将flutter_just_toast添加到Pubspecs中的依赖项中。yaml文件。

依赖关系:

flutter_just_toast: ^1.0.1

接下来将包导入到你的类中:

import 'package:flutter_just_toast/flutter_just_toast.dart';

用一条消息实现Toast:

Toast.show(message: "Your toast message",
    duration: Delay.SHORT,
    textColor: Colors.black);

要显示Toast消息，您可以使用FlutterToast插件。要使用这个插件，你必须:

将此依赖项添加到您的pubspec中。Yaml文件:fluttertoast: ^8.0.8 要获取包，必须运行以下命令:$ flutter packages get 导入包:导入'package:fluttertoast/fluttertoast.dart';

像这样使用它:

Fluttertoast.showToast(
    msg: "your message",
    toastLength: Toast.LENGTH_SHORT,
    gravity: ToastGravity.BOTTOM // Also possible "TOP" and "CENTER"
    backgroundColor: "#e74c3c",
    textColor: '#ffffff');

要了解更多信息，请查看这个。

更新:Scaffold.of(上下文)。showSnackBar在Flutter 2.0.0中已弃用(稳定)

你可以使用ScaffoldMessenger.of(context)访问父类ScaffoldMessengerState。

然后做一些类似的事情

ScaffoldMessenger.of(context).showSnackBar(SnackBar(
      content: Text("Sending Message"),
    ));

零食条是材料设计的官方“吐司”。看到间小吃店。

下面是一个完整的例子:

import 'package:flutter/material.dart';

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

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

class Home extends StatelessWidget {
  const Home({
    Key key,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Snack bar'),
      ),
      body: Center(
        child: RaisedButton(
          onPressed: () => _showToast(context),
          child: const Text('Show toast'),
        ),
      ),
    );
  }

  void _showToast(BuildContext context) {
    final scaffold = ScaffoldMessenger.of(context);
    scaffold.showSnackBar(
      SnackBar(
        content: const Text('Added to favorite'),
        action: SnackBarAction(label: 'UNDO', onPressed: scaffold.hideCurrentSnackBar),
      ),
    );
  }
}

Importcupertino_icons: ^0.1.2并编写以下代码:

showToast(BuildContext context, String message) {
  showDialog(
    context: context,
    builder: (BuildContext context) {
      return CupertinoAlertDialog(
        title: Text(
          "Name of App",
        ),
        content: Text(
          message,
        ),
        actions: [
          CupertinoButton(
            child: Text("OK"),
            onPressed: () {
              Navigator.of(context).pop();
            },
          )
        ],
      );
    },
  );
});

将flutter_just_toast添加到Pubspecs中的依赖项中。yaml文件。

依赖关系:

flutter_just_toast: ^1.0.1

接下来将包导入到你的类中:

import 'package:flutter_just_toast/flutter_just_toast.dart';

用一条消息实现Toast:

Toast.show(message: "Your toast message",
    duration: Delay.SHORT,
    textColor: Colors.black);

您可以使用飘动吐司包装。为此，将其添加到pubspec中。Yaml文件如下:

dependencies:
  fluttertoast: ^8.0.8

然后在需要吐司的.dart文件中导入这个包并编写代码。

例如，参考以下代码:

import 'package:flutter/material.dart';
import 'package:fluttertoast/fluttertoast.dart';

class ToastExample extends StatefulWidget {
    @override
    _ToastExampleState createState() {
      return _ToastExampleState();
    }
  }

  class _ToastExampleState extends State {
    void showToast() {
      Fluttertoast.showToast(
          msg: 'This is flutterToast example', // Message
          toastLength: Toast.LENGTH_SHORT,    // toast length
          gravity: ToastGravity.CENTER,      // position
          timeInSecForIos: 1,               // duaration
          backgroundColor: Colors.red,     // background color
          textColor: Colors.white         // text color
      );
    }

    @override
    Widget build(BuildContext context) {
      return MaterialApp(
        title: 'Toast Tutorial',
        home: Scaffold(
            appBar: AppBar(
              title: Text('Toast Tutorial'),
            ),
            body: Padding(
              padding: EdgeInsets.all(15.0),
              child: Center(
                child: RaisedButton(
                  child: Text('Show Toast'),
                  onPressed: showToast,
                ),
              ),
            )
        ),
      );
    }
  }

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