dp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token function\">Surface<\/span><span class=\"token punctuation\">(<\/span><br \/>\n            shadowElevation <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">.<\/span>dp<span class=\"token punctuation\">,<\/span><br \/>\n            tonalElevation <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">8<\/span><span class=\"token punctuation\">.<\/span>dp<span class=\"token punctuation\">,<\/span><br \/>\n            modifier <span class=\"token operator\">&#061;<\/span> Modifier<span class=\"token punctuation\">.<\/span><span class=\"token function\">fillMaxWidth<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <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-literal singleline\"><span class=\"token string\">&#034;\u8272\u8c03 8.dp&#xff0c;\u65e0\u9634\u5f71&#034;<\/span><\/span><span class=\"token punctuation\">,<\/span> modifier <span class=\"token operator\">&#061;<\/span> Modifier<span class=\"token punctuation\">.<\/span><span class=\"token function\">padding<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">16<\/span><span class=\"token punctuation\">.<\/span>dp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><\/p>\n<p>        <span class=\"token function\">Surface<\/span><span class=\"token punctuation\">(<\/span><br \/>\n            shadowElevation <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">8<\/span><span class=\"token punctuation\">.<\/span>dp<span class=\"token punctuation\">,<\/span><br \/>\n            tonalElevation <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">8<\/span><span class=\"token punctuation\">.<\/span>dp<span class=\"token punctuation\">,<\/span><br \/>\n            modifier <span class=\"token operator\">&#061;<\/span> Modifier<span class=\"token punctuation\">.<\/span><span class=\"token function\">fillMaxWidth<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <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-literal singleline\"><span class=\"token string\">&#034;\u9634\u5f71 &#043; \u8272\u8c03 \u90fd\u662f 8.dp&#034;<\/span><\/span><span class=\"token punctuation\">,<\/span> modifier <span class=\"token operator\">&#061;<\/span> Modifier<span class=\"token punctuation\">.<\/span><span class=\"token function\">padding<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">16<\/span><span class=\"token punctuation\">.<\/span>dp<span class=\"token punctuation\">)<\/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<p><span class=\"token annotation builtin\">&#064;Preview<\/span><span class=\"token punctuation\">(<\/span>showBackground <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token annotation builtin\">&#064;Composable<\/span><br \/>\n<span class=\"token keyword\">fun<\/span> <span class=\"token function\">TonalElevation_ShadowElevation_Demo_Preview<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">TonalElevation_ShadowElevation_Demo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>2\u3001\u52a8\u6001\u914d\u8272<\/h5>\n<li>\n<p>\u4f7f\u7528\u52a8\u6001\u989c\u8272&#xff0c;\u7b97\u6cd5\u4f1a\u4ece\u7528\u6237\u7684\u58c1\u7eb8\u4e2d\u6d3e\u751f\u81ea\u5b9a\u4e49\u989c\u8272&#xff0c;\u4ee5\u5c06\u5176\u5e94\u7528\u5230\u5176\u5e94\u7528\u548c\u7cfb\u7edf\u754c\u9762<\/p>\n<\/li>\n<li>\n<p>\u52a8\u6001\u989c\u8272\u9002\u7528\u4e8e Android 12 \u53ca\u66f4\u9ad8\u7248\u672c<\/p>\n<\/li>\n<li>\n<p>\u5982\u679c\u52a8\u6001\u989c\u8272\u53ef\u7528&#xff0c;\u53ef\u4ee5\u4f7f\u7528 dynamicLightColorScheme \u51fd\u6570\u6216 dynamicDarkColorScheme \u51fd\u6570\u8bbe\u7f6e\u52a8\u6001\u914d\u8272\u65b9\u6848<\/p>\n<\/li>\n<li>\n<p>\u5982\u679c\u4e0d\u53ef\u7528&#xff0c;\u5e94\u56de\u9000\u91c7\u7528\u9ed8\u8ba4\u7684\u6d45\u8272\u6216\u6df1\u8272\u7684 ColorScheme<\/p>\n<\/li>\n<li>\n<p>\u72b6\u6001\u680f\u7684\u6837\u5f0f\u80fd\u6839\u636e\u7528\u4e8e\u4e3a\u5e94\u7528\u8bbe\u7f6e\u4e3b\u9898\u7684\u914d\u8272\u65b9\u6848\u8fdb\u884c\u52a8\u6001\u53d8\u5316<\/p>\n<\/li>\n<p><span class=\"token comment\">\/\/ Theme.kt \u4e2d\u7684\u5173\u952e\u914d\u7f6e\u4ee3\u7801<\/span><\/p>\n<p><span class=\"token annotation builtin\">&#064;Composable<\/span><br \/>\n<span class=\"token keyword\">fun<\/span> <span