Environment:
Xcode 26.4 (17E192)
iOS 26.4.1
iPhone 15 Pro
Project uses PBXFileSystemSynchronizedRootGroup (Xcode 26 format)
Setup:
Widget Extension target named ModusWidgetExtension
Bundle ID: com.calvin.Modus.ModusWidget
NSSupportsLiveActivities = YES in both main app and widget extension Info.plist
Live Activities enabled in Settings → Modus
Live Activities enabled in Settings → Face ID & Passcode → Allow Access When Locked
Background App Refresh enabled
Push Notifications capability on both targets
ActivityAttributes struct added to both targets via file target membership
Behaviour:
ActivityAuthorizationInfo().areActivitiesEnabled returns true
Activity.request() succeeds and returns a valid activity ID
No error is thrown
Nothing appears on lock screen or Dynamic Island in foreground or background
Widget preview in Xcode renders correctly for all presentations (compact, minimal, expanded, lock screen)
Console output from liveactivitiesd filtered logs:
"Foreground process is permitted to update activity"
"XPCInputParticipant has no activity for update" (ERROR — repeated)
"Received state update for [app<com.calvin.Modus>], running-active-NotVisible"
The activity is being created and the system is receiving state updates, but the widget extension is not rendering it. The XPCInputParticipant error suggests the widget extension process cannot find the activity created by the main app.
Topic:
App & System Services
SubTopic:
Widgets & Live Activities
1
0
40