{"id":73649,"date":"2026-02-08T01:42:34","date_gmt":"2026-02-07T17:42:34","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/73649.html"},"modified":"2026-02-08T01:42:34","modified_gmt":"2026-02-07T17:42:34","slug":"flutter-for-openharmony-%e5%ae%9e%e6%88%98%e4%b9%8b%e5%9f%ba%e7%a1%80%e7%bb%84%e4%bb%b6%ef%bc%9a%e7%ac%ac%e4%b8%89%e5%8d%81%e5%9b%9b%e7%af%87-tooltip-%e4%b8%8e-overlay-%e6%99%ba%e8%83%bd","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/73649.html","title":{"rendered":"Flutter for OpenHarmony \u5b9e\u6218\u4e4b\u57fa\u7840\u7ec4\u4ef6\uff1a\u7b2c\u4e09\u5341\u56db\u7bc7 Tooltip \u4e0e Overlay \u2014 \u667a\u80fd\u63d0\u793a\u4e0e\u5168\u5c40\u60ac\u6d6e\u5c42"},"content":{"rendered":"

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

Flutter for OpenHarmony \u5b9e\u6218\u4e4b\u57fa\u7840\u7ec4\u4ef6：\u7b2c\u4e09\u5341\u56db\u7bc7 Tooltip \u4e0e Overlay \u2014 \u667a\u80fd\u63d0\u793a\u4e0e\u5168\u5c40\u60ac\u6d6e\u5c42<\/h2>\n

\u524d\u8a00<\/h3>\n

\u5728\u8ffd\u6c42\u6781\u81f4\u7528\u6237\u4f53\u9a8c\u7684\u9e3f\u8499\u5e94\u7528\u5f00\u53d1\u4e2d，\u6211\u4eec\u4e0d\u4ec5\u8981\u5904\u7406\u597d\u9875\u9762\u5185\u7684\u5e38\u89c4\u5e03\u5c40，\u8fd8\u8981\u5e94\u5bf9\u90a3\u4e9b\u201c\u8df3\u51fa\u5e38\u89c4\u6d41\u7a0b\u201d\u7684 UI \u9700\u6c42\u3002\u4f8b\u5982：\u7528\u6237\u957f\u6309\u56fe\u6807\u65f6\u663e\u793a\u7684\u6587\u5b57\u89e3\u91ca（Tooltip），\u6216\u8005\u662f\u8986\u76d6\u5728\u6240\u6709\u9875\u9762\u4e4b\u4e0a\u7684\u5168\u5c40\u60ac\u6d6e\u7403\u3001\u81ea\u5b9a\u4e49\u4e0b\u62c9\u5217\u8868（Overlay）\u3002<\/p>\n

\u5728 Flutter for OpenHarmony \u5e73\u53f0\u4e0a，Tooltip \u63d0\u4f9b\u4e86\u539f\u751f\u7684\u65e0\u969c\u788d\u652f\u6301\u548c\u6c14\u6ce1\u63d0\u793a，\u800c Overlay \u5219\u662f\u6240\u6709\u5f39\u7a97\u3001\u8def\u7531\u3001\u63d0\u793a\u7684\u5e95\u5c42\u652f\u67f1\u3002\u672c\u6587\u5c06\u5e26\u5927\u5bb6\u6df1\u5ea6\u638c\u63e1\u8fd9\u4e24\u4e2a\u7ec4\u4ef6，\u89e3\u9501\u6784\u5efa\u590d\u6742\u5f39\u7a97\u4e0e\u60ac\u6d6e\u5c42\u7684\u9ad8\u9636\u6280\u80fd\u3002<\/p>\n

\n

\u4e00\u3001Tooltip：\u8f7b\u91cf\u7ea7\u6587\u5b57\u63d0\u793a<\/h3>\n

Tooltip \u7528\u4e8e\u4e3a\u56fe\u6807\u6216\u5c0f\u6309\u94ae\u63d0\u4f9b\u989d\u5916\u7684\u6587\u5b57\u8bf4\u660e，\u901a\u5e38\u7531\u957f\u6309（\u79fb\u52a8\u7aef）\u6216\u60ac\u505c（\u684c\u9762\u7aef）\u89e6\u53d1\u3002<\/p>\n

1.1 \u57fa\u7840\u7528\u6cd5<\/h4>\n

Tooltip<\/span>(<\/span>
\n message:<\/span> '\u70b9\u51fb\u641c\u7d22'<\/span><\/span>,<\/span>
\n child:<\/span> IconButton<\/span>(<\/span>
\n icon:<\/span> const<\/span> Icon<\/span>(<\/span>Icons<\/span>.<\/span>search)<\/span>,<\/span>
\n onPressed:<\/span> (<\/span>)<\/span> {<\/span>}<\/span>,<\/span>
\n )<\/span>,<\/span>
\n)<\/span><\/p>\n