class=\"token function\">AppTheme<\/span><span class=\"token punctuation\">(<\/span><br \/>\n    darkTheme<span class=\"token operator\">:<\/span> Boolean <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">isSystemInDarkTheme<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token comment\">\/\/ Dynamic color is available on Android 12&#043;<\/span><br \/>\n    dynamicColor<span class=\"token operator\">:<\/span> Boolean <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    content<span class=\"token operator\">:<\/span> <span class=\"token annotation builtin\">&#064;Composable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">-&gt;<\/span> Unit<br \/>\n<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">val<\/span> colorScheme <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">when<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      dynamicColor <span class=\"token operator\">&amp;&amp;<\/span> Build<span class=\"token punctuation\">.<\/span>VERSION<span class=\"token punctuation\">.<\/span>SDK_INT <span class=\"token operator\">&gt;&#061;<\/span> Build<span class=\"token punctuation\">.<\/span>VERSION_CODES<span class=\"token punctuation\">.<\/span>S <span class=\"token operator\">-&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n          <span class=\"token keyword\">val<\/span> context <span class=\"token operator\">&#061;<\/span> LocalContext<span class=\"token punctuation\">.<\/span>current<br \/>\n          <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>darkTheme<span class=\"token punctuation\">)<\/span> <span class=\"token function\">dynamicDarkColorScheme<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token function\">dynamicLightColorScheme<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">)<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><\/p>\n<p>      darkTheme <span class=\"token operator\">-&gt;<\/span> darkScheme<br \/>\n      <span class=\"token keyword\">else<\/span> <span class=\"token operator\">-&gt;<\/span> lightScheme<br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token function\">MaterialTheme<\/span><span class=\"token punctuation\">(<\/span><br \/>\n    colorScheme <span class=\"token operator\">&#061;<\/span> colorScheme<span class=\"token punctuation\">,<\/span><br \/>\n    typography <span class=\"token operator\">&#061;<\/span> AppTypography<span class=\"token punctuation\">,<\/span><br \/>\n    content <span class=\"token operator\">&#061;<\/span> content<br \/>\n  <span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>3\u3001\u6392\u7248<\/h5>\n<li>\n<p>Material Design 3 \u5b9a\u4e49\u4e86\u4e00\u4e2a\u5b57\u4f53\u6bd4\u4f8b\u3002\u547d\u540d\u548c\u5206\u7ec4\u5df2\u7b80\u5316\u4e3a&#xff1a;\u663e\u793a\u3001\u5927\u6807\u9898\u3001\u6807\u9898\u3001\u6b63\u6587\u3001\u6807\u7b7e\u3002\u6bcf\u4e2a\u90fd\u6709\u5927\u53f7\u3001\u4e2d\u53f7\u548c\u5c0f\u53f7<\/p>\n<\/li>\n<li>\n<p>Compose \u63d0\u4f9b\u4e86 M3 Typography \u7c7b\u4ee5\u53ca\u73b0\u6709\u7684 TextStyle \u548c font-related \u7c7b&#xff0c;\u7528\u4ee5\u5bf9 Material 3 \u5b57\u4f53\u6bd4\u4f8b\u8fdb\u884c\u5efa\u6a21<\/p>\n<\/li>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token function\">Typography<\/span><span class=\"token punctuation\">(<\/span><br \/>\n    <span class=\"token keyword\">val<\/span> displayLarge<span class=\"token operator\">:<\/span> TextStyle <span class=\"token operator\">&#061;<\/span> TypographyTokens<span class=\"token punctuation\">.<\/span>DisplayLarge<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token keyword\">val<\/span> displayMedium<span class=\"token operator\">:<\/span> TextStyle <span class=\"token operator\">&#061;<\/span> TypographyTokens<span class=\"token punctuation\">.<\/span>DisplayMedium<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token keyword\">val<\/span> displaySmall<span class=\"token operator\">:<\/span> TextStyle <span class=\"token operator\">&#061;<\/span> TypographyTokens<span class=\"token punctuation\">.<\/span>DisplaySmall<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token keyword\">val<\/span> headlineLarge<span class=\"token operator\">:<\/span> TextStyle <span class=\"token operator\">&#061;<\/span> TypographyTokens<span class=\"token punctuation\">.