英文:
how to start a liveActivity from a remote notification • Swift
问题
在实现用于调试目的的锁定屏幕实时活动小部件时，我有一个按钮，可以运行startLiveActivity()函数，应用程序正常运行，小部件完全正常。
然而，我需要这个活动小部件在应用程序被杀死或处于后台时，每当应用程序接收到远程推送通知时都出现，但它只在应用程序在前台运行时出现，这并不能真正帮助这里的情况。
class LiveActivityHelper: ObservableObject {
static var shared = LiveActivityHelper()
@Published var activity: Activity<Attributes>? = nil
func startLiveActivity() {
let state = Attributes.ContentState()
activity = try? Activity<Attributes>.request(attributes: Attributes(), contentState: state, pushType: nil)
}
我尝试在appDelegate的didReceiveRemoteNotification中运行startLiveActivity()函数：
func userNotificationCenter(_ center: UNUserNotificationCenter,
didReceive response: UNNotificationResponse) async {
LiveActivityHelper.shared.startLiveActivity()
}
还有从通知扩展中：
class NotificationService: UNNotificationServiceExtension, UNUserNotificationCenterDelegate {
var contentHandler: ((UNNotificationContent) -> Void)?
var bestAttemptContent: UNMutableNotificationContent?
override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) {
...
LiveActivityHelper.shared.startLiveActivity()
所有这些方法都导致相同的结果，小部件只在应用程序打开时出现。
Apple的文档包括如何通过远程通知更新小部件，但没有说明如何使用这种方法启动它。
英文:
When implementing lock screen live activity widget for debugging purposes I had a button which runs startLiveActivity() function, app runs normaly widget appears totally functioning.
However I need this activity widget to appear whenever the app receives a remote push notification when the app is killed or in background, but it is appearing only when app is in foreground which doesn't really help the case here.
class LiveActivityHelper: ObservableObject {
static var shared = LiveActivityHelper()
@Published var activity: Activity<Attributes>? = nil
func startLiveActivity() {
let state = Attributes.ContentState()
activity = try? Activity<Attributes>.request(attributes: Attributes(), contentState: state, pushType: nil)
}
I tried running the startLiveActivity() function from appDelegate's didReceiveRemoteNotification:
func userNotificationCenter(_ center: UNUserNotificationCenter,
didReceive response: UNNotificationResponse) async {
LiveActivityHelper.shared.startLiveActivity()
}
And from a notification extension I have:
class NotificationService: UNNotificationServiceExtension, UNUserNotificationCenterDelegate {
var contentHandler: ((UNNotificationContent) -> Void)?
var bestAttemptContent: UNMutableNotificationContent?
override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) {
...
LiveActivityHelper.shared.startLiveActivity()
All these approaches lead to the same result, the widget appearing only when the app is opened.
Apple's documentation included updating the widget from a remote notification but not how to start it using that approach.
答案1
得分: 1
A Live Activity can only be started while the app is in foreground，因为其目的是跟踪用户发起的功能，根据文档。
发送您的推送通知，让用户使用它打开您的应用程序，然后启动活动。明确说明您期望的流程不受支持。
英文:
A Live Activity can only be started while the app is in foreground, because its purpose is to track a user-initiated feature, based on documentation.
Send your push notification, have your user open your app with it, then start the activity. Your desired flow is explicitly stated to be unsupported.
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