iOS. In iOS, users must explicitly sign up for push when they download your app . On iOS devices, push notifications appear in Apple’s Notification Center, which a user can access by swiping down from the top of their screen.
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Displaying a notification in Flutter To display a notification, we need to create a platform-specific NotificationDetails instance , which takes in arguments that are unique to each platform. AndroidNotificationDetails handles the configuration of notifications in Android devices.
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How to Add Push Notifications to a Flutter App using Firebase Cloud Messaging
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