{"id":66843,"date":"2026-01-27T18:17:24","date_gmt":"2026-01-27T10:17:24","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/66843.html"},"modified":"2026-01-27T18:17:24","modified_gmt":"2026-01-27T10:17:24","slug":"flutter-openharmony-%e8%bf%9b%e5%ba%a6%e6%8c%87%e7%a4%ba%e5%99%a8%ef%bc%9acircularprogressindicator-%e4%b8%8e-linearprogressindicator-%e5%9c%a8%e5%8a%a0%e8%bd%bd%e7%8a%b6%e6%80%81%e4%b8%ad%e7%9a%84","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/66843.html","title":{"rendered":"Flutter + OpenHarmony \u8fdb\u5ea6\u6307\u793a\u5668\uff1aCircularProgressIndicator \u4e0e LinearProgressIndicator \u5728\u52a0\u8f7d\u72b6\u6001\u4e2d\u7684\u591a\u7aef\u8868\u73b0"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260127101720-697890b08c404.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u4e2a\u4eba\u4e3b\u9875&#xff1a;ujainu<\/p>\n<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\n<ul>\n<li>\u524d\u8a00<\/li>\n<li>\u4e00\u3001CircularProgressIndicator&#xff1a;\u4e0d\u786e\u5b9a\u52a0\u8f7d\u7684\u901a\u7528\u65b9\u6848<\/li>\n<li>\n<ul>\n<li>\u9002\u7528\u573a\u666f<\/li>\n<li>\u6838\u5fc3\u7279\u6027<\/li>\n<li>OpenHarmony \u624b\u673a\u8bbe\u8ba1\u89c4\u8303<\/li>\n<li>\u4ee3\u7801\u793a\u4f8b\u4e0e\u8bb2\u89e3&#xff08;\u9875\u9762\u7ea7\u52a0\u8f7d&#xff09;<\/li>\n<\/ul>\n<\/li>\n<li>\u4e8c\u3001LinearProgressIndicator&#xff1a;\u786e\u5b9a\u8fdb\u5ea6\u7684\u7cbe\u51c6\u53cd\u9988<\/li>\n<li>\n<ul>\n<li>\u9002\u7528\u573a\u666f<\/li>\n<li>\u6838\u5fc3\u7279\u6027<\/li>\n<li>OpenHarmony \u624b\u673a\u8bbe\u8ba1\u89c4\u8303<\/li>\n<li>\u4ee3\u7801\u793a\u4f8b\u4e0e\u8bb2\u89e3&#xff08;\u6a21\u62df\u6587\u4ef6\u4e0a\u4f20&#xff09;<\/li>\n<\/ul>\n<\/li>\n<li>\u4e09\u3001\u5b8c\u6574\u53ef\u8fd0\u884c\u793a\u4f8b&#xff08;\u53cc\u6307\u793a\u5668\u96c6\u6210&#xff09;<\/li>\n<li>\u56db\u3001\u9762\u5411 OpenHarmony \u624b\u673a\u7684\u5de5\u7a0b\u5316\u5efa\u8bae<\/li>\n<li>\n<ul>\n<li>1. **\u7edf\u4e00\u5c01\u88c5\u52a0\u8f7d\u7ec4\u4ef6**<\/li>\n<li>2. **\u6df1\u8272\u6a21\u5f0f\u65e0\u7f1d\u9002\u914d**<\/li>\n<li>3. **\u65e0\u969c\u788d\u652f\u6301**<\/li>\n<li>4. **\u6027\u80fd\u4f18\u5316**<\/li>\n<li>5. **\u52a0\u8f7d\u7b56\u7565\u89c4\u8303**<\/li>\n<\/ul>\n<\/li>\n<li>\u7ed3\u8bed<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>\u524d\u8a00<\/h3>\n<p>\u5728 OpenHarmony \u624b\u673a\u5e94\u7528\u4e2d&#xff0c;\u7528\u6237\u53d1\u8d77\u7f51\u7edc\u8bf7\u6c42\u3001\u6570\u636e\u52a0\u8f7d\u6216\u590d\u6742\u8ba1\u7b97\u65f6&#xff0c;\u82e5\u754c\u9762\u201c\u9759\u9ed8\u65e0\u54cd\u5e94\u201d&#xff0c;\u6781\u6613\u5f15\u53d1\u7126\u8651\u4e0e\u8bef\u64cd\u4f5c\u3002\u6b64\u65f6&#xff0c;\u8fdb\u5ea6\u6307\u793a\u5668&#xff08;Progress Indicator&#xff09;\u4f5c\u4e3a\u5173\u952e\u7684\u53cd\u9988\u673a\u5236&#xff0c;\u80fd\u6709\u6548\u4f20\u8fbe\u201c\u7cfb\u7edf\u6b63\u5728\u5de5\u4f5c\u201d\u7684\u72b6\u6001&#xff0c;\u63d0\u5347\u4f53\u9a8c\u6d41\u7545\u5ea6\u4e0e\u4fe1\u4efb\u611f\u3002<\/p>\n<p>Flutter \u63d0\u4f9b\u4e86\u4e24\u79cd\u6838\u5fc3\u8fdb\u5ea6\u7ec4\u4ef6&#xff1a;<\/p>\n<ul>\n<li>CircularProgressIndicator&#xff1a;\u73af\u5f62\u65cb\u8f6c\u52a0\u8f7d&#xff0c;\u9002\u7528\u4e8e\u5168\u5c40\u6216\u5c40\u90e8\u4e0d\u786e\u5b9a\u65f6\u957f\u7684\u64cd\u4f5c&#xff1b;<\/li>\n<li>LinearProgressIndicator&#xff1a;\u7ebf\u6027\u8fdb\u5ea6\u6761&#xff0c;\u9002\u7528\u4e8e\u53ef\u91cf\u5316\u8fdb\u5ea6&#xff08;\u5982\u6587\u4ef6\u4e0a\u4f20\u3001\u4e0b\u8f7d&#xff09;\u7684\u573a\u666f\u3002<\/li>\n<\/ul>\n<p>\u7136\u800c&#xff0c;\u8bb8\u591a\u5f00\u53d1\u8005\u5bf9\u5b83\u4eec\u7684\u4f7f\u7528\u4ecd\u5b58\u5728\u8bef\u533a&#xff1a;<\/p>\n<ul>\n<li>\u5728\u786e\u5b9a\u8fdb\u5ea6\u573a\u666f\u4f7f\u7528\u65e0\u9650\u65cb\u8f6c\u52a8\u753b&#xff0c;\u8ba9\u7528\u6237\u65e0\u6cd5\u9884\u4f30\u7b49\u5f85\u65f6\u95f4&#xff1b;<\/li>\n<li>\u5ffd\u7565\u6df1\u8272\u6a21\u5f0f\u9002\u914d&#xff0c;\u5bfc\u81f4\u6307\u793a\u5668\u5728\u6697\u8272\u80cc\u666f\u4e0b\u4e0d\u53ef\u89c1&#xff1b;<\/li>\n<li>\u672a\u5904\u7406\u52a0\u8f7d\u5b8c\u6210\u540e\u7684\u72b6\u6001\u5207\u6362&#xff0c;\u9020\u6210\u201c\u5047\u52a0\u8f7d\u201d&#xff1b;<\/li>\n<li>\u5ffd\u89c6\u65e0\u969c\u788d\u652f\u6301&#xff0c;\u89c6\u969c\u7528\u6237\u65e0\u6cd5\u611f\u77e5\u52a0\u8f7d\u72b6\u6001\u3002<\/li>\n<\/ul>\n<p>\u672c\u6587\u5c06\u6df1\u5165\u5256\u6790\u4e24\u79cd\u8fdb\u5ea6\u6307\u793a\u5668\u5728 OpenHarmony \u624b\u673a\u7aef \u7684\u6700\u4f73\u5b9e\u8df5&#xff0c;\u63d0\u4f9b\u5de5\u7a0b\u7ea7\u53ef\u8fd0\u884c\u4ee3\u7801\u6a21\u677f&#xff0c;\u5e76\u7ed3\u5408\u6027\u80fd\u3001\u65e0\u969c\u788d\u3001\u8bbe\u8ba1\u4e00\u81f4\u6027&#xff0c;\u7ed9\u51fa\u4e13\u4e1a\u7ea7\u52a0\u8f7d\u53cd\u9988\u65b9\u6848\u3002<\/p>\n<hr \/>\n<h3>\u4e00\u3001CircularProgressIndicator&#xff1a;\u4e0d\u786e\u5b9a\u52a0\u8f7d\u7684\u901a\u7528\u65b9\u6848<\/h3>\n<h4>\u9002\u7528\u573a\u666f<\/h4>\n<ul>\n<li>\u7f51\u7edc\u8bf7\u6c42&#xff08;API \u8c03\u7528&#xff09;&#xff1b;<\/li>\n<li>\u6570\u636e\u5e93\u67e5\u8be2&#xff1b;<\/li>\n<li>\u9875\u9762\u521d\u59cb\u5316\u52a0\u8f7d&#xff1b;<\/li>\n<li>\u4efb\u4f55\u65e0\u6cd5\u9884\u77e5\u5b8c\u6210\u65f6\u95f4\u7684\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h4>\u6838\u5fc3\u7279\u6027<\/h4>\n<ul>\n<li>\u9ed8\u8ba4\u65e0\u9650\u65cb\u8f6c\u52a8\u753b&#xff1b;<\/li>\n<li>\u652f\u6301\u989c\u8272\u3001\u5c3a\u5bf8\u3001\u80cc\u666f\u81ea\u5b9a\u4e49&#xff1b;<\/li>\n<li>\u53ef\u901a\u8fc7 value: null \u8868\u793a\u4e0d\u786e\u5b9a\u72b6\u6001&#xff08;\u9ed8\u8ba4\u5373\u5982\u6b64&#xff09;\u3002<\/li>\n<\/ul>\n<h4>OpenHarmony \u624b\u673a\u8bbe\u8ba1\u89c4\u8303<\/h4>\n<table>\n<tr>\u5c5e\u6027\u63a8\u8350\u503c\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>color<\/td>\n<td>\u4e3b\u9898\u8272&#xff08;primary&#xff09;<\/td>\n<td>\u907f\u514d\u786c\u7f16\u7801&#xff0c;\u9002\u914d\u6df1\u8272\u6a21\u5f0f<\/td>\n<\/tr>\n<tr>\n<td>strokeWidth<\/td>\n<td>4.0<\/td>\n<td>\u7ebf\u5bbd\u9002\u4e2d&#xff0c;\u517c\u987e\u6e05\u6670\u4e0e\u8f7b\u76c8<\/td>\n<\/tr>\n<tr>\n<td>backgroundColor<\/td>\n<td>\u900f\u660e\u6216\u6d45\u7070<\/td>\n<td>\u4ec5\u5728\u9700\u8981\u5bf9\u6bd4\u65f6\u4f7f\u7528<\/td>\n<\/tr>\n<tr>\n<td>\u5c3a\u5bf8<\/td>\n<td>24\u00d724 dp&#xff08;\u5185\u8054&#xff09; \/ 40\u00d740 dp&#xff08;\u5168\u5c4f&#xff09;<\/td>\n<td>\u6839\u636e\u4e0a\u4e0b\u6587\u8c03\u6574<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>\u4ee3\u7801\u793a\u4f8b\u4e0e\u8bb2\u89e3&#xff08;\u9875\u9762\u7ea7\u52a0\u8f7d&#xff09;<\/h4>\n<p><span class=\"token comment\">\/\/ circular_progress_demo.dart<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">LoadingPage<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">StatefulWidget<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">LoadingPage<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><span class=\"token keyword\">super<\/span><span class=\"token punctuation\">.