Flutter Permission handler Plugin

A permissions plugin for Flutter. This plugin provides a cross-platform (iOS, Android) API to request and check permissions.

Unloc customizations

Removed all permission strategies except ContactPermissionStrategy for iOS. This in order to avoid app store issues like this:

The app’s Info.plist file should contain a NSCalendarsUsageDescription key with a user-facing purpose string explaining clearly and completely why your app needs the data.

Features

• Check if a permission is granted.
• Request permission for a specific feature.
• Open app settings so the user can enable a permission.
• Show a rationale for requesting permission (Android).

Usage

To use this plugin, add permission_handler as a dependency in your pubspec.yaml file. For example:

dependencies:
  permission_handler: '^2.2.0'

NOTE: There’s a known issue with integrating plugins that use Swift into a Flutter project created with the Objective-C template. See issue Flutter#16049 for help on integration.

API

Requesting permission

import 'package:permission_handler/permission_handler.dart';

Map<PermissionGroup, PermissionStatus> permissions = await PermissionHandler().requestPermissions([PermissionGroup.contacts]);

Checking permission

import 'package:permission_handler/permission_handler.dart';

PermissionStatus permission = await PermissionHandler().checkPermissionStatus(PermissionGroup.contacts);

Checking service status

import 'package:permission_handler/permission_handler.dart';

ServiceStatus serviceStatus = await PermissionHandler().checkServiceStatus(PermissionGroup.location);

Checking the service status only makes sense for the PermissionGroup.location on Android and the PermissionGroup.location, PermissionGroup.locationWhenInUser, PermissionGroup.locationAlways or PermissionGroup.sensors on iOS. All other permission groups are not backed by a separate service and will always return ServiceStatus.notApplicable.

Open app settings

import 'package:permission_handler/permission_handler.dart';

bool isOpened = await PermissionHandler().openAppSettings();

Show a rationale for requesting permission (Android only)

import 'package:permission_handler/permission_handler.dart';

bool isShown = await PermissionHandler().shouldShowRequestPermissionRationale(PermissionGroup.contacts);

This will always return false on iOS.

List of available permissions

Defines the permission groups for which permissions can be checked or requested.

enum PermissionGroup {
  /// The unknown permission only used for return type, never requested
  unknown,

  /// Android: Calendar
  /// iOS: Calendar (Events)
  calendar,

  /// Android: Camera
  /// iOS: Photos (Camera Roll and Camera)
  camera,

  /// Android: Contacts
  /// iOS: AddressBook
  contacts,

  /// Android: Fine and Coarse Location
  /// iOS: CoreLocation (Always and WhenInUse)
  location,

  /// Android: Microphone
  /// iOS: Microphone
  microphone,

  /// Android: Phone
  /// iOS: Nothing
  phone,

  /// Android: Nothing
  /// iOS: Photos
  photos,

  /// Android: Nothing
  /// iOS: Reminders
  reminders,

  /// Android: Body Sensors
  /// iOS: CoreMotion
  sensors,

  /// Android: Sms
  /// iOS: Nothing
  sms,

  /// Android: External Storage
  /// iOS: Nothing
  storage,

  /// Android: Microphone
  /// iOS: Speech
  speech,

  /// Android: Fine and Coarse Location
  /// iOS: CoreLocation - Always
  locationAlways,

  /// Android: Fine and Coarse Location
  /// iOS: CoreLocation - WhenInUse
  locationWhenInUse,

  /// Android: None
  /// iOS: MPMediaLibrary
  mediaLibrary
}

Status of the permission

Defines the state of a permission group

enum PermissionStatus {
  /// Permission to access the requested feature is denied by the user.
  denied,

  /// Permissions to access the feature is granted by the user but the feature is disabled.
  disabled,

  /// Permission to access the requested feature is granted by the user.
  granted,

  /// The user granted restricted access to the requested feature (only on iOS).
  restricted,

  /// Permission is in an unknown state
  unknown
}

Overview of possible service statuses

Defines the state of the backing service for the supplied permission group

/// Defines the state of a service related to the permission group
enum ServiceStatus {
  /// The unknown service status indicates the state of the service could not be determined.
  unknown,

  /// There is no service for the supplied permission group.
  notApplicable,

  /// The service for the supplied permission group is disabled.
  disabled,

  /// The service for the supplied permission group is enabled.
  enabled
}

Issues

Please file any issues, bugs or feature request as an issue on our GitHub page.

Want to contribute

If you would like to contribute to the plugin (e.g. by improving the documentation, solving a bug or adding a cool new feature), please carefully review our contribution guide and send us your pull request.

Download Flutter Permission handler Plugin Source code on GitHub

https://github.com/Unloc/flutter-permission-handler