1.2 \u9ad8\u7ea7\u5b9a\u5236：\u63a7\u5236\u6c14\u6ce1\u6837\u5f0f<\/h4>\n

💡 \u63d0\u793a：\u6211\u4eec\u53ef\u4ee5\u8c03\u6574\u6c14\u6ce1\u7684\u989c\u8272\u3001\u9ad8\u5ea6\u548c\u52a8\u753b\u6301\u7eed\u65f6\u95f4\u3002<\/p>\n

Tooltip<\/span>(<\/span>
\n message:<\/span> '\u8bbe\u7f6e\u4e2d\u5fc3'<\/span><\/span>,<\/span>
\n padding:<\/span> const<\/span> EdgeInsets<\/span>.<\/span>all<\/span>(<\/span>12<\/span>)<\/span>,<\/span>
\n margin:<\/span> const<\/span> EdgeInsets<\/span>.<\/span>symmetric<\/span>(<\/span>horizontal:<\/span> 20<\/span>)<\/span>,<\/span>
\n decoration:<\/span> BoxDecoration<\/span>(<\/span>
\n color:<\/span> Colors<\/span>.<\/span>blue[<\/span>800<\/span>]<\/span>,<\/span>
\n borderRadius:<\/span> BorderRadius<\/span>.<\/span>circular<\/span>(<\/span>8<\/span>)<\/span>,<\/span>
\n )<\/span>,<\/span>
\n textStyle:<\/span> const<\/span> TextStyle<\/span>(<\/span>color:<\/span> Colors<\/span>.<\/span>white,<\/span> fontSize:<\/span> 14<\/span>)<\/span>,<\/span>
\n showDuration:<\/span> const<\/span> Duration<\/span>(<\/span>seconds:<\/span> 2<\/span>)<\/span>,<\/span> \/\/ \u5f39\u51fa\u540e\u7ef4\u6301\u663e\u793a\u7684\u65f6\u95f4<\/span>
\n waitDuration:<\/span> const<\/span> Duration<\/span>(<\/span>milliseconds:<\/span> 500<\/span>)<\/span>,<\/span> \/\/ \u89e6\u53d1\u5ef6\u8fdf<\/span>
\n child:<\/span> const<\/span> Icon<\/span>(<\/span>Icons<\/span>.<\/span>settings)<\/span>,<\/span>
\n)<\/span><\/p>\n

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

\n

\u4e8c\u3001Overlay：\u6253\u7834\u5e03\u5c40\u9650\u5236\u7684\u60ac\u6d6e\u5c42<\/h3>\n

Overlay \u662f\u4e00\u4e2a\u53ef\u4ee5\u5305\u542b\u591a\u4e2a OverlayEntry \u7684 Stack\u3002\u5b83\u4e0d\u5c5e\u4e8e\u4efb\u4f55\u5177\u4f53\u7684\u9875\u9762，\u800c\u662f\u72ec\u7acb\u5b58\u5728\u4e8e Navigator \u9876\u5c42\u3002<\/p>\n

2.1 OverlayEntry \u7684\u6838\u5fc3\u673a\u5236<\/h4>\n

OverlayEntry \u672c\u8d28\u4e0a\u662f\u4e00\u4e2a\u60ac\u6d6e\u7684 Widget \u7247\u6bb5\u3002<\/p>\n

late OverlayEntry<\/span> _overlayEntry;<\/span><\/p>\n

void<\/span> _showFloatingLayer<\/span>(<\/span>BuildContext<\/span> context)<\/span> {<\/span>
\n _overlayEntry =<\/span> OverlayEntry<\/span>(<\/span>
\n builder:<\/span> (<\/span>context)<\/span> =<\/span>><\/span> Positioned<\/span>(<\/span>
\n top:<\/span> 100<\/span>,<\/span>
\n right:<\/span> 20<\/span>,<\/span>
\n child:<\/span> Material<\/span>(<\/span>
\n elevation:<\/span> 10<\/span>,<\/span>
\n borderRadius:<\/span> BorderRadius<\/span>.<\/span>circular<\/span>(<\/span>50<\/span>)<\/span>,<\/span>
\n child:<\/span> Container<\/span>(<\/span>
\n width:<\/span> 50<\/span>,<\/span> height:<\/span> 50<\/span>,<\/span>
\n color:<\/span> Colors<\/span>.<\/span>blueAccent,<\/span>
\n child:<\/span> const<\/span> Icon<\/span>(<\/span>Icons<\/span>.<\/span>help_center,<\/span> color:<\/span> Colors<\/span>.<\/span>white)<\/span>,<\/span>
\n )<\/span>,<\/span>
\n )<\/span>,<\/span>
\n )<\/span>,<\/span>
\n )<\/span>;<\/span><\/p>\n

