{"id":73086,"date":"2026-02-07T00:09:42","date_gmt":"2026-02-06T16:09:42","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/73086.html"},"modified":"2026-02-07T00:09:42","modified_gmt":"2026-02-06T16:09:42","slug":"flutter-for-openharmony-%e5%ae%9e%e6%88%98%ef%bc%9afile_selector-%e5%8e%9f%e7%94%9f%e6%96%87%e4%bb%b6%e9%80%89%e6%8b%a9%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/73086.html","title":{"rendered":"Flutter for OpenHarmony \u5b9e\u6218\uff1afile_selector \u2014 \u539f\u751f\u6587\u4ef6\u9009\u62e9\u6307\u5357"},"content":{"rendered":"<h2>Flutter for OpenHarmony \u5b9e\u6218&#xff1a;file_selector \u2014 \u539f\u751f\u6587\u4ef6\u9009\u62e9\u6307\u5357<\/h2>\n<h3>\u524d\u8a00<\/h3>\n<p>\u5728\u79fb\u52a8\u5e94\u7528\u5f00\u53d1\u4e2d&#xff0c;\u8ba9\u7528\u6237\u9009\u62e9\u6587\u4ef6&#xff08;\u5982\u56fe\u7247\u3001\u6587\u6863\u3001\u89c6\u9891&#xff09;\u662f\u4e00\u4e2a\u975e\u5e38\u9ad8\u9891\u7684\u9700\u6c42\u3002\u867d\u7136 image_picker \u53ef\u4ee5\u5904\u7406\u56fe\u7247\u548c\u89c6\u9891&#xff0c;\u4f46\u5f53\u6211\u4eec\u9700\u8981\u9009\u62e9\u4efb\u610f\u7c7b\u578b\u7684\u6587\u4ef6&#xff08;\u5982 PDF\u3001JSON\u3001ZIP&#xff09;\u65f6&#xff0c;\u5c31\u9700\u8981\u66f4\u901a\u7528\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<p>file_selector \u662f Flutter \u5b98\u65b9\u63d0\u4f9b\u7684\u63d2\u4ef6&#xff0c;\u65e8\u5728\u63d0\u4f9b\u8de8\u5e73\u53f0&#xff08;iOS, Android, Web, Desktop, OpenHarmony&#xff09;\u7684\u7edf\u4e00\u6587\u4ef6\u9009\u62e9\u80fd\u529b\u3002\u5728 OpenHarmony \u4e0a&#xff0c;\u5b83\u5bf9\u63a5\u4e86\u7cfb\u7edf\u7684 FilePicker \u63a5\u53e3&#xff0c;\u80fd\u591f\u62c9\u8d77\u539f\u751f\u7684\u6587\u4ef6\u9009\u62e9\u5668&#xff0c;\u7528\u6237\u4f53\u9a8c\u975e\u5e38\u6d41\u7545\u3002<\/p>\n<p>\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5728 OpenHarmony \u9879\u76ee\u4e2d\u96c6\u6210 file_selector&#xff0c;\u5b9e\u73b0\u5355\u6587\u4ef6\u9009\u62e9\u3001\u591a\u6587\u4ef6\u9009\u62e9\u4ee5\u53ca\u4fdd\u5b58\u6587\u4ef6&#xff08;\u53e6\u5b58\u4e3a&#xff09;\u7684\u529f\u80fd\u3002<\/p>\n<h3>\u4e00\u3001\u6838\u5fc3\u529f\u80fd<\/h3>\n<p>file_selector \u7684 API \u8bbe\u8ba1\u975e\u5e38\u7b80\u6d01&#xff0c;\u4e3b\u8981\u5305\u542b\u4ee5\u4e0b\u51e0\u4e2a\u6838\u5fc3\u65b9\u6cd5&#xff1a;<\/p>\n<ul>\n<li>openFile: \u9009\u62e9\u5355\u4e2a\u6587\u4ef6\u3002<\/li>\n<li>openFiles: \u9009\u62e9\u591a\u4e2a\u6587\u4ef6\u3002<\/li>\n<li>path_provider: \u4fdd\u5b58\u6587\u4ef6<\/li>\n<li>getSaveLocation: \u83b7\u53d6\u6587\u4ef6\u4fdd\u5b58\u8def\u5f84&#xff08;\u5373\u201c\u53e6\u5b58\u4e3a\u201d\u5bf9\u8bdd\u6846&#xff09;\u3002<\/li>\n<\/ul>\n<h3>\u4e8c\u3001\u5b89\u88c5\u4e0e\u914d\u7f6e<\/h3>\n<h4>2.1 \u6dfb\u52a0\u4f9d\u8d56<\/h4>\n<p>\u5728 pubspec.yaml \u4e2d\u6dfb\u52a0&#xff1a;<\/p>\n<p><span class=\"token key atrule\">dependencies<\/span><span class=\"token punctuation\">:<\/span><br \/>\n  <span class=\"token key atrule\">flutter<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token key atrule\">sdk<\/span><span class=\"token punctuation\">:<\/span> flutter<br \/>\n  <span class=\"token comment\"># \u8bf7\u52a1\u5fc5\u68c0\u67e5 pub.dev \u6216 OpenHarmony SIG \u4ed3\u5e93\u83b7\u53d6\u9002\u914d OHOS \u7684\u7248\u672c<\/span><br \/>\n  <span class=\"token key atrule\">file_selector<\/span><span class=\"token punctuation\">:<\/span> ^1.0.0<br \/>\n  <span class=\"token key atrule\">file_selector_ohos<\/span><span class=\"token punctuation\">:<\/span> any<br \/>\n  <span class=\"token key atrule\">path_provider_ohos<\/span><span class=\"token punctuation\">:<\/span> any<br \/>\n  <span class=\"token key atrule\">path_provider<\/span><span class=\"token punctuation\">:<\/span> ^2.1.5<\/p>\n<p><span class=\"token key atrule\">dependency_overrides<\/span><span class=\"token punctuation\">:<\/span><br \/>\n <span class=\"token comment\"># File Selector \u5168\u5957\u8986\u76d6<\/span><br \/>\n  <span class=\"token key atrule\">file_selector<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token key atrule\">git<\/span><span class=\"token punctuation\">:<\/span><br \/>\n      <span class=\"token key atrule\">url<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;https:\/\/atomgit.com\/openharmony-tpc\/flutter_packages.git&#034;<\/span><br \/>\n      <span class=\"token key atrule\">path<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;packages\/file_selector\/file_selector&#034;<\/span><br \/>\n  <span class=\"token key atrule\">file_selector_platform_interface<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token key atrule\">git<\/span><span class=\"token punctuation\">:<\/span><br \/>\n      <span class=\"token key atrule\">url<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;https:\/\/atomgit.com\/openharmony-tpc\/flutter_packages.git&#034;<\/span><br \/>\n      <span class=\"token key atrule\">path<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;packages\/file_selector\/file_selector_platform_interface&#034;<\/span><br \/>\n  <span class=\"token key atrule\">file_selector_ohos<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token key atrule\">git<\/span><span class=\"token punctuation\">:<\/span><br \/>\n      <span class=\"token key atrule\">url<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;https:\/\/atomgit.com\/openharmony-tpc\/flutter_packages.git&#034;<\/span><br \/>\n      <span class=\"token key atrule\">path<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;packages\/file_selector\/file_selector_ohos&#034;<\/span><br \/>\n        <span class=\"token comment\"># Path Provider Adapter<\/span><br \/>\n  <span class=\"token key atrule\">path_provider_ohos<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token key atrule\">git<\/span><span class=\"token punctuation\">:<\/span><br \/>\n      <span class=\"token key atrule\">url<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;https:\/\/atomgit.com\/openharmony-tpc\/flutter_packages.git&#034;<\/span><br \/>\n      <span class=\"token key atrule\">path<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token string\">&#034;packages\/path_provider\/path_provider_ohos&#034;<\/span><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260206160931-6986123b88864.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>2.2 OpenHarmony \u6743\u9650\u914d\u7f6e<\/h4>\n<p>\u4f7f\u7528\u7cfb\u7edf\u7684 Picker \u63a5\u53e3\u9009\u62e9\u6587\u4ef6\u901a\u5e38\u662f\u4e00\u4e2a\u201c\u7528\u6237\u6388\u6743\u201d\u7684\u8fc7\u7a0b&#xff08;\u7528\u6237\u4e3b\u52a8\u9009\u62e9\u6587\u4ef6\u5373\u89c6\u4e3a\u6388\u6743&#xff09;&#xff0c;\u56e0\u6b64\u901a\u5e38\u4e0d\u9700\u8981\u50cf Android \u90a3\u6837\u7533\u8bf7 READ_EXTERNAL_STORAGE \u6743\u9650\u3002OpenHarmony \u7684\u6c99\u7bb1\u673a\u5236\u4f1a\u81ea\u52a8\u6388\u6743\u5e94\u7528\u8bfb\u53d6\u7528\u6237\u9009\u4e2d\u7684\u90a3\u4e2a\u6587\u4ef6\u3002<\/p>\n<p>\u4f46\u662f&#xff0c;\u5982\u679c\u4f60\u9700\u8981\u8bbf\u95ee\u7279\u5b9a\u516c\u5171\u76ee\u5f55&#xff0c;\u53ef\u4ee5\u6309\u9700\u68c0\u67e5 module.json5 \u4e2d\u7684\u6743\u9650\u914d\u7f6e&#xff0c;\u4e00\u822c\u6765\u8bf4&#xff0c;\u57fa\u7840\u7684\u6587\u4ef6\u9009\u62e9\u65e0\u9700\u989d\u5916\u914d\u7f6e\u3002<\/p>\n<h3>\u4e09\u3001\u4ee3\u7801\u5b9e\u73b0<\/h3>\n<h4>3.1 \u9009\u62e9\u5355\u4e2a\u6587\u4ef6<\/h4>\n<p>\u6211\u4eec\u53ef\u4ee5\u6307\u5b9a XTypeGroup \u6765\u8fc7\u6ee4\u6587\u4ef6\u7c7b\u578b&#xff0c;\u4f8b\u5982\u53ea\u5141\u8bb8\u9009\u62e9\u6587\u672c\u6587\u4ef6\u6216\u56fe\u7247\u3002<\/p>\n<p><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><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;package:file_selector\/file_selector.dart&#039;<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">FileSelectorPage<\/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\">FileSelectorPage<\/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 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\">_pickSingleFile<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">BuildContext<\/span> context<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u5b9a\u4e49\u6587\u4ef6\u7c7b\u578b\u8fc7\u6ee4\u5668<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">XTypeGroup<\/span> typeGroup <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">XTypeGroup<\/span><span class=\"token punctuation\">(<\/span><br \/>\n      label<span class=\"token punctuation\">:<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;images&#039;<\/span><\/span><span class=\"token punctuation\">,<\/span><br \/>\n      extensions<span class=\"token punctuation\">:<\/span> <span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;jpg&#039;<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;png&#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><\/p>\n<p>    <span class=\"token comment\">\/\/ \u6253\u5f00\u9009\u62e9\u5668<\/span><br \/>\n    <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">XFile<\/span><span class=\"token operator\">?<\/span> file <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token function\">openFile<\/span><span class=\"token punctuation\">(<\/span><br \/>\n      acceptedTypeGroups<span class=\"token punctuation\">:<\/span> <span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">XTypeGroup<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">[<\/span>typeGroup<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span><br \/>\n    <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>file <span class=\"token operator\">!&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token comment\">\/\/ \u83b7\u53d6\u6587\u4ef6\u540d\u548c\u8def\u5f84<\/span><br \/>\n      <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;\u6587\u4ef6\u540d: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">${<\/span><span class=\"token expression\">file<span class=\"token punctuation\">.<\/span>name<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;\u8def\u5f84: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">${<\/span><span class=\"token expression\">file<span class=\"token punctuation\">.<\/span>path<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>      <span class=\"token comment\">\/\/ \u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9<\/span><br \/>\n      <span class=\"token keyword\">final<\/span> int size <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> file<span class=\"token punctuation\">.<\/span><span class=\"token function\">length<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;\u6587\u4ef6\u5927\u5c0f: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">$<\/span><span class=\"token expression\">size<\/span><\/span><span class=\"token string\"> \u5b57\u8282&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>      <span class=\"token class-name\">ScaffoldMessenger<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">of<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">showSnackBar<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        <span class=\"token class-name\">SnackBar<\/span><span class=\"token punctuation\">(<\/span>content<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Text<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;\u5df2\u9009\u62e9: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">${<\/span><span class=\"token expression\">file<span class=\"token punctuation\">.<\/span>name<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#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> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token comment\">\/\/ \u7528\u6237\u53d6\u6d88\u4e86\u9009\u62e9<\/span><br \/>\n      <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;\u7528\u6237\u53d6\u6d88\u64cd\u4f5c&#039;<\/span><\/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;\u6587\u4ef6\u9009\u62e9\u6f14\u793a&#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> <span class=\"token class-name\">ElevatedButton<\/span><span class=\"token punctuation\">(<\/span><br \/>\n          onPressed<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> <span class=\"token function\">_pickSingleFile<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">)<\/span><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;\u9009\u62e9\u4e00\u5f20\u56fe\u7247&#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><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260206160935-6986123f0941e.gif\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>3.2 \u9009\u62e9\u591a\u4e2a\u6587\u4ef6<\/h4>\n<p>\u4f7f\u7528 openFiles \u65b9\u6cd5\u5373\u53ef&#xff0c;\u8fd4\u56de\u7684\u662f List&lt;XFile&gt;\u3002<\/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\">_pickMultipleFiles<\/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\">final<\/span> <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">XFile<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> files <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token function\">openFiles<\/span><span class=\"token punctuation\">(<\/span><br \/>\n    acceptedTypeGroups<span class=\"token punctuation\">:<\/span> <span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">XTypeGroup<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">[<\/span><br \/>\n      <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">XTypeGroup<\/span><span class=\"token punctuation\">(<\/span>label<span class=\"token punctuation\">:<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;All Files&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token comment\">\/\/ \u5141\u8bb8\u6240\u6709\u7c7b\u578b<\/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><\/p>\n<p>  <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;\u9009\u62e9\u4e86 <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">${<\/span><span class=\"token expression\">files<span class=\"token punctuation\">.<\/span>length<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u4e2a\u6587\u4ef6&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">var<\/span> file <span class=\"token keyword\">in<\/span> files<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;\u8def\u5f84: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">${<\/span><span class=\"token expression\">file<span class=\"token punctuation\">.