ios - 按数量对 HKSampleQuery 项目进行排序

Question

我想获取 HealthKit 数量数据并按数量值对它们进行排序。是否可以？

我知道我可以通过在 NSPredicate 中使用 HKPredicateKeyPathQuantity 来过滤它们，但我找不到类似的排序键

示例

let type = HKObjectType.quantityTypeForIdentifier(HKQuantityTypeIdentifierHeight)
let sort = [
  NSSortDescriptor(key: HKSampleSortIdentifierStartDate, ascending: true),
  NSSortDescriptor(key: HKSampleSortIdentifierEndDate, ascending: true),

  //I want one more Sort Item here :(
  //NSSortDescriptor(key: SortIdentifierIdeQuantity, ascending: true)
]

let predicate = NSPredicate(format: "\(HKPredicateKeyPathStartDate) > %@ AND \(HKPredicateKeyPathStartDate) < %@ AND \(HKPredicateKeyPathQuantity) == %@",
  argumentArray:[start, end, value])

let query = HKSampleQuery(sampleType: type, predicate: predicate, limit: limit, sortDescriptors: sort) { query, res, error in
  completion(res, error)
}

healthKit.executeQuery(query)

}

Answer 1

目前 HealthKit 只能按日期对结果进行排序。你应该file a bug与 Apple 合作以获得您想要的增强功能。