How to exclude Notes and Reminders apps from the UIActivityViewController?

Swift 2.2 version. Tested in iOS9.3. Works.

UPDATE and got approved by App Store Review.

import UIKit

class ActivityViewController: UIActivityViewController {

    func _shouldExcludeActivityType(activity: UIActivity) -> Bool {
        let activityTypesToExclude = [
            "com.apple.reminders.RemindersEditorExtension",
            "com.apple.mobilenotes.SharingExtension",
            UIActivityTypeOpenInIBooks,
            UIActivityTypePrint,
            UIActivityTypeAssignToContact,
            "com.google.Drive.ShareExtension"
        ]

        if let actType = activity.activityType() {
            if activityTypesToExclude.contains(actType) {
                return true
            }
            else if super.excludedActivityTypes != nil {
                return super.excludedActivityTypes!.contains(actType)
            }
        }
        return false
    }

}

Also useful

 "com.apple.mobileslideshow.StreamShareService"

gets rid of the "cloud" one.

If you don't want to subclass UIActivityViewController you can include them in your .excludedActivityTypes when creating your UIActivityViewController.

Objective C:

UIActivityViewController *activityController = [[UIActivityViewController alloc]initWithActivityItems:sharingItems applicationActivities:nil];
activityController.excludedActivityTypes = @[
    UIActivityTypeAssignToContact,
    UIActivityTypePrint,
    UIActivityTypeAddToReadingList,
    UIActivityTypeSaveToCameraRoll,
    UIActivityTypeOpenInIBooks,
    @"com.apple.mobilenotes.SharingExtension",
    @"com.apple.reminders.RemindersEditorExtension"
];
[self presentViewController:activityController animated:YES completion:nil];

Swift 4.2:

let activityController = UIActivityViewController(activityItems: sharingItems, applicationActivities: nil)
activityController.excludedActivityTypes = [
    UIActivity.ActivityType.assignToContact,
    UIActivity.ActivityType.print,
    UIActivity.ActivityType.addToReadingList,
    UIActivity.ActivityType.saveToCameraRoll,
    UIActivity.ActivityType.openInIBooks,
    UIActivity.ActivityType(rawValue: "com.apple.reminders.RemindersEditorExtension"),
    UIActivity.ActivityType(rawValue: "com.apple.mobilenotes.SharingExtension")]
present(activityController, animated: true, completion: nil)