<\/span>path<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#039;<\/span><\/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><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260206160935-6986123fd4f70.gif\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>3.3 \u4fdd\u5b58\u6587\u4ef6&#xff08;\u53e6\u5b58\u4e3a&#xff09;<\/h4>\n<p>\u5728 OpenHarmony \u4e0a&#xff0c;\u8fd9\u4f1a\u62c9\u8d77\u7cfb\u7edf\u7684\u201c\u4fdd\u5b58\u6587\u4ef6\u201d\u9762\u677f&#xff0c;\u8ba9\u7528\u6237\u9009\u62e9\u4fdd\u5b58\u7684\u4f4d\u7f6e\u548c\u6587\u4ef6\u540d\u3002<\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;dart:io&#039;<\/span><\/span><span class=\"token punctuation\">;<\/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><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;package:file_selector\/file_selector.dart&#039;<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;package:path_provider\/path_provider.dart&#039;<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">SaveFilePage<\/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\">SaveFilePage<\/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 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\">_saveFile<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">BuildContext<\/span> context<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">String<\/span> fileName <span class=\"token operator\">&#061;<\/span><br \/>\n        <span class=\"token string-literal\"><span class=\"token string\">&#039;my_export_data_<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">${<\/span><span class=\"token expression\"><span class=\"token class-name\">DateTime<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">now<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>millisecondsSinceEpoch<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">.txt&#039;<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token function\">debugPrint<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;\u51c6\u5907\u4fdd\u5b58\u6587\u4ef6&#8230;&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>      <span class=\"token comment\">\/\/ 1. \u83b7\u53d6\u5e94\u7528\u79c1\u6709\u6587\u6863\u76ee\u5f55 (Sandboxed)<\/span><br \/>\n      <span class=\"token comment\">\/\/ \u7531\u4e8e file_selector_ohos \u6682\u672a\u5b9e\u73b0 getSaveLocation&#xff0c;<\/span><br \/>\n      <span class=\"token comment\">\/\/ \u6211\u4eec\u63a8\u8350\u4f7f\u7528\u6807\u51c6\u8def\u5f84\u4fdd\u5b58\u6570\u636e<\/span><br \/>\n      <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">Directory<\/span> directory <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token function\">getApplicationDocumentsDirectory<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">String<\/span> path <span class=\"token operator\">&#061;<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">${<\/span><span class=\"token expression\">directory<span class=\"token punctuation\">.<\/span>path<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">\/<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">$<\/span><span class=\"token expression\">fileName<\/span><\/span><span class=\"token string\">&#039;<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>      <span class=\"token function\">debugPrint<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;\u76ee\u6807\u8def\u5f84: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">$<\/span><span class=\"token expression\">path<\/span><\/span><span class=\"token string\">&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>      <span class=\"token comment\">\/\/ 2. \u5199\u5165\u6587\u4ef6<\/span><br \/>\n      <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">File<\/span> file <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">File<\/span><span class=\"token punctuation\">(<\/span>path<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">await<\/span> file<span class=\"token punctuation\">.<\/span><span class=\"token function\">writeAsString<\/span><span class=\"token punctuation\">(<\/span><br \/>\n          <span class=\"token string-literal\"><span class=\"token string\">&#039;Hello OpenHarmony from Flutter! \\\\nSaved at <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">${<\/span><span class=\"token expression\"><span class=\"token class-name\">DateTime<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">now<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>      <span class=\"token function\">debugPrint<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;\u6587\u4ef6\u5199\u5165\u6210\u529f&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>      <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">.<\/span>mounted<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ 3. \u63d0\u793a\u7528\u6237<\/span><br \/>\n        <span class=\"token function\">showDialog<\/span><span class=\"token punctuation\">(<\/span><br \/>\n          context<span class=\"token punctuation\">:<\/span> context<span class=\"token punctuation\">,<\/span><br \/>\n          builder<span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">(<\/span>ctx<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token class-name\">AlertDialog<\/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;\u4fdd\u5b58\u6210\u529f&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n            content<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">SingleChildScrollView<\/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                crossAxisAlignment<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">CrossAxisAlignment<\/span><span class=\"token punctuation\">.<\/span>start<span class=\"token punctuation\">,<\/span><br \/>\n                mainAxisSize<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">MainAxisSize<\/span><span class=\"token punctuation\">.<\/span>min<span class=\"token punctuation\">,<\/span><br \/>\n                children<span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n                  <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;\u6587\u4ef6\u5df2\u4fdd\u5b58\u81f3\u5e94\u7528\u6c99\u7bb1\u76ee\u5f55&#xff1a;&#039;<\/span><\/span><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\">8<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                  <span class=\"token class-name\">Container<\/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\">8<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                    color<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Colors<\/span><span class=\"token punctuation\">.<\/span>grey<span class=\"token punctuation\">[<\/span><span class=\"token number\">200<\/span><span class=\"token punctuation\">]<\/span><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>path<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\">12<\/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 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\">16<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                  <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">Text<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                      <span class=\"token string-literal\"><span class=\"token string\">&#039;\u6ce8&#xff1a;\u7531\u4e8e file_selector \u6682\u672a\u9002\u914d OpenHarmony &#034;\u53e6\u5b58\u4e3a&#034; \u63a5\u53e3&#xff0c;\u6b64\u5904\u6f14\u793a\u4f7f\u7528 path_provider \u4fdd\u5b58\u5230\u5e94\u7528\u79c1\u6709\u76ee\u5f55\u3002&#039;<\/span><\/span><span class=\"token punctuation\">,<\/span><br \/>\n                      style<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">TextStyle<\/span><span class=\"token punctuation\">(<\/span>color<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Colors<\/span><span class=\"token punctuation\">.