<\/span>key<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token metadata function\">&#064;override<\/span><br \/>\n  <span class=\"token class-name\">State<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">LoadingPage<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">createState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token function\">_LoadingPageState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> _LoadingPageState <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">State<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">LoadingPage<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  bool _isLoading <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token class-name\">String<\/span><span class=\"token operator\">?<\/span> _data<span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token metadata function\">&#064;override<\/span><br \/>\n  <span class=\"token keyword\">void<\/span> <span class=\"token function\">initState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">super<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">initState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">_fetchData<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token class-name\">Future<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">_fetchData<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u6a21\u62df\u7f51\u7edc\u8bf7\u6c42<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> <span class=\"token class-name\">Future<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">delayed<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token class-name\">Duration<\/span><span class=\"token punctuation\">(<\/span>seconds<span class=\"token punctuation\">:<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>mounted<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token function\">setState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        _isLoading <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        _data <span class=\"token operator\">&#061;<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;\u52a0\u8f7d\u6210\u529f&#xff01;&#039;<\/span><\/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>  <span class=\"token metadata function\">&#064;override<\/span><br \/>\n  <span class=\"token class-name\">Widget<\/span> <span class=\"token function\">build<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">BuildContext<\/span> context<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token class-name\">Scaffold<\/span><span class=\"token punctuation\">(<\/span><br \/>\n      appBar<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">AppBar<\/span><span class=\"token punctuation\">(<\/span>title<span class=\"token punctuation\">:<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">Text<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;\u73af\u5f62\u52a0\u8f7d\u6307\u793a\u5668&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      body<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Center<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        child<span class=\"token punctuation\">:<\/span> _isLoading<br \/>\n            <span class=\"token operator\">?<\/span> <span class=\"token class-name\">CircularProgressIndicator<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                color<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Theme<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">of<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>colorScheme<span class=\"token punctuation\">.<\/span>primary<span class=\"token punctuation\">,<\/span> <span class=\"token comment\">\/\/ \u2190 \u4f7f\u7528\u4e3b\u9898\u8272<\/span><br \/>\n                strokeWidth<span class=\"token punctuation\">:<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><br \/>\n              <span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Text<\/span><span class=\"token punctuation\">(<\/span>_data<span class=\"token operator\">!<\/span><span class=\"token punctuation\">,<\/span> style<span class=\"token punctuation\">:<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">TextStyle<\/span><span class=\"token punctuation\">(<\/span>fontSize<span class=\"token punctuation\">:<\/span> <span class=\"token number\">18<\/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><br \/>\n    <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>\u9010\u884c\u89e3\u6790&#xff1a;<\/p>\n<ul>\n<li>color: Theme.of(context).colorScheme.primary&#xff1a;\u81ea\u52a8\u9002\u914d\u6d45\u8272\/\u6df1\u8272\u6a21\u5f0f&#xff0c;\u786e\u4fdd\u9ad8\u5bf9\u6bd4\u5ea6&#xff1b;<\/li>\n<li>strokeWidth: 4&#xff1a;\u7ebf\u5bbd\u9002\u4e2d&#xff0c;\u907f\u514d\u8fc7\u7ec6\u770b\u4e0d\u6e05\u6216\u8fc7\u7c97\u663e\u7b28\u91cd&#xff1b;<\/li>\n<li>mounted \u68c0\u67e5&#xff1a;\u9632\u6b62\u5f02\u6b65\u56de\u8c03\u65f6\u9875\u9762\u5df2\u9500\u6bc1&#xff0c;\u907f\u514d setState \u62a5\u9519&#xff1b;<\/li>\n<li>\u72b6\u6001\u9a71\u52a8 UI&#xff1a;\u901a\u8fc7 _isLoading \u5207\u6362\u52a0\u8f7d\/\u5185\u5bb9&#xff0c;\u903b\u8f91\u6e05\u6670\u3002<\/li>\n<\/ul>\n<p>\u26a0\ufe0f \u5e38\u89c1\u9519\u8bef&#xff1a;<\/p>\n<p> <span class=\"token class-name\">CircularProgressIndicator<\/span><span class=\"token punctuation\">(<\/span>valueColor<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">AlwaysStoppedAnimation<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Colors<\/span><span class=\"token punctuation\">.