MaikuB/flutter_local_notifications

iOS provisional notification permission not working

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#2235 opened on Feb 3, 2024

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help wanted

Description

Describe the bug Requesting provisional permissions returns false immediatly and does display a system prompt.

To Reproduce

  1. Initialize the plugin using the following ios settings. Note that this call also returns false.
final DarwinInitializationSettings iosSettings =
        const DarwinInitializationSettings(
      requestAlertPermission: false,
      requestSoundPermission: false,
      requestBadgePermission: false,
      requestProvisionalPermission: true,
      requestCriticalPermission: false,
      defaultPresentAlert: false,
      defaultPresentSound: false,
      defaultPresentBadge: false,
      defaultPresentBanner: false,
      defaultPresentList: false,
      onDidReceiveLocalNotification: null,
      notificationCategories: const <DarwinNotificationCategory>[],
    );
  1. Request permission later on using the following API:
requestPermissions(
  sound: false,
  alert: false,
  badge: false,
  provisional: true,
  critical: false,
);
  1. Receive a false response and notifications cannot be scheduled.

Expected behavior Provisional notifications should be granted automatically as described in the docs here.

Maybe related: This line in the code comments mentions needing special approval from Apple to use provisional permissions. But I can't see any references to it at the linked page.

Contributor guide

Tech stack
dartflutterios
Domain
mobileapi
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Flutter plugin developmentiOS notification APIs
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
Investigate the native iOS plugin code for provisional permission handling. The issue points to the Dart initialization settings (line 40 of initialization settings.dart) but the bug likely lies in the iOS implementation. Check the Swift/Objective C code that maps the provisional flag to the UNAuthorizationOptionProvisional. Compare with Apple's documentation for requesting provisional permissions. Consider testing on a real device as simulators may behave differently. Look at the repository's iOS plugin directory for the relevant requestPermission method.