Package to check for and ask for Notification Permissions on iOS and Android.

Future<PermissionStatus> permissionStatus =
    NotificationPermissions.getNotificationPermissionStatus();

This method will return an enum with the following values:

enum PermissionStatus {
  provisional, // iOS Only
	granted,
	unknown,
	denied
}

In iOS, a permission is unknown when the user hasn’t accepted or refuse the notification permissions. In Android this state will never occur, since the permission will be granted by default and it will be denied if the user goes to the app settings and turns off notifications for the app. The provisional status will also offer the same behavior.

If the PermissionStatus is denied or unknown, we can ask the user for the Permissions:

Future<PermissionStatus> permissionStatus = NotificationPermissions.requestNotificationPermissions({NotificationSettingsIos iosSettings, bool openSettings});

On Android, if the permission is denied, this method will open the app settings.

In iOS, if the permission is unknown or provisional, it will show an alert window asking the user for the permission. On the other hand, if the permission is denied it has the same behaviour as Android, opening the app settings. Also in iOS if you set openSettings to false settings window won't be opened. You will get denied status. NotificationPermissions.requestNotificationPermissions returns status after user select answer from native permission popup.

Note: if the permission is granted, this method will not do anything.

If your project is in Objective-C, you will have to do the changes referenced in this SO post in order to solve the issue:

'notification_permissions/notification_permissions-Swift.h' file not found
    #import <notification_permissions/notification_permissions-Swift.h>
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    1 error generated.

Add use_frameworks! in target Runner in your (YOUR_PROJECT)/ios/Podfile

target 'Runner' do
  use_frameworks! # Add here

Special thanks to fedecastelli for helping me in the Swift Code!