A Flutter plugin to use iOS 16.1+ Live Activities & iPhone 14 Pro Dynamic Island features.

🧐 What is it ?

This plugin use iOS ActivityKit API.

live_activities can be used to show dynamic live notification & implement dynamic island feature on the iPhone 14 Pro / Max 🏝️

⚠️ live_activities is only intended to use with iOS 16.1+ ! It will simply do nothing on other platform & < iOS 16.1

👻 Getting started

Due to some technical restriction, it's not currently possible to only use Flutter 🫣.

You need to implement in your Flutter iOS project a Widget Extension & develop in Swift/Objective-C your own Live Activity / Dynamic Island design.

ℹ️ You can check into the example repository for a full example app using Live Activities & Dynamic Island

• 📱 Native

  • Open the Xcode workspace project ios/Runner.xcworkspace.
  • Click on File -> New -> Target...
    • Select Widget Extension & click on Next.
    • Specify the product name (MyAppWidget for eg.) & be sure to select "Runner" in "Embed in Application" dropdown.
    • Click on Finish.
    • When selecting Finish, an alert will appear, you will need to click on Activate.

• Enable push notification capabilities on the main Runner app only!.

• Enable live activity by adding this line in Info.plist for both Runner & your Widget Extension.

<key>NSSupportsLiveActivities</key>
<true/>

• Create App Group for both Runner & your Widget Extension.

ℹ️ You can check on this resource or here for more native informations.

• In your extension, you need to create an ActivityAttributes called EXACTLY LiveActivitiesAppAttributes (if you rename, activity will be created but not appear!)

struct LiveActivitiesAppAttributes: ActivityAttributes, Identifiable {
  public typealias LiveDeliveryData = ContentState // don't forget to add this line, otherwise, live activity will not display it.

  public struct ContentState: Codable, Hashable { }
  
  var id = UUID()
}

• Create an UserDefaults with your group id to access Flutter data in your Swift code.

// Create shared default with custom group
let sharedDefault = UserDefaults(suiteName: "YOUR_GROUP_ID")!

struct FootballMatchApp: Widget {
  var body: some WidgetConfiguration {
    ActivityConfiguration(for: LiveActivitiesAppAttributes.self) { context in
      // create your live activity widget extension here
      // to access Flutter properties:
      let myVariableFromFlutter = sharedDefault.string(forKey: "myVariableFromFlutter")!

      // [...]
    }
  }
}

• 💙 Flutter

  • Import the plugin.

  import 'package:live_activities/live_activities.dart';

  • Initialize the Plugin by passing the created App Group Id (created above).

  final _liveActivitiesPlugin = LiveActivities();
  _liveActivitiesPlugin.init(appGroupId: "YOUR_CREATED_APP_ID");

  • Create your dynamic activity.

  final Map<String, dynamic> activityModel = {
    'name': 'Margherita',
    'ingredient': 'tomato, mozzarella, basil',
    'quantity': 1,
  };
  
  _liveActivitiesPlugin.createActivity(activityModel);

  You can pass all type of data you want but keep it mind it should be compatible with UserDefaults

  
  

Access Flutter basic data from Native 🧵

• In your Swift extension, you need to create an UserDefaults instance to access data:

let sharedDefault = UserDefaults(suiteName: "YOUR_CREATED_APP_ID")!

⚠️ Be sure to use the SAME group id in your Swift extension and your Flutter app!

• Access to your typed data:

let pizzaName = sharedDefault.string(forKey: "name")! // put the same key as your Dart map
let pizzaPrice = sharedDefault.float(forKey: "price")
let quantity = sharedDefault.integer(forKey: "quantity")
// [...]

Access Flutter picture from Native 🧵

• In your map, send a LiveActivityImageFromAsset or LiveActivityImageFromUrl object:

final Map<String, dynamic> activityModel = {
  'assetKey': LiveActivityImageFromAsset('assets/images/pizza_chorizo.png'),
  'url': LiveActivityImageFromUrl(
    'https://cdn.pixabay.com/photo/2015/10/01/17/17/car-967387__480.png',
    resizeFactor: 0.3,
  ),
};

_liveActivitiesPlugin.createActivity(activityModel);

ℹ️ Use LiveActivityImageFromAsset to load an image from your Flutter asset.