<\/span>HeadlineLarge<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token keyword\">val<\/span> headlineMedium<span class=\"token operator\">:<\/span> TextStyle <span class=\"token operator\">&#061;<\/span> TypographyTokens<span class=\"token punctuation\">.<\/span>HeadlineMedium<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token keyword\">val<\/span> headlineSmall<span class=\"token operator\">:<\/span> TextStyle <span class=\"token operator\">&#061;<\/span> TypographyTokens<span class=\"token punctuation\">.<\/span>HeadlineSmall<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token keyword\">val<\/span> titleLarge<span class=\"token operator\">:<\/span> TextStyle <span class=\"token operator\">&#061;<\/span> TypographyTokens<span class=\"token punctuation\">.<\/span>TitleLarge<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token keyword\">val<\/span> titleMedium<span class=\"token operator\">:<\/span> TextStyle <span class=\"token operator\">&#061;<\/span> TypographyTokens<span class=\"token punctuation\">.<\/span>TitleMedium<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token keyword\">val<\/span> titleSmall<span class=\"token operator\">:<\/span> TextStyle <span class=\"token operator\">&#061;<\/span> TypographyTokens<span class=\"token punctuation\">.<\/span>TitleSmall<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token keyword\">val<\/span> bodyLarge<span class=\"token operator\">:<\/span> TextStyle <span class=\"token operator\">&#061;<\/span> TypographyTokens<span class=\"token punctuation\">.<\/span>BodyLarge<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token keyword\">val<\/span> bodyMedium<span class=\"token operator\">:<\/span> TextStyle <span class=\"token operator\">&#061;<\/span> TypographyTokens<span class=\"token punctuation\">.<\/span>BodyMedium<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token keyword\">val<\/span> bodySmall<span class=\"token operator\">:<\/span> TextStyle <span class=\"token operator\">&#061;<\/span> TypographyTokens<span class=\"token punctuation\">.<\/span>BodySmall<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token keyword\">val<\/span> labelLarge<span class=\"token operator\">:<\/span> TextStyle <span class=\"token operator\">&#061;<\/span> TypographyTokens<span class=\"token punctuation\">.<\/span>LabelLarge<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token keyword\">val<\/span> labelMedium<span class=\"token operator\">:<\/span> TextStyle <span class=\"token operator\">&#061;<\/span> TypographyTokens<span class=\"token punctuation\">.<\/span>LabelMedium<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token keyword\">val<\/span> labelSmall<span class=\"token operator\">:<\/span> TextStyle <span class=\"token operator\">&#061;<\/span> TypographyTokens<span class=\"token punctuation\">.<\/span>LabelSmall<span class=\"token punctuation\">,<\/span><br \/>\n<span class=\"token punctuation\">)<\/span><\/p>\n<p>Typography \u628a\u6574\u4e2a App \u91cc\u6240\u6709\u8981\u7528\u5230\u7684\u6587\u5b57\u6837\u5f0f\u90fd\u6253\u5305\u597d\u4e86<\/p>\n<p>\u4f8b\u5982&#xff0c;headlineLarge&#xff08;\u5927\u53f7\u5927\u6807\u9898&#xff09;\u3001titleMedium&#xff08;\u4e2d\u53f7\u6807\u9898&#xff09;\u3001bodyLarge&#xff08;\u5927\u53f7\u6b63\u6587&#xff09;\u3001labelSmall&#xff08;\u5c0f\u53f7\u6807\u7b7e&#xff09;<\/p>\n<p>\u4e0d\u9700\u8981\u4e00\u4e2a\u4e00\u4e2a\u5730\u53bb\u8bbe\u7f6e\u5b57\u4f53\u5927\u5c0f\u3001\u7c97\u7ec6\u3001\u884c\u9ad8&#xff0c;\u53ea\u8981\u5b9a\u4e49\u4e00\u4e2a\u5168\u5c40\u7684 Typography&#xff0c;\u6574\u4e2a App \u7684\u4e3b\u9898\u5c31\u4f1a\u81ea\u52a8\u5e94\u7528\u8fd9\u4e9b\u6837\u5f0f&#xff0c;\u4fdd\u8bc1\u8bbe\u8ba1\u7edf\u4e00<\/p>\n<p>TextStyle \u662f\u5177\u4f53\u7684\u6837\u5f0f\u7c7b&#xff0c;\u5b83\u5305\u542b\u4e86\u6240\u6709\u5173\u4e8e\u6587\u5b57\u7684\u7ec6\u8282\u5c5e\u6027&#xff0c;\u4f8b\u5982<\/p>\n<p>color&#xff08;\u989c\u8272&#xff09;\u3001fontSize&#xff08;\u5b57\u53f7&#xff09;\u3001fontWeight&#xff08;\u7c97\u7ec6&#xff09;<\/p>\n<p>fontFamily&#xff08;\u5b57\u4f53\u5bb6\u65cf&#xff09;\u3001letterSpacing&#xff08;\u5b57\u95f4\u8ddd&#xff09;\u3001lineHeight&#xff08;\u884c\u9ad8&#xff09;<\/p>\n<p>Typography \u91cc\u9762\u5176\u5b9e\u5c31\u662f\u4e00\u4e2a\u4e00\u4e2a\u7684 TextStyle\u3002\u4f8b\u5982&#xff0c;Typography.bodyLarge \u672c\u8d28\u4e0a\u5c31\u662f\u4e00\u4e2a\u88ab\u9884\u8bbe\u597d\u53c2\u6570\u7684 TextStyle \u5bf9\u8c61<\/p>\n<p>font-related \u7c7b\u6307\u7684\u662f\u548c\u5b57\u4f53\u76f8\u5173\u7684\u72ec\u7acb\u5de5\u5177\u7c7b<\/p>\n<p>FontFamily&#xff0c;\u5b9a\u4e49\u5b57\u4f53&#xff0c;\u4f8b\u5982&#xff0c;\u886c\u7ebf\u4f53\u3001\u65e0\u886c\u7ebf\u4f53\u6216\u81ea\u5b9a\u4e49\u4e0b\u8f7d\u5b57\u4f53<\/p>\n<p>FontWeight&#xff0c;\u5b9a\u4e49\u7c97\u7ec6&#xff0c;\u4f8b\u5982&#xff0c;Bold\u3001Light<\/p>\n<p>FontStyle&#xff0c;\u5b9a\u4e49\u98ce\u683c&#xff0c;\u4f8b\u5982&#xff0c;\u6b63\u5e38\u3001\u659c\u4f53<\/p>\n<li>\u5b9a\u4e49\u5e76\u4f20\u9012\u7ed9 MaterialTheme \u540e&#xff0c;\u4f7f\u7528 MaterialTheme.typography \u8bbf\u95ee\u5f53\u524d\u4e3b\u9898\u7684\u6392\u7248\u6837\u5f0f<\/li>\n<p><span class=\"token keyword\">val<\/span> typography <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">Typography<\/span><span class=\"token punctuation\">(<\/span><br \/>\n    headlineSmall <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">TextStyle<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        fontWeight <span class=\"token operator\">&#061;<\/span> FontWeight<span class=\"token punctuation\">.<\/span>SemiBold<span class=\"token punctuation\">,<\/span><br \/>\n        fontSize <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">24<\/span><span class=\"token punctuation\">.<\/span>sp<span class=\"token punctuation\">,<\/span><br \/>\n        lineHeight <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">32<\/span><span class=\"token punctuation\">.<\/span>sp<span class=\"token punctuation\">,<\/span><br \/>\n        letterSpacing <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">.<\/span>sp<br \/>\n    <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    titleLarge <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">TextStyle<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        fontWeight <span class=\"token operator\">&#061;<\/span> FontWeight<span class=\"token punctuation\">.<\/span>Normal<span class=\"token punctuation\">,<\/span><br \/>\n        fontSize <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">18<\/span><span class=\"token punctuation\">.<\/span>sp<span class=\"token punctuation\">,<\/span><br \/>\n        lineHeight <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">28<\/span><span class=\"token punctuation\">.<\/span>sp<span class=\"token punctuation\">,<\/span><br \/>\n        letterSpacing <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">.<\/span>sp<br \/>\n    <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    bodyLarge <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">TextStyle<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        fontWeight <span class=\"token operator\">&#061;<\/span> FontWeight<span class=\"token punctuation\">.<\/span>Normal<span class=\"token punctuation\">,<\/span><br \/>\n        fontSize <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">16<\/span><span class=\"token punctuation\">.<\/span>sp<span class=\"token punctuation\">,<\/span><br \/>\n        lineHeight <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">24<\/span><span class=\"token punctuation\">.<\/span>sp<span class=\"token punctuation\">,<\/span><br \/>\n        letterSpacing <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0.15<\/span><span class=\"token punctuation\">.<\/span>sp<br \/>\n    <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    bodyMedium <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">TextStyle<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        fontWeight <span class=\"token operator\">&#061;<\/span> FontWeight<span class=\"token punctuation\">.<\/span>Medium<span class=\"token punctuation\">,<\/span><br \/>\n        fontSize <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">14<\/span><span class=\"token punctuation\">.<\/span>sp<span class=\"token punctuation\">,<\/span><br \/>\n        lineHeight <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">20<\/span><span class=\"token punctuation\">.