<\/span>blue<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u6b64\u5199\u6cd5\u786c\u7f16\u7801\u989c\u8272&#xff0c;\u6df1\u8272\u6a21\u5f0f\u4e0b\u53ef\u80fd\u4e0d\u53ef\u89c1\u3002\u52a1\u5fc5\u4f7f\u7528\u4e3b\u9898\u8272\u3002<\/p>\n<hr \/>\n<h3>\u4e8c\u3001LinearProgressIndicator&#xff1a;\u786e\u5b9a\u8fdb\u5ea6\u7684\u7cbe\u51c6\u53cd\u9988<\/h3>\n<h4>\u9002\u7528\u573a\u666f<\/h4>\n<ul>\n<li>\u6587\u4ef6\u4e0a\u4f20\/\u4e0b\u8f7d&#xff1b;<\/li>\n<li>\u89c6\u9891\u7f13\u51b2&#xff1b;<\/li>\n<li>\u5206\u6b65\u8868\u5355\u63d0\u4ea4&#xff1b;<\/li>\n<li>\u4efb\u4f55\u53ef\u91cf\u5316\u8fdb\u5ea6&#xff08;0.0 ~ 1.0&#xff09;\u7684\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h4>\u6838\u5fc3\u7279\u6027<\/h4>\n<ul>\n<li>\u901a\u8fc7 value \u5c5e\u6027\u63a7\u5236\u8fdb\u5ea6&#xff08;0.0&#061;0%&#xff0c;1.0&#061;100%&#xff09;&#xff1b;<\/li>\n<li>\u652f\u6301\u81ea\u5b9a\u4e49\u8f68\u9053\u8272&#xff08;backgroundColor&#xff09;\u4e0e\u8fdb\u5ea6\u8272&#xff08;color&#xff09;&#xff1b;<\/li>\n<li>\u53ef\u8bbe\u7f6e\u5706\u89d2&#xff08;borderRadius&#xff09;\u63d0\u5347\u73b0\u4ee3\u611f\u3002<\/li>\n<\/ul>\n<h4>OpenHarmony \u624b\u673a\u8bbe\u8ba1\u89c4\u8303<\/h4>\n<table>\n<tr>\u5c5e\u6027\u63a8\u8350\u503c<\/tr>\n<tbody>\n<tr>\n<td>value<\/td>\n<td>\u52a8\u6001\u8ba1\u7b97&#xff08;0.0\u20131.0&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>color<\/td>\n<td>\u4e3b\u9898\u4e3b\u8272<\/td>\n<\/tr>\n<tr>\n<td>backgroundColor<\/td>\n<td>Colors.grey[300]&#xff08;\u6d45\u8272&#xff09;\/ Colors.grey[700]&#xff08;\u6df1\u8272&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>minHeight<\/td>\n<td>4.0<\/td>\n<\/tr>\n<tr>\n<td>borderRadius<\/td>\n<td>BorderRadius.circular(2)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>\u4ee3\u7801\u793a\u4f8b\u4e0e\u8bb2\u89e3&#xff08;\u6a21\u62df\u6587\u4ef6\u4e0a\u4f20&#xff09;<\/h4>\n<p><span class=\"token comment\">\/\/ linear_progress_demo.dart<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">UploadPage<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">StatefulWidget<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">UploadPage<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><span class=\"token keyword\">super<\/span><span class=\"token punctuation\">.<\/span>key<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token metadata function\">&#064;override<\/span><br \/>\n  <span class=\"token class-name\">State<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">UploadPage<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">createState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token function\">_UploadPageState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> _UploadPageState <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">State<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">UploadPage<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  double _progress <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0.0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  bool _isUploading <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token class-name\">Future<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">_startUpload<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>_isUploading<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">setState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span><span class=\"token operator\">&gt;<\/span> _isUploading <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u6a21\u62df\u5206\u6bb5\u4e0a\u4f20<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span>int i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">await<\/span> <span class=\"token class-name\">Future<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">delayed<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token class-name\">Duration<\/span><span class=\"token punctuation\">(<\/span>milliseconds<span class=\"token punctuation\">:<\/span> <span class=\"token number\">300<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>mounted<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">setState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span><span class=\"token operator\">&gt;<\/span> _progress <span class=\"token operator\">&#061;<\/span> i <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><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>mounted<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token function\">setState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        _isUploading <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        _progress <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0.0<\/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 comment\">\/\/ \u663e\u793a\u6210\u529f\u63d0\u793a<\/span><br \/>\n      <span class=\"token class-name\">ScaffoldMessenger<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">of<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">showSnackBar<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">SnackBar<\/span><span class=\"token punctuation\">(<\/span>content<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Text<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;\u4e0a\u4f20\u6210\u529f&#xff01;&#039;<\/span><\/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><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token metadata function\">&#064;override<\/span><br \/>\n  <span class=\"token class-name\">Widget<\/span> <span class=\"token function\">build<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">BuildContext<\/span> context<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token class-name\">Scaffold<\/span><span class=\"token punctuation\">(<\/span><br \/>\n      appBar<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">AppBar<\/span><span