Apple watch HealthKit - unrecognized selector HKHealthStore startWorkoutSession:completion:

Question

I try to get heart rate with watch OS2.0 I get this error when i try to start the workout session

Carleep WatchKit Extension[594:91719] -[HKHealthStore startWorkoutSession:completion:]: unrecognized selector sent to instance 0x155b40e0

• I well added healthkit framework to my project.
• I added -all_load and -ObjC in Other linker flags
• I find this function in healthkit framework when i cmd+click on startWorkoutSession...
• I have iOS 9 and apple watch under watchOS 2.0

I succeed to request authorization for heartRate. I don't know if i need force import of HKHealthstore+HKWorkout category, and i don't know how to do this.

If you have an idea about my problem and how to solve this it would be great.

Regards,

Answer 1

Ok i found the solution, i just update Xcode 7 to the latest beta version (6). They removed the completion block in startworkoutsession in the last beta of watch os2. My sdk for watch os 2 in Xcode 7 beta 3 was outdated.