Is there a way to remove duplicates in HKSampleQuery?

Question

Created Oct ’18

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Hello all!

I have been using HealthKit to collect some health data, and I also need to collect information about the device that the data came from.

If I use HKSampleQuery, HealthKit returns all data available from all sources (e.g. steps data from iPhone and Apple Watch). In this case, I can get the device from which the sample originated, but I will also receive duplicate data and will have to create some kind of internal logic to identify it.

If I use a different query, such as HKStatisticsCollectionQuery, I will be able to get the consolidated data, without duplicates, but I will not have the device information. I can use the option .separateBySource and get the source information, but the HKSource class has considerably less information than the device class, HKDevice.

Am I missing option? Is there a simple way to remove duplicates in HKSampleQuery, while identifying and acting upon duplicate information?

Thank you!

Answer 1

ManuelMB OP

Oct ’18

To remove duplicates if you have an array of samples, you could create a Set with it

let uniqueSamples = Set(samples)

But you should be aware tha, a Set is an unordered collection of unique elements.

Answer 2

nms OP

Jul ’20

Did anyone solved it, I really want to show my sleep data just like HealthKit sleep data, but it got duplicate after using multiple data source at same start time and end time