HKObserverQuery randomly called twice in a row

HKObserverQuery randomly called twice in a row

By : user2951211
Date : November 18 2020, 01:01 AM
Hope this helps I believe I've now fixed the issue by setting a BOOL flag to prevent a second bogus HKObserverQuery to be called, and eliminating duplicate processing for no reason. Code:
code :
- (void)observeHR
    HKObserverQuery *query = [[HKObserverQuery alloc]initWithSampleType:[HKSampleType quantityTypeForIdentifier:HKQuantityTypeIdentifierHeartRate]
    updateHandler:^(HKObserverQuery *query, HKObserverQueryCompletionHandler completionHandler, NSError *error)
        if (!self.queryInProgress)
            self.queryInProgress = YES;

            if (!error)
                [self queryWithCompletionHandler:completionHandler];
                self.queryInProgress = NO;

                if (completionHandler)
            NSLog(@"Query already in progress");

    [self.healthStore executeQuery:query];

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touchesEnded not being called??? or randomly being called

touchesEnded not being called??? or randomly being called

By : user1949866
Date : March 29 2020, 07:55 AM
will be helpful for those in need For whatever reason, touchesEnded is being delayed only when the touch is within the scrollview. If you either a) disable the scrollview from scrolling; or b) don't use a scrollview, then touchesEnded gets delivered right away.
I have heard where some people have intercepted sendEvent, but that seems sketchy to me and I really don't want to screw up the responder chain since sendEvent handles an awful lot of events.
Does disableBackgroundDeliveryForType delete the corresponding HKObserverQuery?

Does disableBackgroundDeliveryForType delete the corresponding HKObserverQuery?

By : user3722363
Date : March 29 2020, 07:55 AM
I wish this helpful for you Disabling background delivery won't stop the observer query. It only prevents your app from being resumed in the background to be informed about new samples. When your app is in the foreground, your observer query's updateHandler will continue to execute when there is new data. You must call HKHealthStore.stopQuery(backgroundQuery) to stop it.
HKObserverQuery in Health Kit

HKObserverQuery in Health Kit

By : Matt brown
Date : March 29 2020, 07:55 AM
Hope this helps HKObserverQuery is not intended to deliver data to your app. The updateHandler is simply called whenever a HKSample matching your predicate is added or removed from HealthKit. It is then up to your app to perform additional queries in response, such as HKSampleQuery or HKStatisticsQuery.
HKObserverQuery cannot work on iPhone

HKObserverQuery cannot work on iPhone

By : Jack Lazerbeam Tomli
Date : March 29 2020, 07:55 AM
wish help you to fix your issue You cannot use HKSampleQuery in HKObserverQuery. updateHandler of HKObserverQuery.The handler of an observer query can be executed in the background mode but one of a sample query cannot be executed in the background mode.
HealthKit: HKObserverQuery not Firing

HealthKit: HKObserverQuery not Firing

By : Alan Formstone
Date : March 29 2020, 07:55 AM
I wish this helpful for you I have found, empirically (not from documentation), that the Observer Query does NOT fire when running in the simulator but it DOES fire when running on device. And I do not have the background modes capability turned on.
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