\/\/ \u5c06 entry \u63d2\u5165\u5230\u5f53\u524d\u4e0a\u4e0b\u6587\u6240\u5c5e\u7684 Overlay \u4e2d<\/span>
\n Overlay<\/span>.<\/span>of<\/span>(<\/span>context)<\/span>.<\/span>insert<\/span>(<\/span>_overlayEntry)<\/span>;<\/span>
\n}<\/span><\/p>\n

2.2 \u79fb\u9664\u60ac\u6d6e\u5c42<\/h4>\n

\u26a0\ufe0f \u6ce8\u610f：OverlayEntry \u4e0d\u4f1a\u81ea\u52a8\u6d88\u5931，\u5fc5\u987b\u624b\u52a8\u79fb\u9664\u3002<\/p>\n

void<\/span> _removeLayer<\/span>(<\/span>)<\/span> {<\/span>
\n _overlayEntry.<\/span>remove<\/span>(<\/span>)<\/span>;<\/span>
\n}<\/span><\/p>\n

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

\n

\u4e09\u3001\u5b9e\u6218：\u6784\u5efa\u81ea\u5b9a\u4e49\u4e0b\u62c9\u83dc\u5355\u5f39\u7a97<\/h3>\n

\u4f7f\u7528 Overlay \u53ef\u4ee5\u5b8c\u7f8e\u89e3\u51b3 DropdownButton \u6837\u5f0f\u53d7\u9650\u7684\u95ee\u9898\u3002<\/p>\n

void<\/span> _toggleMenu<\/span>(<\/span>BuildContext<\/span> context,<\/span> GlobalKey<\/span> buttonKey)<\/span> {<\/span>
\n \/\/ 1. \u83b7\u53d6\u6309\u94ae\u5728\u5c4f\u5e55\u4e2d\u7684\u4f4d\u7f6e<\/span>
\n final<\/span> RenderBox<\/span> renderBox =<\/span> buttonKey.<\/span>currentContext!<\/span>.<\/span>findRenderObject<\/span>(<\/span>)<\/span> as<\/span> RenderBox<\/span>;<\/span>
\n final<\/span> offset =<\/span> renderBox.<\/span>localToGlobal<\/span>(<\/span>Offset<\/span>.<\/span>zero)<\/span>;<\/span><\/p>\n

_overlayEntry =<\/span> OverlayEntry<\/span>(<\/span>
\n builder:<\/span> (<\/span>context)<\/span> =<\/span>><\/span> Stack<\/span>(<\/span>
\n children:<\/span> [<\/span>
\n \/\/ \u80cc\u666f\u900f\u660e\u906e\u7f69，\u70b9\u51fb\u6d88\u5931<\/span>
\n GestureDetector<\/span>(<\/span>onTap:<\/span> (<\/span>)<\/span> =<\/span>><\/span> _overlayEntry.<\/span>remove<\/span>(<\/span>)<\/span>)<\/span>,<\/span>
\n Positioned<\/span>(<\/span>
\n left:<\/span> offset.<\/span>dx,<\/span>
\n top:<\/span> offset.<\/span>dy +<\/span> renderBox.<\/span>size.<\/span>height,<\/span>
\n child:<\/span> _buildDropDownMenu<\/span>(<\/span>)<\/span>,<\/span>
\n )<\/span>
\n ]<\/span>,<\/span>
\n )<\/span>,<\/span>
\n )<\/span>;<\/span>
\n Overlay<\/span>.<\/span>of<\/span>(<\/span>context)<\/span>.<\/span>insert<\/span>(<\/span>_overlayEntry)<\/span>;<\/span>
\n}<\/span><\/p>\n

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

\n

\u56db\u3001OpenHarmony \u5e73\u53f0\u9002\u914d\u5efa\u8bae<\/h3>\n

4.1 \u7a97\u53e3\u5c42\u7ea7\u7ba1\u7406 (Overlay \u7684\u6df1\u5ea6)<\/h4>\n

\u5728\u9e3f\u8499\u7cfb\u7edf\u4e0a，\u5982\u679c\u6709\u591a\u4e2a OverlayEntry，\u9700\u8981\u660e\u786e\u5b83\u4eec\u5728 Overlay \u4e2d\u7684\u5c42\u7ea7\u3002\u540e\u63d2\u5165\u7684\u4f1a\u8986\u76d6\u5148\u63d2\u5165\u7684\u3002<\/p>\n

