如何使用flutter在列表视图中动态添加通知？

使用Flutter在列表视图中动态添加通知的步骤如下：

首先，在Flutter项目中添加所需的依赖。在项目的pubspec.yaml文件中，添加flutter_local_notifications插件的依赖，然后运行flutter packages get获取依赖包。

dependencies:
  flutter:
    sdk: flutter
  flutter_local_notifications: ^1.4.4+4

创建一个通知初始化的类。在Flutter应用的入口文件中，创建一个NotificationHelper类，用于初始化通知配置。

import 'package:flutter_local_notifications/flutter_local_notifications.dart';

class NotificationHelper {
  static FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin =
      FlutterLocalNotificationsPlugin();

  static void initialize() async {
    const AndroidInitializationSettings initializationSettingsAndroid =
        AndroidInitializationSettings('app_icon');
    final InitializationSettings initializationSettings =
        InitializationSettings(android: initializationSettingsAndroid);
    await flutterLocalNotificationsPlugin.initialize(initializationSettings);
  }
}

添加通知权限和图标。在Android平台上，需要在AndroidManifest.xml文件中添加通知权限和指定应用的图标。

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.your_app">
    <uses-permission android:name="android.permission.VIBRATE" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />

    <application
        android:name="io.flutter.app.FlutterApplication"
        android:icon="@mipmap/ic_launcher">
        <!-- 添加通知权限 -->
        <meta-data
            android:name="com.google.firebase.messaging.default_notification_channel_id"
            android:value="@string/default_notification_channel_id" >
        </meta-data>
        <meta-data
            android:name="com.google.firebase.messaging.default_notification_icon"
            android:resource="@drawable/ic_stat_ic_notification">
        </meta-data>

        <activity
            android:name=".MainActivity"
            android:launchMode="singleTop"
            android:theme="@style/LaunchTheme"
            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
            android:hardwareAccelerated="true"
            android:windowSoftInputMode="adjustResize">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>

        <!-- 添加启动通知的接收器 -->
        <receiver android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationBootReceiver">
            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED"></action>
                <action android:name="android.intent.action.MY_PACKAGE_REPLACED"></action>
                <action android:name="android.intent.action.QUICKBOOT_POWERON"></action>
                <category android:name="android.intent.category.DEFAULT"></category>
            </intent-filter>
        </receiver>
        <receiver android:name="com.dexterous.flutterlocalnotifications.ScheduledNotificationReceiver" />
    </application>
</manifest>

创建列表视图并动态添加通知。在Flutter的页面中，创建一个ListView组件，并通过点击按钮的事件来动态添加通知。

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

class NotificationListView extends StatefulWidget {
  @override
  _NotificationListViewState createState() => _NotificationListViewState();
}

class _NotificationListViewState extends State<NotificationListView> {
  FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin =
      FlutterLocalNotificationsPlugin();
  List<String> notifications = [];

  @override
  void initState() {
    super.initState();
    NotificationHelper.initialize();
  }

  Future<void> _showNotification() async {
    const AndroidNotificationDetails androidPlatformChannelSpecifics =
        AndroidNotificationDetails(
      'channel_id',
      'channel_name',
      'channel_description',
      importance: Importance.max,
      priority: Priority.high,
    );
    const NotificationDetails platformChannelSpecifics =
        NotificationDetails(android: androidPlatformChannelSpecifics);
    await flutterLocalNotificationsPlugin.show(
      0,
      'New notification',
      'This is a new notification',
      platformChannelSpecifics,
      payload: 'item id',
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Notification List'),
      ),
      body: ListView.builder(
        itemCount: notifications.length,
        itemBuilder: (context, index) {
          return ListTile(
            title: Text(notifications[index]),
          );
        },
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          setState(() {
            notifications.add('New notification');
            _showNotification();
          });
        },
        child: Icon(Icons.add),
      ),
    );
  }
}

这样，当点击FloatingActionButton按钮时，会动态在列表视图中添加通知，并在通知栏中展示对应的通知内容。

注意：以上代码仅展示了如何在列表视图中动态添加通知的基本步骤，具体的界面布局和通知内容可根据实际需求进行调整。另外，为了实现通知的显示和操作，还需在iOS平台上进行相关配置。具体配置方式可参考flutter_local_notifications插件的官方文档。

参考链接：