is it possible to update live activity view after performing LiveactivityIntent action?

Question

I need to update the live activity's view (like updating the text or remove and add buttons) after performing the intent action. For widget we have timeline mechanism to reload the UI. In apple document they mentioned that Liveactivity follows same life cycle as widget.

Live Activities don’t use a timeline mechanism to update their content. However, they use WidgetKit and a widget extension with a similar cycle of view archiving and decoding.

Not able to find a method to update live activities UI.

Answer 1

it is possible to update the Live Activity view after performing a LiveActivityIntent action. However, there is no built-in mechanism for doing this. You will need to implement your own solution.

One way to do this is to use the ActivityKit framework. The ActivityKit framework provides a way to update the dynamic data of an active Live Activity. You can use this to update the text or buttons in the Live Activity view.

Another way to update the Live Activity view is to use ActivityKit push notifications. When you start a Live Activity, you can specify that you want to receive push notifications for updates to the Live Activity. When you receive a push notification, you can use it to update the Live Activity view.

Here is an example of how to update the Live Activity view using ActivityKit:

import ActivityKit

func updateLiveActivityView(activity: Activity) {
  // Get the dynamic data for the Live Activity.
  let dynamicData = activity.dynamicData

  // Update the text in the Live Activity view.
  dynamicData["text"] = "New text"

  // Update the buttons in the Live Activity view.
  dynamicData["buttons"] = ["New button"]

  // Update the Live Activity with the new dynamic data.
  activity.update(dynamicData)
}

This code will update the text and buttons in the Live Activity view

If you are using ActivityKit push notifications, you will need to implement a way to receive and handle the push notifications. You can do this by implementing the didReceiveLiveActivityPushNotification delegate method.

Here is an example of how to implement the didReceiveLiveActivityPushNotification delegate method:

func didReceiveLiveActivityPushNotification(activity: Activity) {
  // Update the Live Activity view with the data from the push notification.
  updateLiveActivityView(activity)
}

This code will update the Live Activity view with the data from the push notification.

ActivityKits function inside the LiveActivityIntent

Here are the steps on how to use ActivityKit's functions inside the LiveActivityIntent:

1. Import the ActivityKit framework.
2. Create an Activity object.
3. Set the dynamicData property of the Activity object to the dynamic data for the Live Activity view.
4. Call the update() method on the Activity object to update the Live Activity view.

Here is an example of how to do this:

`import ActivityKit

 func updateLiveActivityView(intent: LiveActivityIntent) {
   // Create an Activity object.
   let activity = Activity(activityType: "com.example.myapp.liveactivity")

   // Set the dynamic data for the Live Activity view.
   let dynamicData = ["text": "New text", "buttons": ["New button"]]
   activity.dynamicData = dynamicData

   // Update the Live Activity view.
   activity.update()
 }`

This code will update the text and buttons in the Live Activity view.

You can also use the didUpdateLiveActivity delegate method to receive updates to the Live Activity view. This method is called whenever the dynamic data for the Live Activity is updated.

Here is an example of how to implement the didUpdateLiveActivity delegate method:

func didUpdateLiveActivity(activity: Activity) {
  // Update the Live Activity view with the new dynamic data.
  updateLiveActivityView(activity)
}

This code will update the Live Activity view with the new dynamic data.