\u2705 \u63a8\u8350\u65b9\u6848： \u5bf9\u4e8e\u9700\u8981\u6c38\u4e45\u60ac\u6d6e\u7684\u5185\u5bb9（\u5982\u5168\u5c40\u516c\u544a），\u786e\u4fdd\u5728\u9875\u9762\u8df3\u8f6c（Push\/Pop）\u65f6，\u5176 Entry \u4f9d\u7136\u80fd\u88ab\u6b63\u786e\u5f15\u7528\u6216\u4f18\u96c5\u9500\u6bc1\u3002<\/p>\n

4.2 \u89e6\u611f\u4e0e\u52a8\u753b\u53cd\u9988<\/h4>\n

\u7531\u4e8e Overlay \u5f39\u51fa\u901a\u5e38\u5e26\u6709\u4e00\u5b9a\u7684\u7a81\u5140\u611f\u3002<\/p>\n

💡 \u8c03\u4f18\u5efa\u8bae： \u914d\u5408 CompositedTransformTarget \u548c CompositedTransformFollower \u8ba9 Overlay \u7ec4\u4ef6\u80fd\u81ea\u52a8\u8ddf\u968f\u5e95\u5c42\u7ec4\u4ef6\u79fb\u52a8\/\u65cb\u8f6c，\u907f\u514d\u4f4d\u7f6e\u9519\u4f4d\u3002\u5e76\u5728\u663e\u793a\u65f6\u89e6\u53d1\u9e3f\u8499\u7cfb\u7edf\u7684 HapticFeedback\u3002<\/p>\n

4.3 \u5c4f\u853d Android \u7269\u7406\u8fd4\u56de\u952e\u7684\u5f71\u54cd<\/h4>\n

\u5728\u9e3f\u8499\u8bbe\u5907\u4e0a\u70b9\u51fb\u8fb9\u7f18\u8fd4\u56de\u624b\u52bf\u65f6\u3002<\/p>\n

\u2705 \u6700\u4f73\u5b9e\u8df5： \u5982\u679c Overlay \u4ee3\u8868\u4e00\u4e2a\u81ea\u5b9a\u4e49\u5f39\u7a97，\u5efa\u8bae\u914d\u5408 PopScope \u76d1\u542c\u8fd4\u56de\u4e8b\u4ef6，\u5728\u5173\u95ed\u9875\u9762\u524d\u5148\u68c0\u67e5\u5e76\u79fb\u9664\u6d3b\u7740\u7684 OverlayEntry\u3002<\/p>\n

\n

\u4e94\u3001\u5b8c\u6574\u793a\u4f8b\u4ee3\u7801<\/h3>\n

\u4ee5\u4e0b\u4ee3\u7801\u5b9e\u73b0\u4e86\u4e00\u4e2a\u201c\u70b9\u51fb\u56fe\u6807\u5f39\u51fa Tooltip\u201d\u4ee5\u53ca\u201c\u70b9\u51fb\u6309\u94ae\u751f\u6210\u5168\u5c4f\u60ac\u6d6e\u7ec4\u4ef6\u201d\u7684\u7efc\u5408\u793a\u4f8b\u3002<\/p>\n

import<\/span> 'package:flutter\/material.dart'<\/span><\/span>;<\/span><\/p>\n

void<\/span> main<\/span>(<\/span>)<\/span> =<\/span>><\/span> runApp<\/span>(<\/span>const<\/span> MaterialApp<\/span>(<\/span>home:<\/span> OverlayDemoPage<\/span>(<\/span>)<\/span>)<\/span>)<\/span>;<\/span><\/p>\n

class<\/span> OverlayDemoPage<\/span> extends<\/span> StatefulWidget<\/span> {<\/span>
\n const<\/span> OverlayDemoPage<\/span>(<\/span>{<\/span>super<\/span>.<\/span>key}<\/span>)<\/span>;<\/span><\/p>\n

@override<\/span>
\n State<\/span><<\/span>OverlayDemoPage<\/span>><\/span><\/span> createState<\/span>(<\/span>)<\/span> =<\/span>><\/span> _OverlayDemoPageState<\/span>(<\/span>)<\/span>;<\/span>
\n}<\/span><\/p>\n

class<\/span> _OverlayDemoPageState extends<\/span> State<\/span><<\/span>OverlayDemoPage<\/span>><\/span><\/span> {<\/span>
\n OverlayEntry<\/span>?<\/span> _entry;<\/span><\/p>\n

void<\/span> _showOverlay<\/span>(<\/span>)<\/span> {<\/span>
\n if<\/span> (<\/span>_entry !=<\/span> null<\/span>)<\/span> return<\/span>;<\/span><\/p>\n

