Implementation of Native Cross-Platform Notifications (Windows, Android, iOS, and macOS)

[KeimaSenpai]

Hello Flet team,

I would like to propose the implementation of native cross-platform notifications within the Flet library. Currently, many applications require the ability to send notifications when a message is received or when a significant event occurs. It would be very useful to have a component or API that allows integrating notifications in the following manner:

• Windows: Notifications that appear in the system's action center or side panel.
• Android: Integration with the device's notification system to display alerts in the notification bar.
• iOS: Use of push or local notifications integrated with the iPhone’s notification center.
• macOS: Notifications that appear in the system's notification center.

Arguments and Benefits

1. Consistency in User Experience:
   It will help developers create applications that follow the native guidelines and behaviors of each platform, providing a more integrated and professional user experience.

2. Time Savings in Development:
   With a unified API for notifications, developers can reduce the need to write and maintain platform-specific code, allowing them to focus on other application functionalities.

3. Enhanced Interactivity:
   Real-time notifications are essential for messaging apps, alerts, or reminders, improving communication with the user and increasing the responsiveness of applications developed with Flet.

4. Ease of Integration and Maintenance:
   A native, centralized solution in Flet would eliminate the dependency on external libraries or third-party services for handling notifications, simplifying the integration process and long-term maintenance.

Proposed Usage Example

It would be ideal for the implementation to offer a simple API, such as:

import flet as ft

def on_notification_click(event):
    print("Notification clicked")

ft.send_notification(
    title="New Message",
    message="You have received a new message.",
    on_click=on_notification_click,
    platform="windows"  # or "android", "ios", "macos"
)

This API could be extended with options to customize the icon, priority, sound, and other parameters specific to each operating system.

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I hope this proposal will be considered for future versions of Flet. Thank you very much for your effort and dedication in developing this excellent library.

[ndonkoHenri]

Sub to #516