Flutter:显示文本选择工具栏onTap，而不是长按

dependencies:
  flutter:
    sdk: flutter
  fluttertoast: ^8.0.8

GestureDetector(
  onTap: () {
    showTextSelectionToolbar(context);
  },
  child: Text('这是一个可选择的文本'),
),

import 'package:fluttertoast/fluttertoast.dart';

void showTextSelectionToolbar(BuildContext context) {
  final RenderBox currentWidget = context.findRenderObject() as RenderBox;
  final RenderBox overlay = Overlay.of(context)!.context.findRenderObject() as RenderBox;
  final RelativeRect position = RelativeRect.fromSize(
    currentWidget.localToGlobal(Offset.zero, ancestor: overlay),
    currentWidget.size,
    overlay.size,
  );

  // 创建一个文本选择工具栏
  final List<PopupMenuEntry<String>> items = <PopupMenuEntry<String>>[
    const PopupMenuItem<String>(
      value: 'copy',
      child: Text('复制'),
    ),
    const PopupMenuItem<String>(
      value: 'paste',
      child: Text('粘贴'),
    ),
    const PopupMenuItem<String>(
      value: 'cut',
      child: Text('剪切'),
    ),
  ];

  showMenu<String>(
    context: context,
    position: position,
    items: items,
  ).then((String? value) {
    if (value == 'copy') {
      Fluttertoast.showToast(msg: '已复制');
    } else if (value == 'paste') {
      Fluttertoast.showToast(msg: '已粘贴');
    } else if (value == 'cut') {
      Fluttertoast.showToast(msg: '已剪切');
    }
  });
}