No vibration component to haptics in 'Workout processing' mode

Number:rdar://38165825 Date Originated:2018-03-06
Status:Closed Resolved:2018-05-03
Product:watchOS + SDK Product Version:
Classification: Reproducible:
While an HKWorkoutSession is in progress haptic behaviour is inconsistent.

Steps for reproduction:

1. Check HealthKit entitlement is enabled correctly. Then build and run on a device (Simulator only plays the sound component of haptics and can be tricky to test AirPlay). Suspend once background-haptics app launches.
2. Ensure that no watchOS settings are enabled (e.g. Theater Mode, Do Not Disturb). Haptic Strength should be in either position 2 or 3 in Sounds & Haptics.
3. Connect to a Bluetooth headset.
4. Launch background-haptics app (pink icon).
5. Tap 'Start Workout’ to begin a HKWorkoutSession.
6. Use 'Play Haptic’ buttons to observe the following:

- When the screen is on, there is no sound component to the haptics.
- When the screen is off, the sound component plays, but there is no vibration.
- This is true regardless of if the app is in frontmost app state, or suspended.

Expected behaviour: both sound and vibration components should play in both situations. 

7. Tap ‘End Workout’ when finished.

Xcode 9.2; watchOS 4.2


This issue behaves as intended based on the following: The behaviour is currently expected, even though it might seem inconsistent. We are now closing this bug report. If you have questions about the resolution, or if this is still a critical issue for you, then please update your bug report with that information. Please be sure to regularly check new Apple releases for any updates that might affect this issue.

Attached project:

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