<\/span>grey<span class=\"token punctuation\">,<\/span> fontSize<span class=\"token punctuation\">:<\/span> <span class=\"token number\">12<\/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            actions<span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n              <span class=\"token class-name\">TextButton<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                onPressed<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> <span class=\"token class-name\">Navigator<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">pop<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token punctuation\">)<\/span><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;\u597d\u7684&#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> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span>e<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token function\">debugPrint<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;\u4fdd\u5b58\u51fa\u9519: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">$<\/span><span class=\"token expression\">e<\/span><\/span><span class=\"token string\">&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">.<\/span>mounted<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/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 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;\u4fdd\u5b58\u5931\u8d25: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">$<\/span><span class=\"token expression\">e<\/span><\/span><span class=\"token string\">&#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><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;3.3 \u4fdd\u5b58\u6587\u4ef6 (\u66ff\u4ee3\u65b9\u6848)&#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> <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\">const<\/span> <span class=\"token class-name\">Padding<\/span><span class=\"token punctuation\">(<\/span><br \/>\n              padding<span class=\"token punctuation\">:<\/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\">16.0<\/span><span class=\"token punctuation\">)<\/span><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><br \/>\n                <span class=\"token string-literal\"><span class=\"token string\">&#039;\u6ce8&#xff1a;OpenHarmony \u6682\u4e0d\u652f\u6301 file_selector \u7684 &#034;\u53e6\u5b58\u4e3a&#034; (getSaveLocation)\u3002\\\\n&#039;<\/span><\/span><br \/>\n                <span class=\"token string-literal\"><span class=\"token string\">&#039;\u672c\u9875\u6f14\u793a\u4f7f\u7528 path_provider \u4fdd\u5b58\u6587\u4ef6\u5230\u5e94\u7528\u6c99\u7bb1\u3002&#039;<\/span><\/span><span class=\"token punctuation\">,<\/span><br \/>\n                textAlign<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">TextAlign<\/span><span class=\"token punctuation\">.<\/span>center<span class=\"token punctuation\">,<\/span><br \/>\n                style<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">TextStyle<\/span><span class=\"token punctuation\">(<\/span>color<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Colors<\/span><span class=\"token punctuation\">.<\/span>grey<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 class-name\">ElevatedButton<\/span><span class=\"token punctuation\">(<\/span><br \/>\n              onPressed<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> <span class=\"token function\">_saveFile<\/span><span class=\"token punctuation\">(<\/span>context<span class=\"token punctuation\">)<\/span><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;\u4fdd\u5b58 text \u6587\u4ef6\u5230\u6c99\u7bb1&#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><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260206160936-69861240bf917.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u56db\u3001OpenHarmony \u5e73\u53f0\u9002\u914d\u7ec6\u8282<\/h3>\n<h4>4.1 \u8def\u5f84\u4e0e\u6c99\u7bb1<\/h4>\n<p>OpenHarmony \u91c7\u7528\u4e25\u683c\u7684\u6c99\u7bb1\u673a\u5236\u3002\u5f53\u7528\u6237\u901a\u8fc7 Picker \u9009\u62e9\u6587\u4ef6\u540e&#xff0c;\u7cfb\u7edf\u901a\u5e38\u4f1a\u6388\u4e88\u5e94\u7528\u5bf9\u8be5\u6587\u4ef6\u7684\u4e34\u65f6\u8bfb\u5199\u6743\u9650\u3002file_selector \u8fd4\u56de\u7684 path \u901a\u5e38\u662f\u4e00\u4e2a\u53ef\u4ee5\u76f4\u63a5\u4f9b Dart File \u5bf9\u8c61\u8bfb\u53d6\u7684\u8def\u5f84\u3002<\/p>\n<h4>4.2 MIME Type \u8fc7\u6ee4<\/h4>\n<p>XTypeGroup \u652f\u6301 extensions&#xff08;\u6269\u5c55\u540d&#xff09;\u3001mimeTypes&#xff08;MIME\u7c7b\u578b&#xff09;\u548c macUTIs&#xff08;iOS\u4e13\u7528&#xff09;\u3002\u5728 OpenHarmony \u4e0a&#xff0c;\u5efa\u8bae\u4f18\u5148\u4f7f\u7528 extensions&#xff0c;\u517c\u5bb9\u6027\u6700\u597d\u3002<\/p>\n<p><span class=\"token comment\">\/\/ \u63a8\u8350\u505a\u6cd5&#xff1a;\u4f7f\u7528\u6269\u5c55\u540d<\/span><br \/>\n<span class=\"token keyword\">const<\/span> <span class=\"token class-name\">XTypeGroup<\/span><span class=\"token punctuation\">(<\/span>extensions<span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;pdf&#039;<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;doc&#039;<\/span><\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u53ef\u80fd\u5b58\u5728\u517c\u5bb9\u6027\u5dee\u5f02&#xff1a;\u4f7f\u7528 MIME<\/span><br \/>\n<span class=\"token comment\">\/\/ const XTypeGroup(mimeTypes: [&#039;application\/pdf&#039;]); <\/span><\/p>\n<h4>4.3 UI \u5dee\u5f02<\/h4>\n<p>file_selector \u5728 OpenHarmony \u4e0a\u8c03\u7528\u7684\u662f\u7cfb\u7edf\u7ea7\u7684 UI&#xff08;FilePicker&#xff09;\u3002\u8fd9\u610f\u5473\u7740 UI \u6837\u5f0f&#xff08;\u5982\u5217\u8868\u89c6\u56fe\u3001\u7f51\u683c\u89c6\u56fe\u3001\u6392\u5e8f\u65b9\u5f0f&#xff09;\u662f\u7531\u7cfb\u7edf\u51b3\u5b9a\u7684&#xff0c;Flutter \u65e0\u6cd5\u4fee\u6539\u5176\u5916\u89c2&#xff0c;\u53ea\u80fd\u63a7\u5236\u53ef\u9009\u7684\u6587\u4ef6\u7c7b\u578b\u3002<\/p>\n<h3>\u4e94\u3001\u5b8c\u6574\u793a\u4f8b\u4ee3\u7801<\/h3>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u7efc\u5408\u793a\u4f8b&#xff0c;\u5305\u542b\u5355\u9009\u3001\u591a\u9009\u548c\u4fdd\u5b58\u529f\u80fd\u3002<\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;dart:io&#039;<\/span><\/span><span class=\"token punctuation\">;<\/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><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;package:file_selector\/file_selector.dart&#039;<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;package:path_provider\/path_provider.dart&#039;<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">FileSelectorPage<\/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\">FileSelectorPage<\/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\">FileSelectorPage<\/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\">_FileSelectorPageState<\/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> _FileSelectorPageState <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\">FileSelectorPage<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token class-name\">String<\/span> _statusText <span class=\"token operator\">&#061;<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;\u8bf7\u9009\u62e9\u64cd\u4f5c&#039;<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">XFile<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> _selectedFiles <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u9009\u62e9\u56fe\u7247<\/span><br \/>\n  <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\">_pickImage<\/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\">const<\/span> <span class=\"token class-name\">XTypeGroup<\/span> typeGroup <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">XTypeGroup<\/span><span class=\"token punctuation\">(<\/span><br \/>\n      label<span class=\"token punctuation\">:<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;images&#039;<\/span><\/span><span class=\"token punctuation\">,<\/span><br \/>\n      extensions<span class=\"token punctuation\">:<\/span> <span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;jpg&#039;<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;png&#039;<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;gif&#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 comment\">\/\/ \u6355\u83b7\u5f02\u5e38&#xff0c;\u9632\u6b62\u5728\u4e0d\u652f\u6301\u7684\u5e73\u53f0\u4e0a\u5d29\u6e83<\/span><br \/>\n    <span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">XFile<\/span><span class=\"token operator\">?