_entry =<\/span> OverlayEntry<\/span>(<\/span>
\n builder:<\/span> (<\/span>context)<\/span> =<\/span>><\/span> Positioned<\/span>(<\/span>
\n bottom:<\/span> 100<\/span>,<\/span>
\n left:<\/span> MediaQuery<\/span>.<\/span>of<\/span>(<\/span>context)<\/span>.<\/span>size.<\/span>width \/<\/span> 2<\/span> –<\/span> 60<\/span>,<\/span>
\n child:<\/span> Material<\/span>(<\/span>
\n color:<\/span> Colors<\/span>.<\/span>transparent,<\/span>
\n child:<\/span> Container<\/span>(<\/span>
\n padding:<\/span> const<\/span> EdgeInsets<\/span>.<\/span>symmetric<\/span>(<\/span>horizontal:<\/span> 24<\/span>,<\/span> vertical:<\/span> 12<\/span>)<\/span>,<\/span>
\n decoration:<\/span> BoxDecoration<\/span>(<\/span>
\n color:<\/span> Colors<\/span>.<\/span>black87,<\/span>
\n borderRadius:<\/span> BorderRadius<\/span>.<\/span>circular<\/span>(<\/span>30<\/span>)<\/span>,<\/span>
\n )<\/span>,<\/span>
\n child:<\/span> Row<\/span>(<\/span>
\n children:<\/span> [<\/span>
\n const<\/span> Icon<\/span>(<\/span>Icons<\/span>.<\/span>flash_on,<\/span> color:<\/span> Colors<\/span>.<\/span>yellow,<\/span> size:<\/span> 20<\/span>)<\/span>,<\/span>
\n const<\/span> SizedBox<\/span>(<\/span>width:<\/span> 8<\/span>)<\/span>,<\/span>
\n const<\/span> Text<\/span>(<\/span>"\u60ac\u6d6e\u63d0\u793a\u5df2\u6fc0\u6d3b"<\/span><\/span>,<\/span> style:<\/span> TextStyle<\/span>(<\/span>color:<\/span> Colors<\/span>.<\/span>white)<\/span>)<\/span>,<\/span>
\n const<\/span> SizedBox<\/span>(<\/span>width:<\/span> 12<\/span>)<\/span>,<\/span>
\n GestureDetector<\/span>(<\/span>
\n onTap:<\/span> _hideOverlay,<\/span>
\n child:<\/span> const<\/span> Icon<\/span>(<\/span>Icons<\/span>.<\/span>close,<\/span> color:<\/span> Colors<\/span>.<\/span>white,<\/span> size:<\/span> 16<\/span>)<\/span>,<\/span>
\n )<\/span>
\n ]<\/span>,<\/span>
\n )<\/span>,<\/span>
\n )<\/span>,<\/span>
\n )<\/span>,<\/span>
\n )<\/span>,<\/span>
\n )<\/span>;<\/span><\/p>\n

Overlay<\/span>.<\/span>of<\/span>(<\/span>context)<\/span>.<\/span>insert<\/span>(<\/span>_entry!<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

void<\/span> _hideOverlay<\/span>(<\/span>)<\/span> {<\/span>
\n _entry?<\/span>.<\/span>remove<\/span>(<\/span>)<\/span>;<\/span>
\n _entry =<\/span> null<\/span>;<\/span>
\n }<\/span><\/p>\n

@override<\/span>
\n void<\/span> dispose<\/span>(<\/span>)<\/span> {<\/span>
\n _hideOverlay<\/span>(<\/span>)<\/span>;<\/span> \/\/ \u9875\u9762\u9500\u6bc1\u524d\u5fc5\u987b\u663e\u5f0f\u79fb\u9664<\/span>
\n super<\/span>.<\/span>dispose<\/span>(<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