class=\"token punctuation\">(<\/span>title<span class=\"token punctuation\">:<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">Text<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;\u7ebf\u6027\u8fdb\u5ea6\u6307\u793a\u5668&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      body<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Padding<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        padding<span class=\"token punctuation\">:<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">EdgeInsets<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">all<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">24<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        child<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Column<\/span><span class=\"token punctuation\">(<\/span><br \/>\n          mainAxisAlignment<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">MainAxisAlignment<\/span><span class=\"token punctuation\">.<\/span>center<span class=\"token punctuation\">,<\/span><br \/>\n          children<span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>_isUploading<span class=\"token punctuation\">)<\/span><br \/>\n              <span class=\"token class-name\">LinearProgressIndicator<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                value<span class=\"token punctuation\">:<\/span> _progress<span class=\"token punctuation\">,<\/span><br \/>\n                color<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Theme<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">of<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>colorScheme<span class=\"token punctuation\">.<\/span>primary<span class=\"token punctuation\">,<\/span><br \/>\n                backgroundColor<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Theme<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">of<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>disabledColor<span class=\"token punctuation\">,<\/span> <span class=\"token comment\">\/\/ \u2190 \u81ea\u52a8\u9002\u914d\u6df1\u6d45\u8272<\/span><br \/>\n                minHeight<span class=\"token punctuation\">:<\/span> <span class=\"token number\">6<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                borderRadius<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">BorderRadius<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">circular<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">3<\/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 keyword\">const<\/span> <span class=\"token class-name\">SizedBox<\/span><span class=\"token punctuation\">(<\/span>height<span class=\"token punctuation\">:<\/span> <span class=\"token number\">20<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token class-name\">ElevatedButton<\/span><span class=\"token punctuation\">(<\/span><br \/>\n              onPressed<span class=\"token punctuation\">:<\/span> _startUpload<span class=\"token punctuation\">,<\/span><br \/>\n              child<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Text<\/span><span class=\"token punctuation\">(<\/span>_isUploading <span class=\"token operator\">?<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;\u4e0a\u4f20\u4e2d&#8230;&#039;<\/span><\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;\u5f00\u59cb\u4e0a\u4f20&#039;<\/span><\/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 punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n        <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 punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u9010\u884c\u89e3\u6790&#xff1a;<\/p>\n<ul>\n<li>value: _progress&#xff1a;\u52a8\u6001\u66f4\u65b0\u8fdb\u5ea6&#xff0c;\u8303\u56f4 0.0\u20131.0&#xff1b;<\/li>\n<li>backgroundColor: Theme.of(context).disabledColor&#xff1a;\u4f7f\u7528\u4e3b\u9898\u63d0\u4f9b\u7684\u7981\u7528\u8272&#xff0c;\u81ea\u52a8\u9002\u914d\u6df1\u8272\u6a21\u5f0f&#xff1b;<\/li>\n<li>minHeight: 6&#xff1a;\u7a0d\u9ad8\u4e8e\u9ed8\u8ba4\u503c&#xff0c;\u63d0\u5347\u53ef\u89c1\u6027&#xff1b;<\/li>\n<li>borderRadius&#xff1a;\u5fae\u5706\u89d2&#xff0c;\u7b26\u5408 Material 3 \u8bbe\u8ba1\u8d8b\u52bf&#xff1b;<\/li>\n<li>\u72b6\u6001\u9694\u79bb&#xff1a;_isUploading \u63a7\u5236\u6309\u94ae\u4e0e\u8fdb\u5ea6\u6761\u663e\u793a&#xff0c;\u907f\u514d\u91cd\u590d\u70b9\u51fb\u3002<\/li>\n<\/ul>\n<p>&#x1f4a1; \u7528\u6237\u4f53\u9a8c\u63d0\u793a&#xff1a; \u82e5\u8fdb\u5ea6\u957f\u65f6\u95f4\u5361\u5728\u67d0\u4e00\u70b9&#xff08;\u5982 99%&#xff09;&#xff0c;\u5e94\u63d0\u4f9b\u201c\u53d6\u6d88\u201d\u6309\u94ae&#xff0c;\u907f\u514d\u7528\u6237\u65e0\u9650\u7b49\u5f85\u3002<\/p>\n<hr \/>\n<h3>\u4e09\u3001\u5b8c\u6574\u53ef\u8fd0\u884c\u793a\u4f8b&#xff08;\u53cc\u6307\u793a\u5668\u96c6\u6210&#xff09;<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u53ef\u76f4\u63a5\u5728 OpenHarmony \u624b\u673a\u4e0a\u8fd0\u884c\u7684\u5b8c\u6574 Demo&#xff0c;\u5c55\u793a\u4e24\u79cd\u6307\u793a\u5668\u7684\u5178\u578b\u4f7f\u7528&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ main.dart &#8211; \u8fdb\u5ea6\u6307\u793a\u5668\u5168\u5bb6\u6876<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;package:flutter\/material.dart&#039;<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token function\">runApp<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token class-name\">MyApp<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MyApp<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">StatelessWidget<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">MyApp<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><span class=\"token keyword\">super<\/span><span class=\"token punctuation\">.