<\/span>sp<span class=\"token punctuation\">,<\/span><br \/>\n        letterSpacing <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0.25<\/span><span class=\"token punctuation\">.<\/span>sp<br \/>\n    <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    labelMedium <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">TextStyle<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        fontWeight <span class=\"token operator\">&#061;<\/span> FontWeight<span class=\"token punctuation\">.<\/span>SemiBold<span class=\"token punctuation\">,<\/span><br \/>\n        fontSize <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">12<\/span><span class=\"token punctuation\">.<\/span>sp<span class=\"token punctuation\">,<\/span><br \/>\n        lineHeight <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">16<\/span><span class=\"token punctuation\">.<\/span>sp<span class=\"token punctuation\">,<\/span><br \/>\n        letterSpacing <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0.5<\/span><span class=\"token punctuation\">.<\/span>sp<br \/>\n    <span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token annotation builtin\">&#064;Composable<\/span><br \/>\n<span class=\"token keyword\">fun<\/span> <span class=\"token function\">AppTheme<\/span><span class=\"token punctuation\">(<\/span><br \/>\n    useDarkTheme<span class=\"token operator\">:<\/span> Boolean <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">isSystemInDarkTheme<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    content<span class=\"token operator\">:<\/span> <span class=\"token annotation builtin\">&#064;Composable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">-&gt;<\/span> Unit<br \/>\n<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token operator\">..<\/span><span class=\"token punctuation\">.<\/span><\/p>\n<p>    <span class=\"token function\">MaterialTheme<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        colorScheme <span class=\"token operator\">&#061;<\/span> colors<span class=\"token punctuation\">,<\/span><br \/>\n        typography <span class=\"token operator\">&#061;<\/span> typography<span class=\"token punctuation\">,<\/span><br \/>\n        content <span class=\"token operator\">&#061;<\/span> content<br \/>\n    <span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<li>\u672a\u5c06\u6392\u7248\u5e94\u7528\u4e8e Text \u53ef\u7ec4\u5408\u9879&#xff0c;\u9ed8\u8ba4\u60c5\u51b5\u4e0b&#xff0c;\u6240\u6709\u6587\u672c\u90fd\u4f1a\u56de\u9000\u5230 Typography.bodyLarge<\/li>\n<h5>4\u3001\u5f62\u72b6<\/h5>\n<li>\n<p>Compose \u63d0\u4f9b\u5e26\u6709\u6269\u5c55\u53c2\u6570\u7684 Shapes \u7c7b\u6765\u5b9e\u73b0\u65b0\u7684 M3 \u5f62\u72b6<\/p>\n<\/li>\n<li>\n<p>\u5f62\u72b6\u6bd4\u4f8b\u4e2d\u5305\u542b\u4e0d\u540c\u5927\u5c0f\u7684\u5f62\u72b6&#xff1a;\u7279\u5c0f\u3001\u5c0f\u3001\u4e2d\u3001\u5927\u3001\u7279\u5927<\/p>\n<\/li>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token function\">Shapes<\/span><span class=\"token punctuation\">(<\/span><br \/>\n    <span class=\"token keyword\">val<\/span> extraSmall<span class=\"token operator\">:<\/span> CornerBasedShape <span class=\"token operator\">&#061;<\/span> ShapeDefaults<span class=\"token punctuation\">.<\/span>ExtraSmall<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token keyword\">val<\/span> small<span class=\"token operator\">:<\/span> CornerBasedShape <span class=\"token operator\">&#061;<\/span> ShapeDefaults<span class=\"token punctuation\">.<\/span>Small<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token keyword\">val<\/span> medium<span class=\"token operator\">:<\/span> CornerBasedShape <span class=\"token operator\">&#061;<\/span> ShapeDefaults<span class=\"token punctuation\">.<\/span>Medium<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token keyword\">val<\/span> large<span class=\"token operator\">:<\/span> CornerBasedShape <span class=\"token operator\">&#061;<\/span> ShapeDefaults<span class=\"token punctuation\">.<\/span>Large<span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token keyword\">val<\/span> extraLarge<span class=\"token operator\">:<\/span> CornerBasedShape <span class=\"token operator\">&#061;<\/span> ShapeDefaults<span class=\"token punctuation\">.