ℹ️ Use LiveActivityImageFromUrl to load an image from an external url.

⚠️ Image need to be in a small resolution to be displayed in your live activity/dynamic island, you can use resizeFactor to automatically resize the image 👍.

• In your Swift extension, display the image:

if let assetImage = sharedDefault.string(forKey: "assetKey"), // <-- Put your key here
  let uiImage = UIImage(contentsOfFile: shop) {
  Image(uiImage: uiImage)
      .resizable()
      .frame(width: 53, height: 53)
      .cornerRadius(13)
} else {
  Text("Loading")
}

Communicate over Native 🧵 and Flutter 💙

In order to pass some useful data between your native live activity / dynamic island with your Flutter app you just need to setup URL scheme.

• Add a custom url scheme in Xcode by navigating to Runner > Runner > URL Types > URL Schemes

• In your Swift code, just create a new link and open to your custom URL Scheme

Link(destination: URL(string: "la://my.app/order?=123")!) { // Replace "la" with your scheme
  Text("See order")
}

⚠️ Don't forget to put the URL Scheme you have typed in the previous step.

• In your Flutter App, you just need to listen on the url scheme Scheme

_liveActivitiesPlugin.urlSchemeStream().listen((schemeData) {
  // do what do you want here 🤗
});

Update Live Activity with push notification 🎯

You can update live activity directly in your app using the updateActivity() method, but if your app was killed or in the background, you can’t update the notification...

To do this, you can update it using Push Notification on a server.

• Get the push token:
  • Listen on the activity updates (recommended):

    _liveActivitiesPlugin.activityUpdateStream.listen((event) {
      event.map(
        active: (activity) {
          // Get the token
          print(activity.activityToken);
        },
        ended: (activity) {},
        unknown: (activity) {},
      );
    });

  • Get directly the push token (not recommended, because the token may change in the future):

    final activityToken = await _liveActivitiesPlugin.getPushToken(_latestActivityId!);
    print(activityToken);

• Update your activity with the token on your server (more information can be found here).

📘 Documentation

Name	Description	Returned value
.init()	Initialize the Plugin by providing an App Group Id (see above)	Future When the plugin is ready to create/update an activity
.createActivity()	Create an iOS live activity	String The activity identifier
.updateActivity()	Update the live activity data by using the activityId provided	Future When the activity was updated
.endActivity()	End the live activity by using the activityId provided	Future When the activity was ended
.getAllActivitiesIds()	Get all activities ids created	Future<List<String>> List of all activities ids
.endAllActivities()	End all live activities of the app	Future When all activities was ended
.areActivitiesEnabled()	Check if live activities feature are supported & enabled	Future<bool> Live activities supported or not
.getActivityState()	Get the activity current state	Future<LiveActivityState> An enum to know the status of the activity (active, dismissed or ended)
.getPushToken()	Get the activity push token synchronously (prefer using activityUpdateStream instead to keep push token up to date)	String? The activity push token (can be null)
.urlSchemeStream()	Subscription to handle every url scheme (ex: when the app is opened from a live activity / dynamic island button, you can pass data)	Future<UrlSchemeData> Url scheme data which handle scheme url host path queryItems
.dispose()	Remove all pictures passed in the AppGroups directory in the current session, you can use the force parameters to remove all pictures	Future Picture removed
.activityUpdateStream	Get notified with a stream about live activity push token & status	Stream<ActivityUpdate> Status updates for new push tokens or when the activity ends

👥 Contributions

Contributions are welcome. Contribute by creating a PR or create an issue 🎉.

🎯 Roadmap

• Inject a Widget inside the notification with Flutter Engine ?
• Support push token.
• Pass media between extension & Flutter app.
• Support multiple type instead of String (Date, Number etc.).
• Pass data across native dynamic island and Flutter app.
• Pass data across native live activity notification and Flutter app.
• Cancel all activities.
• Get all activities ids.
• Check if live activities are supported.