小编flu*_*alk的帖子

目前我想在用户设备上为“复制到剪贴板”制作事件。

当用户单击“列表视图前导图标.内容副本”时，文本应存储在他的设备剪贴板上。

请任何人都可以帮助我吗？

Widget _buildListItem(BuildContext context, DocumentSnapshot data) {
    final record = Record.fromSnapshot(data);

    return Padding(
      key: ValueKey(record.name),
      padding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 8.0),
      child: Container(
        decoration: BoxDecoration(
          border: Border.all(color: Colors.grey),
          borderRadius: BorderRadius.circular(5.0),
        ),
        child: ListTile(
          leading: Icon(Icons.content_copy),
          title: Text(record.group),
          subtitle: Text(record.name),
          // can anyone help me how to create event on onTap action.
          // When user click then text copy to clipboard on his device. 
             onTap: () {
             debugPrint ("Tapped");
          },
          ),
      ),
    );
  }
}

class Record {
  final …

使用一个浮动操作按钮创建了计数器应用程序。

如果我想再增加一个按钮来重置计数器，我该在底部栏中添加第二个浮动操作按钮吗？

我也必须在void部分添加任何方法，或者是否有可用的重置计数器功能？

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Counter App',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'Counter App'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

 @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: …