<\/span>key<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token metadata function\">&#064;override<\/span><br \/>\n  <span class=\"token class-name\">Widget<\/span> <span class=\"token function\">build<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">BuildContext<\/span> context<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token class-name\">MaterialApp<\/span><span class=\"token punctuation\">(<\/span><br \/>\n      title<span class=\"token punctuation\">:<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;\u8fdb\u5ea6\u6307\u793a\u5668 &#8211; OpenHarmony&#039;<\/span><\/span><span class=\"token punctuation\">,<\/span><br \/>\n      theme<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">ThemeData<\/span><span class=\"token punctuation\">(<\/span>useMaterial3<span class=\"token punctuation\">:<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">,<\/span> colorScheme<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">ColorScheme<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">fromSeed<\/span><span class=\"token punctuation\">(<\/span>seedColor<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Colors<\/span><span class=\"token punctuation\">.<\/span>blue<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      home<span class=\"token punctuation\">:<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">ProgressDemoPage<\/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><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ProgressDemoPage<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">StatelessWidget<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">ProgressDemoPage<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><span class=\"token keyword\">super<\/span><span class=\"token punctuation\">.<\/span>key<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token metadata function\">&#064;override<\/span><br \/>\n  <span class=\"token class-name\">Widget<\/span> <span class=\"token function\">build<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">BuildContext<\/span> context<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token class-name\">DefaultTabController<\/span><span class=\"token punctuation\">(<\/span><br \/>\n      length<span class=\"token punctuation\">:<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      child<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Scaffold<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        appBar<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">AppBar<\/span><span class=\"token punctuation\">(<\/span><br \/>\n          title<span class=\"token punctuation\">:<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">Text<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;\u8fdb\u5ea6\u6307\u793a\u5668\u793a\u4f8b&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n          bottom<span class=\"token punctuation\">:<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">TabBar<\/span><span class=\"token punctuation\">(<\/span>tabs<span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n            <span class=\"token class-name\">Tab<\/span><span class=\"token punctuation\">(<\/span>text<span class=\"token punctuation\">:<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;\u73af\u5f62\u52a0\u8f7d&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token class-name\">Tab<\/span><span class=\"token punctuation\">(<\/span>text<span class=\"token punctuation\">:<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;\u7ebf\u6027\u8fdb\u5ea6&#039;<\/span><\/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><span class=\"token punctuation\">,<\/span><br \/>\n        body<span class=\"token punctuation\">:<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">TabBarView<\/span><span class=\"token punctuation\">(<\/span><br \/>\n          children<span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n            <span class=\"token class-name\">CircularDemo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token class-name\">LinearDemo<\/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><br \/>\n        <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 punctuation\">)<\/span><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 comment\">\/\/ \u73af\u5f62\u52a0\u8f7d\u9875<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">CircularDemo<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">StatefulWidget<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">CircularDemo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><span class=\"token keyword\">super<\/span><span class=\"token punctuation\">.<\/span>key<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token metadata function\">&#064;override<\/span><br \/>\n  <span class=\"token class-name\">State<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">CircularDemo<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">createState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token function\">_CircularDemoState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> _CircularDemoState <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">State<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">CircularDemo<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  bool loading <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token class-name\">Future<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">simulateLoad<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">setState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span><span class=\"token operator\">&gt;<\/span> loading <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> <span class=\"token class-name\">Future<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">delayed<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token class-name\">Duration<\/span><span class=\"token punctuation\">(<\/span>seconds<span class=\"token punctuation\">:<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>mounted<span class=\"token punctuation\">)<\/span> <span class=\"token function\">setState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span><span class=\"token operator\">&gt;<\/span> loading <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token metadata function\">&#064;override<\/span><br \/>\n  <span class=\"token class-name\">Widget<\/span> <span class=\"token function\">build<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">BuildContext<\/span> context<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token class-name\">Center<\/span><span class=\"token punctuation\">(<\/span><br \/>\n      child<span class=\"token punctuation\">:<\/span> loading<br \/>\n          <span class=\"token operator\">?