Safe Clipboard 
For most common use cases you can use the Clipboard class built into Flutter.
Purpose
In iOS 14+ when an app reads the clipboard the system will notify the user.
In Android 12+ when an app reads the clipboard the system will notify the user.
Some applications check the clipboard on app start or resume from background to do some special action. This can cause a notification every time your app is opened.
Safe Clipboard exposes the ability to only read from the clipboard when the clipboard matches a built in pattern. This can help avoid notification spam.
Getting Started
import 'package:safe_clipboard/safe_clipboard.dart';
/// Here a common example of only accessing the clipboard when the clipboard
/// is likely to be a URL. This is often used to check if the URL is a
/// deep link to your app. iOS can speficifally check for a URL, while on
/// Android the closest thing is checking for plain text.
///
/// If the current clipboard data doesn't match the pattern, null is returned.
var clipboard = await SafeClipboard.get(
iOSDetectionPattern: iOSDetectionPattern.probableWebURL,
androidClipMimeType: AndroidClipMimeType.textPlain,
);