<\/span> file <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token function\">openFile<\/span><span class=\"token punctuation\">(<\/span>acceptedTypeGroups<span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span>typeGroup<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>file <span class=\"token operator\">!&#061;<\/span> <span class=\"token keyword\">null<\/span><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          _statusText <span class=\"token operator\">&#061;<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;\u5df2\u9009\u62e9: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">${<\/span><span class=\"token expression\">file<span class=\"token punctuation\">.<\/span>name<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#039;<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n          _selectedFiles <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">[<\/span>file<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 keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u7528\u6237\u53d6\u6d88<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span>e<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        _statusText <span class=\"token operator\">&#061;<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;\u9519\u8bef: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">$<\/span><span class=\"token expression\">e<\/span><\/span><span class=\"token string\">&#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 comment\">\/\/ \u9009\u62e9\u591a\u4e2a\u6587\u6863<\/span><br \/>\n  <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\">_pickDocs<\/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\">const<\/span> <span class=\"token class-name\">XTypeGroup<\/span> typeGroup <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">XTypeGroup<\/span><span class=\"token punctuation\">(<\/span><br \/>\n      label<span class=\"token punctuation\">:<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;documents&#039;<\/span><\/span><span class=\"token punctuation\">,<\/span><br \/>\n      extensions<span class=\"token punctuation\">:<\/span> <span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">[<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;pdf&#039;<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;txt&#039;<\/span><\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;json&#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 keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">List<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">XFile<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> files <span class=\"token operator\">&#061;<\/span><br \/>\n          <span class=\"token keyword\">await<\/span> <span class=\"token function\">openFiles<\/span><span class=\"token punctuation\">(<\/span>acceptedTypeGroups<span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span>typeGroup<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>files<span class=\"token punctuation\">.<\/span>isNotEmpty<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          _statusText <span class=\"token operator\">&#061;<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;\u5df2\u9009\u62e9 <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">${<\/span><span class=\"token expression\">files<span class=\"token punctuation\">.<\/span>length<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u4e2a\u6587\u4ef6&#039;<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n          _selectedFiles <span class=\"token operator\">&#061;<\/span> files<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> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span>e<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        _statusText <span class=\"token operator\">&#061;<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;\u9519\u8bef: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">$<\/span><span class=\"token expression\">e<\/span><\/span><span class=\"token string\">&#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 comment\">\/\/ \u53e6\u5b58\u4e3a (\u6a21\u62df\u5bfc\u51fa\u529f\u80fd)<\/span><br \/>\n  <span class=\"token comment\">\/\/ \u6ce8: \u7531\u4e8e file_selector_ohos \u6682\u672a\u5b9e\u73b0 getSaveLocation&#xff0c;\u8fd9\u91cc\u4f7f\u7528 path_provider \u66ff\u4ee3<\/span><br \/>\n  <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\">_saveText<\/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\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">Directory<\/span> directory <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token function\">getApplicationDocumentsDirectory<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">String<\/span> fileName <span class=\"token operator\">&#061;<\/span><br \/>\n          <span class=\"token string-literal\"><span class=\"token string\">&#039;example_<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">${<\/span><span class=\"token expression\"><span class=\"token class-name\">DateTime<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">now<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>millisecondsSinceEpoch<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">.txt&#039;<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">String<\/span> path <span class=\"token operator\">&#061;<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">${<\/span><span class=\"token expression\">directory<span class=\"token punctuation\">.<\/span>path<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">\/<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">$<\/span><span class=\"token expression\">fileName<\/span><\/span><span class=\"token string\">&#039;<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>      <span class=\"token comment\">\/\/ \u5199\u5165\u6570\u636e<\/span><br \/>\n      <span class=\"token keyword\">final<\/span> file <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">File<\/span><span class=\"token punctuation\">(<\/span>path<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">await<\/span> file<span class=\"token punctuation\">.