<\/span>ExtraLarge<span class=\"token punctuation\">,<\/span><br \/>\n<span class=\"token punctuation\">)<\/span><\/p>\n<li>\u5b9a\u4e49\u5f62\u72b6\u540e&#xff0c;\u5e76\u4f20\u9012\u7ed9 MaterialTheme \u540e&#xff0c;\u4f7f\u7528 MaterialTheme.shape \u5c06\u5f62\u72b6\u5e94\u7528\u4e8e\u7ec4\u4ef6<\/li>\n<p><span class=\"token annotation builtin\">&#064;Composable<\/span><br \/>\n<span class=\"token keyword\">fun<\/span> <span class=\"token function\">AppTheme<\/span><span class=\"token punctuation\">(<\/span><br \/>\n    useDarkTheme<span class=\"token operator\">:<\/span> Boolean <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">isSystemInDarkTheme<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    content<span class=\"token operator\">:<\/span> <span class=\"token annotation builtin\">&#064;Composable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">-&gt;<\/span> Unit<br \/>\n<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token operator\">..<\/span><span class=\"token punctuation\">.<\/span><\/p>\n<p>    <span class=\"token function\">MaterialTheme<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        colorScheme <span class=\"token operator\">&#061;<\/span> colors<span class=\"token punctuation\">,<\/span><br \/>\n        typography <span class=\"token operator\">&#061;<\/span> typography<span class=\"token punctuation\">,<\/span><br \/>\n        shapes <span class=\"token operator\">&#061;<\/span> shapes<span class=\"token punctuation\">,<\/span><br \/>\n        content <span class=\"token operator\">&#061;<\/span> content<br \/>\n    <span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">val<\/span> shapes <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">Shapes<\/span><span class=\"token punctuation\">(<\/span><br \/>\n   extraSmall <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">RoundedCornerShape<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">.<\/span>dp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n   small <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">RoundedCornerShape<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">8<\/span><span class=\"token punctuation\">.<\/span>dp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n   medium <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">RoundedCornerShape<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">16<\/span><span class=\"token punctuation\">.<\/span>dp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n   large <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">RoundedCornerShape<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">24<\/span><span class=\"token punctuation\">.<\/span>dp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n   extraLarge <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">RoundedCornerShape<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">32<\/span><span class=\"token punctuation\">.<\/span>dp<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">)<\/span><\/p>\n<li>\u8fd8\u53ef\u4ee5\u4f7f\u7528\u53e6\u5916\u4e24\u79cd\u5f62\u72b6&#xff0c;RectangleShape \u548c CircleShape<\/li>\n<h5>5\u3001\u5f3a\u8c03\u65b9\u5f0f<\/h5>\n<li>\n<p>\u5f3a\u8c03&#xff0c;\u5373\u7a81\u51fa\u663e\u793a&#xff0c;\u4f8b\u5982&#xff0c;\u6807\u9898\u8981\u6bd4\u6b63\u6587\u663e\u773c<\/p>\n<\/li>\n<li>\n<p>M3 \u63d0\u4f9b\u4e86\u4e24\u79cd\u65b9\u5f0f\u505a\u5f3a\u8c03<\/p>\n<\/li>\n<p>\u7528\u989c\u8272\u7ec4\u5408&#xff0c;\u4f8b\u5982&#xff0c;\u6df1\u8272\u80cc\u666f\u914d\u6d45\u8272\u6587\u5b57&#xff0c;\u6d45\u8272\u80cc\u666f\u914d\u6df1\u8272\u6587\u5b57<\/p>\n<p>\u7528\u5b57\u4f53\u7c97\u7ec6&#xff0c;\u4f8b\u5982&#xff0c;\u6807\u9898\u7528\u7c97\u4f53&#xff0c;\u6b63\u6587\u7528\u7ec6\u4f53<\/p>\n<hr \/>\n<h3>\u8865\u5145\u5b66\u4e60<\/h3>\n<h5>1\u3001\u5207\u6362\u72b6\u6001\u680f\u56fe\u6807\u989c\u8272<\/h5>\n<p><span class=\"token keyword\">val<\/span> view <span class=\"token operator\">&#061;<\/span> LocalView<span class=\"token punctuation\">.<\/span>current<br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>view<span class=\"token punctuation\">.