Flutter 通知

本地通知通常用 flutter_local_notifications。下面给出初始化、权限与触发的完整流程。

0. 依赖

dependencies:
  flutter_local_notifications: ^16.1.0

1. 初始化

final notifications = FlutterLocalNotificationsPlugin();

Future<void> initNotifications() async {
  const android = AndroidInitializationSettings('@mipmap/ic_launcher');
  const ios = DarwinInitializationSettings();
  const settings = InitializationSettings(android: android, iOS: ios);
  await notifications.initialize(settings);
}

2. iOS 权限申请

await notifications
  .resolvePlatformSpecificImplementation<IOSFlutterLocalNotificationsPlugin>()
  ?.requestPermissions(alert: true, badge: true, sound: true);

3. 发送通知

Future<void> showLocalNotification() async {
  const android = AndroidNotificationDetails(
    'channel_id',
    'default',
    importance: Importance.max,
    priority: Priority.high,
  );
  const ios = DarwinNotificationDetails();
  const details = NotificationDetails(android: android, iOS: ios);

  await notifications.show(0, '标题', '内容', details);
}

4. 常见坑点

• 渠道未配置：Android 8+ 必须配置 channel
• 权限未申请：iOS 不弹通知
• 图标缺失：Android 通知不显示

5. 实践清单

• 初始化插件
• iOS 权限申请
• Android 渠道配置
• 统一入口触发