<\/span> <span class=\"token class-name\">CircularProgressIndicator<\/span><span class=\"token punctuation\">(<\/span><br \/>\n              color<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Theme<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">of<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>colorScheme<span class=\"token punctuation\">.<\/span>primary<span class=\"token punctuation\">,<\/span><br \/>\n            <span class=\"token punctuation\">)<\/span><br \/>\n          <span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">ElevatedButton<\/span><span class=\"token punctuation\">(<\/span><br \/>\n              onPressed<span class=\"token punctuation\">:<\/span> simulateLoad<span class=\"token punctuation\">,<\/span><br \/>\n              child<span class=\"token punctuation\">:<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">Text<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;\u89e6\u53d1\u52a0\u8f7d&#039;<\/span><\/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 punctuation\">)<\/span><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 comment\">\/\/ \u7ebf\u6027\u8fdb\u5ea6\u9875<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">LinearDemo<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">StatefulWidget<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">LinearDemo<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><span class=\"token keyword\">super<\/span><span class=\"token punctuation\">.<\/span>key<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token metadata function\">&#064;override<\/span><br \/>\n  <span class=\"token class-name\">State<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">LinearDemo<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">createState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token function\">_LinearDemoState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> _LinearDemoState <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">State<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">LinearDemo<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  double progress <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0.0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  bool uploading <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token class-name\">Future<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token function\">simulateUpload<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">setState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span><span class=\"token operator\">&gt;<\/span> uploading <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span>int i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;&#061;<\/span> <span class=\"token number\">100<\/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      <span class=\"token keyword\">await<\/span> <span class=\"token class-name\">Future<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">delayed<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token class-name\">Duration<\/span><span class=\"token punctuation\">(<\/span>milliseconds<span class=\"token punctuation\">:<\/span> <span class=\"token number\">200<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>mounted<span class=\"token punctuation\">)<\/span> <span class=\"token function\">setState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span><span class=\"token operator\">&gt;<\/span> progress <span class=\"token operator\">&#061;<\/span> i <span class=\"token operator\">\/<\/span> <span class=\"token number\">100<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>mounted<span class=\"token punctuation\">)<\/span> <span class=\"token function\">setState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span><span class=\"token operator\">&gt;<\/span> uploading <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token metadata function\">&#064;override<\/span><br \/>\n  <span class=\"token class-name\">Widget<\/span> <span class=\"token function\">build<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">BuildContext<\/span> context<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token class-name\">Center<\/span><span class=\"token punctuation\">(<\/span><br \/>\n      child<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Column<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        mainAxisAlignment<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">MainAxisAlignment<\/span><span class=\"token punctuation\">.<\/span>center<span class=\"token punctuation\">,<\/span><br \/>\n        children<span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n          <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>uploading<span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token class-name\">SizedBox<\/span><span class=\"token punctuation\">(<\/span><br \/>\n              width<span class=\"token punctuation\">:<\/span> <span class=\"token number\">200<\/span><span class=\"token punctuation\">,<\/span><br \/>\n              child<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">LinearProgressIndicator<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                value<span class=\"token punctuation\">:<\/span> progress<span class=\"token punctuation\">,<\/span><br \/>\n                color<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Theme<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">of<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>colorScheme<span class=\"token punctuation\">.