<\/span>isInEditMode<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    SideEffect <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">val<\/span> window <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span>view<span class=\"token punctuation\">.<\/span>context <span class=\"token keyword\">as<\/span> Activity<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>window<br \/>\n        WindowCompat<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInsetsController<\/span><span class=\"token punctuation\">(<\/span>window<span class=\"token punctuation\">,<\/span> view<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>isAppearanceLightStatusBars <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">!<\/span>darkTheme<br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h6>&#xff08;1&#xff09;\u83b7\u53d6\u5f53\u524d\u89c6\u56fe<\/h6>\n<p><span class=\"token keyword\">val<\/span> view <span class=\"token operator\">&#061;<\/span> LocalView<span class=\"token punctuation\">.<\/span>current<\/p>\n<ul>\n<li>LocalView.current \u83b7\u53d6\u5f53\u524d Compose \u754c\u9762\u4f9d\u9644\u7684 View \u5bf9\u8c61&#xff0c;\u5373 Android \u4f20\u7edf\u7684 View \u7cfb\u7edf\u5b9e\u4f8b<\/li>\n<\/ul>\n<h6>&#xff08;2&#xff09;\u907f\u514d\u9884\u89c8\u5d29\u6e83<\/h6>\n<p><span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>view<span class=\"token punctuation\">.<\/span>isInEditMode<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token operator\">..<\/span><span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">}<\/span><\/p>\n<li>\n<p>isInEditMode \u7528\u4e8e\u5224\u65ad\u5f53\u524d\u662f\u5426\u5904\u4e8e Android Studio \u7684\u9884\u89c8\u6a21\u5f0f<\/p>\n<\/li>\n<li>\n<p>\u5728\u9884\u89c8\u6a21\u5f0f\u4e0b\u6ca1\u6709\u771f\u5b9e\u7684 Activity \u548c Window&#xff0c;\u5982\u679c\u6267\u884c\u4e0b\u9762\u7684\u4ee3\u7801\u4f1a\u629b\u51fa\u5f02\u5e38<\/p>\n<\/li>\n<li>\n<p>\u8fd9\u4e2a\u5224\u65ad\u786e\u4fdd\u903b\u8f91\u53ea\u5728\u771f\u673a\u6216\u6a21\u62df\u5668\u8fd0\u884c\u65f6\u751f\u6548<\/p>\n<\/li>\n<h6>&#xff08;3&#xff09;\u526f\u4f5c\u7528\u6267\u884c<\/h6>\n<p>SideEffect <span class=\"token punctuation\">{<\/span> <span class=\"token operator\">..<\/span><span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">)<\/span><\/p>\n<li>\n<p>SideEffect \u662f Compose \u4e2d\u7684\u4e00\u4e2a\u526f\u4f5c\u7528 API<\/p>\n<\/li>\n<li>\n<p>SideEffect \u4fdd\u8bc1\u91cc\u9762\u7684\u4ee3\u7801\u6bcf\u6b21\u91cd\u7ec4\u5b8c\u6210\u540e\u90fd\u4f1a\u6267\u884c<\/p>\n<\/li>\n<li>\n<p>\u4fee\u6539\u72b6\u6001\u680f\u5c5e\u4e8e\u5916\u90e8\u547d\u4ee4\u5f0f\u64cd\u4f5c&#xff0c;\u8981\u786e\u4fdd\u5728 UI \u7ed8\u5236\u5230\u5c4f\u5e55\u4e0a\u4e4b\u540e\u7acb\u5373\u540c\u6b65\u6267\u884c&#xff0c;\u907f\u514d\u754c\u9762\u95ea\u70c1<\/p>\n<\/li>\n<h6>&#xff08;4&#xff09;\u5207\u6362\u72b6\u6001\u680f\u56fe\u6807\u989c\u8272<\/h6>\n<p><span class=\"token keyword\">val<\/span> window <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span>view<span class=\"token punctuation\">.<\/span>context <span class=\"token keyword\">as<\/span> Activity<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>window<br \/>\nWindowCompat<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInsetsController<\/span><span class=\"token punctuation\">(<\/span>window<span class=\"token punctuation\">,<\/span> view<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>isAppearanceLightStatusBars <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">!<\/span>darkTheme<\/p>\n<li>\n<p>\u901a\u8fc7 view.context \u5f3a\u5236\u8f6c\u4e3a Activity&#xff0c;\u62ff\u5230\u5f53\u524d\u7a97\u53e3\u5bf9\u8c61<\/p>\n<\/li>\n<li>\n<p>\u901a\u8fc7 WindowCompat.getInsetsController \u65b9\u6cd5\u83b7\u53d6 AndroidX \u517c\u5bb9\u5e93\u63d0\u4f9b\u7684\u63a7\u5236\u5668&#xff0c;\u7528\u4e8e\u7ba1\u7406\u72b6\u6001\u680f\u548c\u5bfc\u822a\u680f\u7684\u663e\u793a<\/p>\n<\/li>\n<li>\n<p>isAppearanceLightStatusBars \u5c5e\u6027&#xff0c;true \u4e3a\u6d45\u8272\u72b6\u6001\u680f&#xff08;\u56fe\u6807\u4e3a\u9ed1\u8272&#xff09;&#xff0c;false \u4e3a\u6df1\u8272\u72b6\u6001\u680f&#xff08;\u56fe\u6807\u4e3a\u767d\u8272&#xff09;<\/p>\n<\/li>\n<li>\n<p>!darkTheme \u8868\u793a&#xff0c;\u5f53\u4e3b\u9898\u4e3a\u6d45\u8272\u65f6&#xff0c;\u4f7f\u7528\u9ed1\u8272\u56fe\u6807&#xff1b;\u5f53\u4e3b\u9898\u4e3a\u6df1\u8272\u65f6&#xff0c;\u4f7f\u7528\u767d\u8272\u56fe\u6807<\/p>\n<\/li>\n<h5>2\u3001\u5207\u6362\u72b6\u6001\u680f\u989c\u8272<\/h5>\n<p><span class=\"token keyword\">val<\/span> view <span class=\"token operator\">&#061;<\/span> LocalView<span class=\"token punctuation\">.