<\/span><span class=\"token function\">writeAsString<\/span><span class=\"token punctuation\">(<\/span><br \/>\n          <span class=\"token string-literal\"><span class=\"token string\">&#039;\u8fd9\u662f\u901a\u8fc7 Flutter file_selector \u9875\u9762\u6f14\u793a\u4fdd\u5b58\u7684\u6587\u4ef6\u5185\u5bb9\u3002\\\\nTime: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">${<\/span><span class=\"token expression\"><span class=\"token class-name\">DateTime<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">now<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>      <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>mounted<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token function\">setState<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        _statusText <span class=\"token operator\">&#061;<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;\u6587\u4ef6\u5df2\u4fdd\u5b58\u81f3\u6c99\u7bb1: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">$<\/span><span class=\"token expression\">path<\/span><\/span><span class=\"token string\">&#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><\/p>\n<p>      <span class=\"token comment\">\/\/ \u5f39\u51fa\u8be6\u7ec6\u4fe1\u606f\u7684 Dialog<\/span><br \/>\n      <span class=\"token function\">showDialog<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        context<span class=\"token punctuation\">:<\/span> context<span class=\"token punctuation\">,<\/span><br \/>\n        builder<span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">(<\/span>ctx<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token class-name\">AlertDialog<\/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;\u4fdd\u5b58\u6210\u529f (path_provider)&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n          content<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">SingleChildScrollView<\/span><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><span class=\"token string-literal\"><span class=\"token string\">&#039;\u6587\u4ef6\u5df2\u5199\u5165\u5e94\u7528\u79c1\u6709\u76ee\u5f55&#xff1a;\\\\n\\\\n<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">$<\/span><span class=\"token expression\">path<\/span><\/span><span class=\"token string\">\\\\n\\\\n(OpenHarmony \u6682\u4e0d\u652f\u6301\u539f\u751f\u201c\u53e6\u5b58\u4e3a\u201d\u9762\u677f)&#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          actions<span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n            <span class=\"token class-name\">TextButton<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                onPressed<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> <span class=\"token class-name\">Navigator<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">pop<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> 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;OK&#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 keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span>e<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        _statusText <span class=\"token operator\">&#061;<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;\u4fdd\u5b58\u5931\u8d25: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">$<\/span><span class=\"token expression\">e<\/span><\/span><span class=\"token string\">&#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;File Selector OHOS&#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\">16.0<\/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          children<span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">[<\/span><br \/>\n            <span class=\"token class-name\">Container<\/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\">12<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n              width<span class=\"token punctuation\">:<\/span> double<span class=\"token punctuation\">.<\/span>infinity<span class=\"token punctuation\">,<\/span><br \/>\n              decoration<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">BoxDecoration<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                color<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Colors<\/span><span class=\"token punctuation\">.<\/span>grey<span class=\"token punctuation\">[<\/span><span class=\"token number\">200<\/span><span class=\"token punctuation\">]<\/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\">8<\/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              child<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Text<\/span><span class=\"token punctuation\">(<\/span>_statusText<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\">16<\/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 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><\/p>\n<p>            <span class=\"token comment\">\/\/ \u9009\u4e2d\u6587\u4ef6\u5217\u8868\u533a\u57df<\/span><br \/>\n            <span class=\"token class-name\">Expanded<\/span><span class=\"token punctuation\">(<\/span><br \/>\n              child<span class=\"token punctuation\">:<\/span> _selectedFiles<span class=\"token punctuation\">.<\/span>isEmpty<br \/>\n                  <span class=\"token operator\">?<\/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                        mainAxisSize<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">MainAxisSize<\/span><span class=\"token punctuation\">.<\/span>min<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\">Icon<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Icons<\/span><span class=\"token punctuation\">.<\/span>folder_open<span class=\"token punctuation\">,<\/span><br \/>\n                              size<span class=\"token punctuation\">:<\/span> <span class=\"token number\">64<\/span><span class=\"token punctuation\">,<\/span> color<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Colors<\/span><span class=\"token punctuation\">.<\/span>indigo<span class=\"token punctuation\">[<\/span><span class=\"token number\">100<\/span><span class=\"token punctuation\">]<\/span><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\">16<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                          <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;\u6682\u65e0\u9009\u4e2d\u6587\u4ef6&#039;<\/span><\/span><span class=\"token punctuation\">,<\/span><br \/>\n                              style<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">TextStyle<\/span><span class=\"token punctuation\">(<\/span>color<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Colors<\/span><span class=\"token punctuation\">.<\/span>grey<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> <span class=\"token class-name\">ListView<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">builder<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                      itemCount<span class=\"token punctuation\">:<\/span> _selectedFiles<span class=\"token punctuation\">.