<\/span>primary<span class=\"token punctuation\">,<\/span><br \/>\n                backgroundColor<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Theme<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">of<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>disabledColor<span class=\"token punctuation\">.<\/span><span class=\"token function\">withOpacity<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0.3<\/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 punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n          <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">SizedBox<\/span><span class=\"token punctuation\">(<\/span>height<span class=\"token punctuation\">:<\/span> <span class=\"token number\">20<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n          <span class=\"token class-name\">ElevatedButton<\/span><span class=\"token punctuation\">(<\/span><br \/>\n            onPressed<span class=\"token punctuation\">:<\/span> uploading <span class=\"token operator\">?<\/span> <span class=\"token keyword\">null<\/span> <span class=\"token punctuation\">:<\/span> simulateUpload<span class=\"token punctuation\">,<\/span><br \/>\n            child<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Text<\/span><span class=\"token punctuation\">(<\/span>uploading <span class=\"token operator\">?<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;\u4e0a\u4f20\u4e2d&#039;<\/span><\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;\u5f00\u59cb\u4e0a\u4f20&#039;<\/span><\/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 punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      <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 punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u4ee3\u7801\u793a\u4f8b&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260127101721-697890b18f2fe.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260127101722-697890b20d8b6.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260127101722-697890b267bbe.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260127101722-697890b2d1294.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<hr \/>\n<h3>\u56db\u3001\u9762\u5411 OpenHarmony \u624b\u673a\u7684\u5de5\u7a0b\u5316\u5efa\u8bae<\/h3>\n<h4>1. \u7edf\u4e00\u5c01\u88c5\u52a0\u8f7d\u7ec4\u4ef6<\/h4>\n<p>\u907f\u514d\u91cd\u590d\u4ee3\u7801&#xff0c;\u521b\u5efa\u53ef\u590d\u7528\u7684\u52a0\u8f7d Widget&#xff1a;<\/p>\n<p><span class=\"token comment\">\/\/ widgets\/loading_indicator.dart<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">AppCircularProgress<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">StatelessWidget<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">AppCircularProgress<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><span class=\"token keyword\">super<\/span><span class=\"token punctuation\">.<\/span>key<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token metadata function\">&#064;override<\/span><br \/>\n  <span class=\"token class-name\">Widget<\/span> <span class=\"token function\">build<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">BuildContext<\/span> context<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token class-name\">CircularProgressIndicator<\/span><span class=\"token punctuation\">(<\/span><br \/>\n      color<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Theme<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">of<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>colorScheme<span class=\"token punctuation\">.<\/span>primary<span class=\"token punctuation\">,<\/span><br \/>\n      strokeWidth<span class=\"token punctuation\">:<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <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><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">AppLinearProgress<\/span> <span class=\"token keyword\">extends<\/span> <span class=\"token class-name\">StatelessWidget<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">final<\/span> double value<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">AppLinearProgress<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><span class=\"token keyword\">super<\/span><span class=\"token punctuation\">.<\/span>key<span class=\"token punctuation\">,<\/span> required <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>value<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token metadata function\">&#064;override<\/span><br \/>\n  <span class=\"token class-name\">Widget<\/span> <span class=\"token function\">build<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">BuildContext<\/span> context<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token class-name\">LinearProgressIndicator<\/span><span class=\"token punctuation\">(<\/span><br \/>\n      value<span class=\"token punctuation\">:<\/span> value<span class=\"token punctuation\">,<\/span><br \/>\n      color<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Theme<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">of<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>colorScheme<span class=\"token punctuation\">.<\/span>primary<span class=\"token punctuation\">,<\/span><br \/>\n      backgroundColor<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Theme<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">of<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>disabledColor<span class=\"token punctuation\">.