Flutter 给组件以提示的Tooltip

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于 2021-07-08 14:57:11 发布 · 818 阅读

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本文介绍如何在Flutter中利用Tooltip为组件提供提示，包括基础Tooltip的创建和在带有Tooltip的Text组件上的应用。通过示例代码演示了如何在Web和移动端实现不同的交互效果。

当某个组件外边封装有Tooltip时，点击这个组件或鼠标放上后，会有提示信息。

有的组件本身带有tooltip属性。

/// Flutter code sample for Tooltip

// This example show a basic [Tooltip] which has a [Text] as child.
// [message] contains your label to be shown by the tooltip when
// the child that Tooltip wraps is hovered over on web or desktop. On mobile,
// the tooltip is shown when the widget is long pressed.

import 'package:flutter/material.dart';

void main() => runApp(const MyApp());

/// This is the main application widget.
class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  static const String _title = 'Flutter Code Sample';

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: _title,
      home: Scaffold(
        appBar: AppBar(title: const Text(_title)),
        body: const Center(
          child: MyStatelessWidget(),
        ),
      ),
    );
  }
}

/// This is the stateless widget that the main applica