<\/span>length<span class=\"token punctuation\">,<\/span><br \/>\n                      itemBuilder<span class=\"token punctuation\">:<\/span> <span class=\"token punctuation\">(<\/span>ctx<span class=\"token punctuation\">,<\/span> index<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                        <span class=\"token keyword\">final<\/span> file <span class=\"token operator\">&#061;<\/span> _selectedFiles<span class=\"token punctuation\">[<\/span>index<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                        <span class=\"token keyword\">return<\/span> <span class=\"token class-name\">Card<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                          elevation<span class=\"token punctuation\">:<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                          margin<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\">only<\/span><span class=\"token punctuation\">(<\/span>bottom<span class=\"token punctuation\">:<\/span> <span class=\"token number\">8<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                          child<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">ListTile<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                            leading<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Icon<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                              <span class=\"token function\">_getFileIcon<\/span><span class=\"token punctuation\">(<\/span>file<span class=\"token punctuation\">.<\/span>name<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                              color<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Colors<\/span><span class=\"token punctuation\">.<\/span>indigo<span class=\"token punctuation\">,<\/span><br \/>\n                            <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                            title<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Text<\/span><span class=\"token punctuation\">(<\/span>file<span class=\"token punctuation\">.<\/span>name<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                            subtitle<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Text<\/span><span class=\"token punctuation\">(<\/span>file<span class=\"token punctuation\">.<\/span>path<span class=\"token punctuation\">,<\/span><br \/>\n                                maxLines<span class=\"token punctuation\">:<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> overflow<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">TextOverflow<\/span><span class=\"token punctuation\">.<\/span>ellipsis<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                            trailing<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Text<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                              <span class=\"token function\">_formatSize<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                                  index<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token comment\">\/\/ \u4ec5\u4e3a\u6f14\u793a&#xff0c;\u5b9e\u9645\u9700\u5f02\u6b65\u83b7\u53d6 await file.length()<\/span><br \/>\n                              style<span class=\"token punctuation\">:<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">TextStyle<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                                  fontSize<span class=\"token punctuation\">:<\/span> <span class=\"token number\">12<\/span><span class=\"token punctuation\">,<\/span> color<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Colors<\/span><span class=\"token punctuation\">.<\/span>grey<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><span class=\"token punctuation\">,<\/span><\/p>\n<p>            <span class=\"token keyword\">const<\/span> <span class=\"token class-name\">Divider<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><\/p>\n<p>            <span class=\"token comment\">\/\/ \u64cd\u4f5c\u6309\u94ae\u533a\u57df<\/span><br \/>\n            <span class=\"token class-name\">Wrap<\/span><span class=\"token punctuation\">(<\/span><br \/>\n              spacing<span class=\"token punctuation\">:<\/span> <span class=\"token number\">16<\/span><span class=\"token punctuation\">,<\/span><br \/>\n              runSpacing<span class=\"token punctuation\">:<\/span> <span class=\"token number\">16<\/span><span class=\"token punctuation\">,<\/span><br \/>\n              alignment<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">WrapAlignment<\/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 function\">_ActionButton<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                  icon<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Icons<\/span><span class=\"token punctuation\">.<\/span>image<span class=\"token punctuation\">,<\/span><br \/>\n                  label<span class=\"token punctuation\">:<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;\u9009\u56fe\u7247&#039;<\/span><\/span><span class=\"token punctuation\">,<\/span><br \/>\n                  color<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Colors<\/span><span class=\"token punctuation\">.<\/span>purple<span class=\"token punctuation\">,<\/span><br \/>\n                  onPressed<span class=\"token punctuation\">:<\/span> _pickImage<span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token function\">_ActionButton<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                  icon<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Icons<\/span><span class=\"token punctuation\">.<\/span>library_books<span class=\"token punctuation\">,<\/span><br \/>\n                  label<span class=\"token punctuation\">:<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;\u9009\u6587\u6863(\u591a\u9009)&#039;<\/span><\/span><span class=\"token punctuation\">,<\/span><br \/>\n                  color<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Colors<\/span><span class=\"token punctuation\">.<\/span>orange<span class=\"token punctuation\">,<\/span><br \/>\n                  onPressed<span class=\"token punctuation\">:<\/span> _pickDocs<span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n                <span class=\"token function\">_ActionButton<\/span><span class=\"token punctuation\">(<\/span><br \/>\n                  icon<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Icons<\/span><span class=\"token punctuation\">.<\/span>save<span class=\"token punctuation\">,<\/span><br \/>\n                  label<span class=\"token punctuation\">:<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;\u53e6\u5b58\u4e3a&#039;<\/span><\/span><span class=\"token punctuation\">,<\/span><br \/>\n                  color<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Colors<\/span><span class=\"token punctuation\">.<\/span>blue<span class=\"token punctuation\">,<\/span><br \/>\n                  onPressed<span class=\"token punctuation\">:<\/span> _saveText<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 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 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><\/p>\n<p>  <span class=\"token class-name\">IconData<\/span> <span class=\"token function\">_getFileIcon<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> name<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">final<\/span> lowerName <span class=\"token operator\">&#061;<\/span> name<span class=\"token punctuation\">.<\/span><span class=\"token function\">toLowerCase<\/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>lowerName<span class=\"token punctuation\">.<\/span><span class=\"token function\">endsWith<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;.jpg&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">||<\/span> lowerName<span class=\"token punctuation\">.