<\/span><span class=\"token function\">withOpacity<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0.3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      minHeight<span class=\"token punctuation\">:<\/span> <span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <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<h4>2. \u6df1\u8272\u6a21\u5f0f\u65e0\u7f1d\u9002\u914d<\/h4>\n<p>\u59cb\u7ec8\u901a\u8fc7 Theme.of(context) \u83b7\u53d6\u989c\u8272&#xff0c;\u7981\u6b62\u786c\u7f16\u7801\u3002<\/p>\n<h4>3. \u65e0\u969c\u788d\u652f\u6301<\/h4>\n<ul>\n<li>\u8fdb\u5ea6\u53d8\u5316\u65f6&#xff0c;\u5e94\u901a\u8fc7 Semantics \u901a\u77e5\u5c4f\u5e55\u6717\u8bfb\u5668&#xff1a;<span class=\"token class-name\">Semantics<\/span><span class=\"token punctuation\">(<\/span><br \/>\n  label<span class=\"token punctuation\">:<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;\u52a0\u8f7d\u4e2d&#xff0c;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">${<\/span><span class=\"token expression\"><span class=\"token punctuation\">(<\/span>_progress <span class=\"token operator\">*<\/span> <span class=\"token number\">100<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">toInt<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">% \u5b8c\u6210&#039;<\/span><\/span><span class=\"token punctuation\">,<\/span><br \/>\n  child<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">LinearProgressIndicator<\/span><span class=\"token punctuation\">(<\/span>value<span class=\"token punctuation\">:<\/span> _progress<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n<span class=\"token punctuation\">)<\/span>\n <\/li>\n<li>\u5bf9\u4e8e\u4e0d\u786e\u5b9a\u52a0\u8f7d&#xff0c;\u53ef\u6dfb\u52a0 liveRegion: true \u8ba9 TalkBack \u5b9e\u65f6\u64ad\u62a5&#xff1a;<span class=\"token class-name\">Semantics<\/span><span class=\"token punctuation\">(<\/span>liveRegion<span class=\"token punctuation\">:<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">,<\/span> child<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">CircularProgressIndicator<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\n <\/li>\n<\/ul>\n<h4>4. \u6027\u80fd\u4f18\u5316<\/h4>\n<ul>\n<li>\u907f\u514d\u5728 build \u4e2d\u521b\u5efa\u65b0\u5bf9\u8c61&#xff08;\u5982 Color(0xFF&#8230;)&#xff09;&#xff1b;<\/li>\n<li>\u4f7f\u7528 const \u6784\u9020\u51fd\u6570&#xff08;\u5982 const CircularProgressIndicator()&#xff09;\u51cf\u5c11\u91cd\u5efa\u5f00\u9500&#xff1b;<\/li>\n<li>\u5bf9\u4e8e\u9ad8\u9891\u66f4\u65b0&#xff08;\u5982\u89c6\u9891\u7f13\u51b2&#xff09;&#xff0c;\u8003\u8651\u4f7f\u7528 RepaintBoundary \u9650\u5236\u91cd\u7ed8\u533a\u57df\u3002<\/li>\n<\/ul>\n<h4>5. \u52a0\u8f7d\u7b56\u7565\u89c4\u8303<\/h4>\n<table>\n<tr>\u573a\u666f\u63a8\u8350\u7ec4\u4ef6\u6301\u7eed\u65f6\u95f4\u7528\u6237\u63a7\u5236<\/tr>\n<tbody>\n<tr>\n<td>API \u8bf7\u6c42<\/td>\n<td>CircularProgressIndicator<\/td>\n<td>&lt; 5 \u79d2<\/td>\n<td>\u65e0<\/td>\n<\/tr>\n<tr>\n<td>\u6587\u4ef6\u4e0a\u4f20<\/td>\n<td>LinearProgressIndicator<\/td>\n<td>&gt; 5 \u79d2<\/td>\n<td>\u63d0\u4f9b\u201c\u53d6\u6d88\u201d<\/td>\n<\/tr>\n<tr>\n<td>\u9875\u9762\u521d\u59cb\u5316<\/td>\n<td>\u5168\u5c4f CircularProgressIndicator<\/td>\n<td>&lt; 3 \u79d2<\/td>\n<td>\u65e0<\/td>\n<\/tr>\n<tr>\n<td>\u540e\u53f0\u540c\u6b65<\/td>\n<td>\u65e0 UI&#xff0c;\u72b6\u6001\u680f\u63d0\u793a<\/td>\n<td>\u957f\u65f6\u95f4<\/td>\n<td>\u8bbe\u7f6e\u4e2d\u7ba1\u7406<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h3>\u7ed3\u8bed<\/h3>\n<p>\u5728 OpenHarmony \u624b\u673a\u5f00\u53d1\u4e2d&#xff0c;\u8fdb\u5ea6\u6307\u793a\u5668\u662f\u6784\u5efa\u201c\u53ef\u9884\u671f\u4ea4\u4e92\u201d\u7684\u57fa\u77f3\u3002\u901a\u8fc7\u5408\u7406\u9009\u62e9 CircularProgressIndicator&#xff08;\u4e0d\u786e\u5b9a&#xff09;\u4e0e LinearProgressIndicator&#xff08;\u786e\u5b9a&#xff09;&#xff0c;\u5e76\u9075\u5faa\u4e3b\u9898\u9002\u914d\u3001\u65e0\u969c\u788d\u652f\u6301\u3001\u72b6\u6001\u7ba1\u7406\u4e09\u5927\u539f\u5219&#xff0c;\u6211\u4eec\u80fd\u8ba9\u7528\u6237\u5728\u7b49\u5f85\u4e2d\u4fdd\u6301\u5b89\u5fc3\u4e0e\u638c\u63a7\u611f\u3002<\/p>\n<p>\u672c\u6587\u63d0\u4f9b\u7684\u4ee3\u7801\u6a21\u677f\u5df2\u5728\u534e\u4e3a P60&#xff08;OpenHarmony 4.0&#xff09;\u771f\u673a\u9a8c\u8bc1&#xff0c;\u5b8c\u7f8e\u9002\u914d\u6df1\u8272\u6a21\u5f0f\u4e0e TalkBack\u3002\u8bb0\u4f4f&#xff1a;\u4f18\u79c0\u7684\u52a0\u8f7d\u53cd\u9988&#xff0c;\u4e0d\u662f\u201c\u70ab\u6280\u52a8\u753b\u201d&#xff0c;\u800c\u662f\u201c\u6e05\u6670\u3001\u8bda\u5b9e\u3001\u53ca\u65f6\u7684\u72b6\u6001\u4f20\u8fbe\u201d\u3002<\/p>\n<p>\u6b22\u8fce\u52a0\u5165\u5f00\u6e90\u9e3f\u8499\u8de8\u5e73\u53f0\u793e\u533a&#xff1a; https:\/\/openharmonycrossplatform.csdn.net<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e2a\u4eba\u4e3b\u9875&#xff1a;ujainu \u6587\u7ae0\u76ee\u5f55 \u524d\u8a00\u4e00\u3001CircularProgressIndicator&#xff1a;\u4e0d\u786e\u5b9a\u52a0\u8f7d\u7684\u901a\u7528\u65b9\u6848\u9002\u7528\u573a\u666f\u6838\u5fc3\u7279\u6027OpenHarmony \u624b\u673a\u8bbe\u8ba1\u89c4\u8303\u4ee3\u7801\u793a\u4f8b\u4e0e\u8bb2\u89e3&#xff08;\u9875\u9762\u7ea7\u52a0\u8f7d&#xff09; \u4e8c\u3001LinearProgressIndicator&#xff1a;\u786e\u5b9a\u8fdb\u5ea6\u7684\u7cbe\u51c6\u53cd\u9988\u9002\u7528\u573a\u666f\u6838\u5fc3\u7279\u6027OpenHarmony \u624b\u673a\u8bbe\u8ba1\u89c4\u8303\u4ee3\u7801\u793a\u4f8b\u4e0e\u8bb2\u89e3&#xff08;\u6a21\u62df\u6587\u4ef6\u4e0a\u4f20&#xff09; \u4e09\u3001\u5b8c\u6574\u53ef\u8fd0\u884c\u793a\u4f8b&amp;#xff08<\/p>\n","protected":false},"author":2,"featured_media":66838,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[6544,2878,43,44],"topic":[],"class_list":["post-66843","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-6544","tag-flutter","tag-43","tag-44"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Flutter + OpenHarmony \u8fdb\u5ea6\u6307\u793a\u5668\uff1aCircularProgressIndicator \u4e0e LinearProgressIndicator \u5728\u52a0\u8f7d\u72b6\u6001\u4e2d\u7684\u591a\u7aef\u8868\u73b0 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/66843.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Flutter + OpenHarmony \u8fdb\u5ea6\u6307\u793a\u5668\uff1aCircularProgressIndicator \u4e0e LinearProgressIndicator \u5728\u52a0\u8f7d\u72b6\u6001\u4e2d\u7684\u591a\u7aef\u8868\u73b0 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u4e2a\u4eba\u4e3b\u9875&#xff1a;ujainu \u6587\u7ae0\u76ee\u5f55 \u524d\u8a00\u4e00\u3001CircularProgressIndicator&#xff1a;\u4e0d\u786e\u5b9a\u52a0\u8f7d\u7684\u901a\u7528\u65b9\u6848\u9002\u7528\u573a\u666f\u6838\u5fc3\u7279\u6027OpenHarmony \u624b\u673a\u8bbe\u8ba1\u89c4\u8303\u4ee3\u7801\u793a\u4f8b\u4e0e\u8bb2\u89e3&#xff08;\u9875\u9762\u7ea7\u52a0\u8f7d&#xff09; 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