Correct Predicate to get daily steps data AS calculated by the health app

Question

Created Jul ’20

Replies 4

Boosts 0

Participants 2

I have written two difference types of predicates and both give me different results as compared to the health app. I am sure this has something to do with 12am, around when I take a little walk.

Here are the two predicates...

Code Block  NSPredicate *daySearchPredicate = [NSPredicate predicateWithFormat:@"startDate>=%@ && startDate<%@ && endDate>=%@ && endDate<%@",historyDate,nextDate,historyDate,nextDate];

Code Block NSPredicate *daySearchPredicate = [NSPredicate predicateWithFormat:@"startDate>=%@ && startDate<%@",historyDate,nextDate];

The data in the health app is ...
Yesterday: 1714
Today: 1076

The data I get with the first predicate is...
Yesterday: 1559
Today: 917

with the second predicate is...
Yesterday: 1874
Today: 917

Note: They even don't total up to be the same as each other or the health app data.

Here is my code that calculates the total...

Code Block //calculate total steps for today
int64_t steps=0;
for (HKQuantitySample *stepsSample in stepsPredicateResultsArray)
  {
    HKQuantity *stepsQuantity = [stepsSample quantity];
    int64_t currentSampleSteps = (int64_t)[stepsQuantity doubleValueForUnit:[HKUnit countUnit]];
    steps = steps + currentSampleSteps;
  }
  hObject.steps=steps;

Please help me set a predicate which make the Health app data and my data to be the same.

Thanks.

Boost

Answer 1

ace.neerav OP

Jul ’20

I found a method in HKQuery abstract class and I tried all the three combinations of Options but it gives me different results each time...

Code Block NSPredicate *daySearchPredicate = [HKQuery predicateForSamplesWithStartDate:historyDate endDate:historyDate options:HKQueryOptionNone];

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Answer 2

ace.neerav OP

Jul ’20

In Short, I want a predicate that searches the stepsSampleArray for steps from 00:00:00hrs current date to 11:59:59 hrs current date.

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Answer 3

ace.neerav OP

Jul ’20

does no one know the solution?

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Answer 4

Harshit_Singh15 OP

Nov ’24

@ace.neerav did you found any solution? I am facing the same issue, if the sample time range has the midnight in it, it's giving incorrect value, rest all day, the steps are exactly matching the Health App.

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