<\/span><span class=\"token function\">endsWith<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;.png&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n      <span class=\"token keyword\">return<\/span> <span class=\"token class-name\">Icons<\/span><span class=\"token punctuation\">.<\/span>image<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>lowerName<span class=\"token punctuation\">.<\/span><span class=\"token function\">endsWith<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;.pdf&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token class-name\">Icons<\/span><span class=\"token punctuation\">.<\/span>picture_as_pdf<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>lowerName<span class=\"token punctuation\">.<\/span><span class=\"token function\">endsWith<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;.txt&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token class-name\">Icons<\/span><span class=\"token punctuation\">.<\/span>description<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>lowerName<span class=\"token punctuation\">.<\/span><span class=\"token function\">endsWith<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-literal\"><span class=\"token string\">&#039;.json&#039;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span> <span class=\"token class-name\">Icons<\/span><span class=\"token punctuation\">.<\/span>code<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token class-name\">Icons<\/span><span class=\"token punctuation\">.<\/span>insert_drive_file<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token class-name\">String<\/span> <span class=\"token function\">_formatSize<\/span><span class=\"token punctuation\">(<\/span>int index<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u771f\u5b9e\u573a\u666f\u4e0b XFile.length() \u662f Future&#xff0c;\u8fd9\u91cc\u4e3a\u4e86 UI \u7b80\u6d01\u672a\u8c03\u7528<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token string-literal\"><span class=\"token string\">&#039;Tap to read&#039;<\/span><\/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> _ActionButton <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> <span class=\"token class-name\">IconData<\/span> icon<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">String<\/span> label<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">Color<\/span> color<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token keyword\">final<\/span> <span class=\"token class-name\">VoidCallback<\/span> onPressed<span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token keyword\">const<\/span> <span class=\"token function\">_ActionButton<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n    required <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>icon<span class=\"token punctuation\">,<\/span><br \/>\n    required <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>label<span class=\"token punctuation\">,<\/span><br \/>\n    required <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>color<span class=\"token punctuation\">,<\/span><br \/>\n    required <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>onPressed<span class=\"token punctuation\">,<\/span><br \/>\n  <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\">ElevatedButton<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">icon<\/span><span class=\"token punctuation\">(<\/span><br \/>\n      style<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">ElevatedButton<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">styleFrom<\/span><span class=\"token punctuation\">(<\/span><br \/>\n        backgroundColor<span class=\"token punctuation\">:<\/span> color<span class=\"token punctuation\">,<\/span><br \/>\n        foregroundColor<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Colors<\/span><span class=\"token punctuation\">.<\/span>white<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\">symmetric<\/span><span class=\"token punctuation\">(<\/span>horizontal<span class=\"token punctuation\">:<\/span> <span class=\"token number\">20<\/span><span class=\"token punctuation\">,<\/span> vertical<span class=\"token punctuation\">:<\/span> <span class=\"token number\">12<\/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      onPressed<span class=\"token punctuation\">:<\/span> onPressed<span class=\"token punctuation\">,<\/span><br \/>\n      icon<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Icon<\/span><span class=\"token punctuation\">(<\/span>icon<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      label<span class=\"token punctuation\">:<\/span> <span class=\"token class-name\">Text<\/span><span class=\"token punctuation\">(<\/span>label<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><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260206160940-698612447d274.gif\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u516d\u3001\u603b\u7ed3<\/h3>\n<p>file_selector \u4e3a OpenHarmony \u5e94\u7528\u63d0\u4f9b\u4e86\u6807\u51c6\u5316\u7684\u6587\u4ef6\u4ea4\u4e92\u80fd\u529b\u3002\u76f8\u6bd4\u4e8e\u76f4\u63a5\u8c03\u7528\u539f\u751f Channel&#xff0c;\u4f7f\u7528\u6b64\u63d2\u4ef6\u80fd\u4fdd\u6301\u4ee3\u7801\u7684\u8de8\u5e73\u53f0\u4e00\u81f4\u6027\u3002<\/p>\n<p>\u5728\u5904\u7406\u5927\u6587\u4ef6\u8bfb\u53d6\u65f6&#xff0c;\u5efa\u8bae\u914d\u5408 Dart \u7684 Stream \u6216 Isolate \u6765\u907f\u514d\u963b\u585e UI \u7ebf\u7a0b\u3002<\/p>\n<hr \/>\n<p>&#x1f310; \u6b22\u8fce\u52a0\u5165\u5f00\u6e90\u9e3f\u8499\u8de8\u5e73\u53f0\u793e\u533a&#xff1a;\u5f00\u6e90\u9e3f\u8499\u8de8\u5e73\u53f0\u5f00\u53d1\u8005\u793e\u533a<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Flutter for OpenHarmony \u5b9e\u6218&#xff1a;file_selector \u2014 \u539f\u751f\u6587\u4ef6\u9009\u62e9\u6307\u5357<br \/>\n\u524d\u8a00<br \/>\n\u5728\u79fb\u52a8\u5e94\u7528\u5f00\u53d1\u4e2d&#xff0c;\u8ba9\u7528\u6237\u9009\u62e9\u6587\u4ef6&#xff08;\u5982\u56fe\u7247\u3001\u6587\u6863\u3001\u89c6\u9891&#xff09;\u662f\u4e00\u4e2a\u975e\u5e38\u9ad8\u9891\u7684\u9700\u6c42\u3002\u867d\u7136 image_picker \u53ef\u4ee5\u5904\u7406\u56fe\u7247\u548c\u89c6\u9891&#xff0c;\u4f46\u5f53\u6211\u4eec\u9700\u8981\u9009\u62e9\u4efb\u610f\u7c7b\u578b\u7684\u6587\u4ef6&#xff08;\u5982 PDF\u3001JSON\u3001ZIP&#xff09;\u65f6&#xff0c;\u5c31\u9700\u8981\u66f4\u901a\u7528\u7684\u89e3\u51b3\u65b9\u6848\u3002<br \/>\nfile_selector \u662f <\/p>\n","protected":false},"author":2,"featured_media":73081,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[2878,280,67],"topic":[],"class_list":["post-73086","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-flutter","tag-harmonyos","tag-67"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Flutter for OpenHarmony \u5b9e\u6218\uff1afile_selector \u2014 \u539f\u751f\u6587\u4ef6\u9009\u62e9\u6307\u5357 - \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\/73086.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Flutter for OpenHarmony \u5b9e\u6218\uff1afile_selector \u2014 \u539f\u751f\u6587\u4ef6\u9009\u62e9\u6307\u5357 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"Flutter for OpenHarmony \u5b9e\u6218&#xff1a;file_selector \u2014 \u539f\u751f\u6587\u4ef6\u9009\u62e9\u6307\u5357 \u524d\u8a00 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