<\/span>current<br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>view<span class=\"token punctuation\">.<\/span>isInEditMode<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    SideEffect <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">val<\/span> window <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span>view<span class=\"token punctuation\">.<\/span>context <span class=\"token keyword\">as<\/span> Activity<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>window<br \/>\n        window<span class=\"token punctuation\">.<\/span>statusBarColor <span class=\"token operator\">&#061;<\/span> colorScheme<span class=\"token punctuation\">.<\/span>primary<span class=\"token punctuation\">.<\/span><span class=\"token function\">toArgb<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        WindowCompat<br \/>\n            <span class=\"token punctuation\">.<\/span><span class=\"token function\">getInsetsController<\/span><span class=\"token punctuation\">(<\/span>window<span class=\"token punctuation\">,<\/span> view<span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token punctuation\">.<\/span>isAppearanceLightStatusBars <span class=\"token operator\">&#061;<\/span> useDarkTheme<br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h6>&#xff08;1&#xff09;\u83b7\u53d6\u5f53\u524d\u89c6\u56fe<\/h6>\n<p><span class=\"token keyword\">val<\/span> view <span class=\"token operator\">&#061;<\/span> LocalView<span class=\"token punctuation\">.<\/span>current<\/p>\n<ul>\n<li>LocalView.current \u83b7\u53d6\u5f53\u524d Compose \u754c\u9762\u4f9d\u9644\u7684 View \u5bf9\u8c61&#xff0c;\u5373 Android \u4f20\u7edf\u7684 View \u7cfb\u7edf\u5b9e\u4f8b<\/li>\n<\/ul>\n<h6>&#xff08;2&#xff09;\u907f\u514d\u9884\u89c8\u5d29\u6e83<\/h6>\n<p><span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>view<span class=\"token punctuation\">.<\/span>isInEditMode<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token operator\">..<\/span><span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">}<\/span><\/p>\n<li>\n<p>isInEditMode \u7528\u4e8e\u5224\u65ad\u5f53\u524d\u662f\u5426\u5904\u4e8e Android Studio \u7684\u9884\u89c8\u6a21\u5f0f<\/p>\n<\/li>\n<li>\n<p>\u5728\u9884\u89c8\u6a21\u5f0f\u4e0b\u6ca1\u6709\u771f\u5b9e\u7684 Activity \u548c Window&#xff0c;\u5982\u679c\u6267\u884c\u4e0b\u9762\u7684\u4ee3\u7801\u4f1a\u629b\u51fa\u5f02\u5e38<\/p>\n<\/li>\n<li>\n<p>\u8fd9\u4e2a\u5224\u65ad\u786e\u4fdd\u903b\u8f91\u53ea\u5728\u771f\u673a\u6216\u6a21\u62df\u5668\u8fd0\u884c\u65f6\u751f\u6548<\/p>\n<\/li>\n<h6>&#xff08;3&#xff09;\u526f\u4f5c\u7528\u6267\u884c<\/h6>\n<p>SideEffect <span class=\"token punctuation\">{<\/span> <span class=\"token operator\">..<\/span><span class=\"token punctuation\">.<\/span> <span class=\"token punctuation\">)<\/span><\/p>\n<li>\n<p>SideEffect \u662f Compose \u4e2d\u7684\u4e00\u4e2a\u526f\u4f5c\u7528 API<\/p>\n<\/li>\n<li>\n<p>SideEffect \u4fdd\u8bc1\u91cc\u9762\u7684\u4ee3\u7801\u6bcf\u6b21\u91cd\u7ec4\u5b8c\u6210\u540e\u90fd\u4f1a\u6267\u884c<\/p>\n<\/li>\n<li>\n<p>\u4fee\u6539\u72b6\u6001\u680f\u5c5e\u4e8e\u5916\u90e8\u547d\u4ee4\u5f0f\u64cd\u4f5c&#xff0c;\u8981\u786e\u4fdd\u5728 UI \u7ed8\u5236\u5230\u5c4f\u5e55\u4e0a\u4e4b\u540e\u7acb\u5373\u540c\u6b65\u6267\u884c&#xff0c;\u907f\u514d\u754c\u9762\u95ea\u70c1<\/p>\n<\/li>\n<h6>&#xff08;4&#xff09;\u5207\u6362\u72b6\u6001\u680f\u989c\u8272<\/h6>\n<p><span class=\"token keyword\">val<\/span> window <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span>view<span class=\"token punctuation\">.<\/span>context <span class=\"token keyword\">as<\/span> Activity<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>window<br \/>\nwindow<span class=\"token punctuation\">.<\/span>statusBarColor <span class=\"token operator\">&#061;<\/span> colorScheme<span class=\"token punctuation\">.<\/span>primary<span 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