@override<\/span>
\n Widget<\/span> build<\/span>(<\/span>BuildContext<\/span> context)<\/span> {<\/span>
\n return<\/span> Scaffold<\/span>(<\/span>
\n appBar:<\/span> AppBar<\/span>(<\/span>title:<\/span> const<\/span> Text<\/span>(<\/span>'OHOS \u63d0\u793a\u4e0e\u60ac\u6d6e\u5c42\u5b9e\u6218'<\/span><\/span>)<\/span>)<\/span>,<\/span>
\n body:<\/span> Center<\/span>(<\/span>
\n child:<\/span> Column<\/span>(<\/span>
\n mainAxisAlignment:<\/span> MainValue<\/span>.<\/span>center,<\/span>
\n children:<\/span> [<\/span>
\n const<\/span> Tooltip<\/span>(<\/span>
\n message:<\/span> "\u8fd9\u662f\u4e00\u4e2a\u957f\u6309\u53ef\u89c1\u7684 Tooltip"<\/span><\/span>,<\/span>
\n child:<\/span> Icon<\/span>(<\/span>Icons<\/span>.<\/span>info_outline,<\/span> size:<\/span> 48<\/span>,<\/span> color:<\/span> Colors<\/span>.<\/span>blue)<\/span>,<\/span>
\n )<\/span>,<\/span>
\n const<\/span> SizedBox<\/span>(<\/span>height:<\/span> 40<\/span>)<\/span>,<\/span>
\n ElevatedButton<\/span>(<\/span>
\n onPressed:<\/span> _showOverlay,<\/span>
\n child:<\/span> const<\/span> Text<\/span>(<\/span>"\u5f39\u51fa\u5168\u5c40\u53e0\u52a0\u5c42 (Overlay)"<\/span><\/span>)<\/span>,<\/span>
\n )<\/span>,<\/span>
\n ]<\/span>,<\/span>
\n )<\/span>,<\/span>
\n )<\/span>,<\/span>
\n )<\/span>;<\/span>
\n }<\/span>
\n}<\/span><\/p>\n

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

\n

\u516d\u3001\u603b\u7ed3<\/h3>\n

\u5728 Flutter for OpenHarmony \u5f00\u53d1\u4e2d，\u638c\u63e1 Tooltip \u548c Overlay \u662f\u8fc8\u5411\u9ad8\u7ea7 UI \u5f00\u53d1\u7684\u5206\u6c34\u5cad\u3002<\/p>\n

  • Tooltip：\u6700\u5ec9\u4ef7\u7684\u4ea4\u4e92\u8865\u5145，\u81ea\u5e26\u65e0\u969c\u788d\u8bed\u4e49，\u5efa\u8bae\u6240\u6709\u56fe\u6807\u6309\u94ae\u90fd\u52a0\u4e0a\u3002<\/li>\n
  • Overlay：UI \u5f00\u53d1\u7684\u201c\u4e0a\u5e1d\u6a21\u5f0f\u201d，\u5141\u8bb8\u4f60\u6253\u7834\u7ec4\u4ef6\u6811\u7684\u5c42\u7ea7\u9650\u5236\u5b9e\u73b0\u5168\u5c40\u7279\u6548\u3002<\/li>\n
  • \u5f00\u53d1\u51c6\u5219：\u5728\u9e3f\u8499\u7aef\u4f7f\u7528 Overlay \u65f6，\u4e00\u5b9a\u8981\u9ad8\u5ea6\u91cd\u89c6 dispose \u9636\u6bb5\u7684\u6e05\u7406\u5de5\u4f5c，\u9632\u6b62\u5185\u5b58\u6cc4\u6f0f\u3002<\/li>\n

    \u901a\u8fc7\u5bf9\u8fd9\u4e24\u8005\u7684\u7075\u6d3b\u8fd0\u7528，\u4f60\u53ef\u4ee5\u8ba9\u4f60\u7684\u9e3f\u8499\u5e94\u7528\u5728\u7ec6\u8282\u5904\u5145\u6ee1\u60ca\u559c\u3002<\/p>\n

    \n

    📦 \u5b8c\u6574\u4ee3\u7801\u5df2\u4e0a\u4f20\u81f3 AtomGit：flutter_ohos_examples<\/p>\n

    🌐 \u6b22\u8fce\u52a0\u5165\u5f00\u6e90\u9e3f\u8499\u8de8\u5e73\u53f0\u793e\u533a：\u5f00\u6e90\u9e3f\u8499\u8de8\u5e73\u53f0\u5f00\u53d1\u8005\u793e\u533a<\/p>\n

    \n","protected":false},"excerpt":{"rendered":"

