一键抖动工具提示 [英] Flutter Tooltip on One Tap

问题描述

我想在单击而不是长按时显示工具提示.

I want to show a tooltip on a single tap, not a long tap.

谁能帮我解决这个问题?

Can anyone help me with this?

Tooltip(
  message: e.title,
  child: Card(
    semanticContainer: true,
    child: Padding(
      padding: EdgeInsets.symmetric(
          vertical: 12,
          horizontal: 12
      ),
      child: Center(
        child: Image.network(
          e.icon,
          height: 40,
        ),
      ),
    ),
  ),
)

推荐答案

作为一个选项，您可以创建简单的包装小部件
完整示例:

as an option you can create simple wrapper widget
full example:

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(home: Home());
  }
}

class Home extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text("Home")),
      body: Center(
        child: MyTooltip(
          message: 'message',
          child: Image.network('https://picsum.photos/seed/picsum/200/300', height: 40),
        ),
      ),
    );
  }
}

class MyTooltip extends StatelessWidget {
  final Widget child;
  final String message;

  MyTooltip({@required this.message, @required this.child});

  @override
  Widget build(BuildContext context) {
    final key = GlobalKey<State<Tooltip>>();
    return Tooltip(
      key: key,
      message: message,
      child: GestureDetector(
        behavior: HitTestBehavior.opaque,
        onTap: () => _onTap(key),
        child: child,
      ),
    );
  }

  void _onTap(GlobalKey key) {
    final dynamic tooltip = key.currentState;
    tooltip?.ensureTooltipVisible();
  }
}

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