    Flutter for OpenHarmony \u5b9e\u6218\u4e4b\u57fa\u7840\u7ec4\u4ef6：\u7b2c\u4e09\u5341\u56db\u7bc7 Tooltip \u4e0e Overlay \u2014 \u667a\u80fd\u63d0\u793a\u4e0e\u5168\u5c40\u60ac\u6d6e\u5c42
    \n\u524d\u8a00
    \n\u5728\u8ffd\u6c42\u6781\u81f4\u7528\u6237\u4f53\u9a8c\u7684\u9e3f\u8499\u5e94\u7528\u5f00\u53d1\u4e2d，\u6211\u4eec\u4e0d\u4ec5\u8981\u5904\u7406\u597d\u9875\u9762\u5185\u7684\u5e38\u89c4\u5e03\u5c40，\u8fd8\u8981\u5e94\u5bf9\u90a3\u4e9b\u201c\u8df3\u51fa\u5e38\u89c4\u6d41\u7a0b\u201d\u7684 UI \u9700\u6c42\u3002\u4f8b\u5982：\u7528\u6237\u957f\u6309\u56fe\u6807\u65f6\u663e\u793a\u7684\u6587\u5b57\u89e3\u91ca（Tooltip），\u6216\u8005\u662f\u8986\u76d6\u5728\u6240\u6709\u9875\u9762\u4e4b\u4e0a\u7684\u5168\u5c40\u60ac\u6d6e\u7403\u3001\u81ea\u5b9a\u4e49\u4e0b\u62c9\u5217\u8868&#xff08<\/p>\n","protected":false},"author":2,"featured_media":73644,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[84,2878,280],"topic":[],"class_list":["post-73649","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-android","tag-flutter","tag-harmonyos"],"yoast_head":"\nFlutter for OpenHarmony \u5b9e\u6218\u4e4b\u57fa\u7840\u7ec4\u4ef6\uff1a\u7b2c\u4e09\u5341\u56db\u7bc7 Tooltip \u4e0e Overlay \u2014 \u667a\u80fd\u63d0\u793a\u4e0e\u5168\u5c40\u60ac\u6d6e\u5c42 - \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\/73649.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\u4e4b\u57fa\u7840\u7ec4\u4ef6\uff1a\u7b2c\u4e09\u5341\u56db\u7bc7 Tooltip \u4e0e Overlay \u2014 \u667a\u80fd\u63d0\u793a\u4e0e\u5168\u5c40\u60ac\u6d6e\u5c42 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"Flutter for OpenHarmony \u5b9e\u6218\u4e4b\u57fa\u7840\u7ec4\u4ef6：\u7b2c\u4e09\u5341\u56db\u7bc7 Tooltip \u4e0e Overlay \u2014 \u667a\u80fd\u63d0\u793a\u4e0e\u5168\u5c40\u60ac\u6d6e\u5c42 \u524d\u8a00 \u5728\u8ffd\u6c42\u6781\u81f4\u7528\u6237\u4f53\u9a8c\u7684\u9e3f\u8499\u5e94\u7528\u5f00\u53d1\u4e2d，\u6211\u4eec\u4e0d\u4ec5\u8981\u5904\u7406\u597d\u9875\u9762\u5185\u7684\u5e38\u89c4\u5e03\u5c40，\u8fd8\u8981\u5e94\u5bf9\u90a3\u4e9b\u201c\u8df3\u51fa\u5e38\u89c4\u6d41\u7a0b\u201d\u7684 UI \u9700\u6c42\u3002\u4f8b\u5982：\u7528\u6237\u957f\u6309\u56fe\u6807\u65f6\u663e\u793a\u7684\u6587\u5b57\u89e3\u91ca（Tooltip），\u6216\u8005\u662f\u8986\u76d6\u5728\u6240\u6709\u9875\u9762\u4e4b\u4e0a\u7684\u5168\u5c40\u60ac\u6d6e\u7403\u3001\u81ea\u5b9a\u4e49\u4e0b\u62c9\u5217\u8868&#xff08\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/73649.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-02-07T17:42:34+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260207174228-69877984f08d0.jpg\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/73649.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/73649.html\",\"name\":\"Flutter for OpenHarmony \u5b9e\u6218\u4e4b\u57fa\u7840\u7ec4\u4ef6\uff1a\u7b2c\u4e09\u5341\u56db\u7bc7 Tooltip \u4e0e Overlay \u2014 \u667a\u80fd\u63d0\u793a\u4e0e\u5168\u5c40\u60ac\u6d6e\u5c42 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2026-02-07T17:42:34+00:00\",\"dateModified\":\"2026-02-07T17:42:34+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/73649.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/73649.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/73649.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Flutter for OpenHarmony \u5b9e\u6218\u4e4b\u57fa\u7840\u7ec4\u4ef6\uff1a\u7b2c\u4e09\u5341\u56db\u7bc7 Tooltip \u4e0e Overlay \u2014 \u667a\u80fd\u63d0\u793a\u4e0e\u5168\u5c40\u60ac\u6d6e\u5c42\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\",\"url\":\"https:\/\/www.wsisp.com\/helps\/\",\"name\":\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"description\":\"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"contentUrl\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"caption\":\"admin\"},\"sameAs\":[\"http:\/\/wp.wsisp.com\"],\"url\":\"https:\/\/www.wsisp.com\/helps\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Flutter for OpenHarmony \u5b9e\u6218\u4e4b\u57fa\u7840\u7ec4\u4ef6\uff1a\u7b2c\u4e09\u5341\u56db\u7bc7 Tooltip \u4e0e Overlay \u2014 \u667a\u80fd\u63d0\u793a\u4e0e\u5168\u5c40\u60ac\u6d6e\u5c42 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wsisp.com\/helps\/73649.html","og_locale":"zh_CN","og_type":"article","og_title":"Flutter for OpenHarmony \u5b9e\u6218\u4e4b\u57fa\u7840\u7ec4\u4ef6\uff1a\u7b2c\u4e09\u5341\u56db\u7bc7 Tooltip \u4e0e Overlay \u2014 \u667a\u80fd\u63d0\u793a\u4e0e\u5168\u5c40\u60ac\u6d6e\u5c42 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"Flutter for OpenHarmony \u5b9e\u6218\u4e4b\u57fa\u7840\u7ec4\u4ef6：\u7b2c\u4e09\u5341\u56db\u7bc7 Tooltip \u4e0e Overlay \u2014 \u667a\u80fd\u63d0\u793a\u4e0e\u5168\u5c40\u60ac\u6d6e\u5c42 \u524d\u8a00 \u5728\u8ffd\u6c42\u6781\u81f4\u7528\u6237\u4f53\u9a8c\u7684\u9e3f\u8499\u5e94\u7528\u5f00\u53d1\u4e2d，\u6211\u4eec\u4e0d\u4ec5\u8981\u5904\u7406\u597d\u9875\u9762\u5185\u7684\u5e38\u89c4\u5e03\u5c40，\u8fd8\u8981\u5e94\u5bf9\u90a3\u4e9b\u201c\u8df3\u51fa\u5e38\u89c4\u6d41\u7a0b\u201d\u7684 UI \u9700\u6c42\u3002\u4f8b\u5982：\u7528\u6237\u957f\u6309\u56fe\u6807\u65f6\u663e\u793a\u7684\u6587\u5b57\u89e3\u91ca（Tooltip），\u6216\u8005\u662f\u8986\u76d6\u5728\u6240\u6709\u9875\u9762\u4e4b\u4e0a\u7684\u5168\u5c40\u60ac\u6d6e\u7403\u3001\u81ea\u5b9a\u4e49\u4e0b\u62c9\u5217\u8868&#xff08","og_url":"https:\/\/www.wsisp.com\/helps\/73649.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2026-02-07T17:42:34+00:00","og_image":[{"url":"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260207174228-69877984f08d0.jpg"}],"author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"2 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/73649.html","url":"https:\/\/www.wsisp.com\/helps\/73649.html","name":"Flutter for OpenHarmony \u5b9e\u6218\u4e4b\u57fa\u7840\u7ec4\u4ef6\uff1a\u7b2c\u4e09\u5341\u56db\u7bc7 Tooltip \u4e0e Overlay \u2014 \u667a\u80fd\u63d0\u793a\u4e0e\u5168\u5c40\u60ac\u6d6e\u5c42 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","isPartOf":{"@id":"https:\/\/www.wsisp.com\/helps\/#website"},"datePublished":"2026-02-07T17:42:34+00:00","dateModified":"2026-02-07T17:42:34+00:00","author":{"@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41"},"breadcrumb":{"@id":"https:\/\/www.wsisp.com\/helps\/73649.html#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wsisp.com\/helps\/73649.html"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.wsisp.com\/helps\/73649.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.wsisp.com\/helps"},{"@type":"ListItem","position":2,"name":"Flutter for OpenHarmony \u5b9e\u6218\u4e4b\u57fa\u7840\u7ec4\u4ef6\uff1a\u7b2c\u4e09\u5341\u56db\u7bc7 Tooltip \u4e0e Overlay \u2014 \u667a\u80fd\u63d0\u793a\u4e0e\u5168\u5c40\u60ac\u6d6e\u5c42"}]},{"@type":"WebSite","@id":"https:\/\/www.wsisp.com\/helps\/#website","url":"https:\/\/www.wsisp.com\/helps\/","name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","description":"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41","name":"admin","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/","url":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","contentUrl":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","caption":"admin"},"sameAs":["http:\/\/wp.wsisp.com"],"url":"https:\/\/www.wsisp.com\/helps\/author\/admin"}]}},"_links":{"self":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/73649","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/comments?post=73649"}],"version-history":[{"count":0,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/73649\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media\/73644"}],"wp:attachment":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media?parent=73649"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/categories?post=73649"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/tags?post=73649"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/topic?post=73649"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}