如何从 HealthKit 中检索今天的正念记录?
How to retrieve today's mindful minutes from HealthKit?
我试图从 HealthKit 获取今天的正念分钟数,但我总是得到 44280 而不是健康应用程序中的 3,我编写了这个函数:
func getDailyMindfulnessTime(completion: @escaping (TimeInterval) -> Void) {
let sampleType = HKSampleType.categoryType(forIdentifier: .mindfulSession)!
let sortDescriptor = NSSortDescriptor(key: HKSampleSortIdentifierEndDate, ascending: false)
let startDate = Calendar.current.startOfDay(for: Date())
let endDate = Calendar.current.date(byAdding: .day, value: 1, to: startDate)
let predicate = HKQuery.predicateForSamples(withStart: startDate, end: endDate, options: .strictStartDate)
let query = HKSampleQuery(sampleType: sampleType, predicate: predicate, limit: HKObjectQueryNoLimit, sortDescriptors: [sortDescriptor]) { (_, results, error) in
if error != nil {
print(" HealthKit returned error while trying to query today's mindful sessions. The error was: \(error?.localizedDescription)")
}
var totalTime = TimeInterval()
if let results = results {
for result in results {
totalTime = result.endDate.timeIntervalSince(startDate)
completion(totalTime)
}
} else {
completion(0)
}
}
healthStore.execute(query)
}
}
我该怎么办?
当你计算时间时,你使用这个代码:
if let results = results {
for result in results {
totalTime = result.endDate.timeIntervalSince(startDate)
completion(totalTime)
}
} else {
completion(0)
}
然而,它并没有按照你的想法去做。它有两个主要问题:
- 您获取的不是会话的时长,而是从会话结束到一天开始的时间。要解决此问题,请使用
totalTime = result.endDate.timeIntervalSince(result.startDate)
- 我看到的另一个问题是您调用
completion
每个会话的长度,而不是总时间.这可能是您想要的,但如果不是,请将查询的内部更改为:
if error != nil {
print(" HealthKit returned error while trying to query today's mindful sessions. The error was: \(error?.localizedDescription)")
}
if let results = results {
var totalTime = TimeInterval()
for result in results {
totalTime += result.endDate.timeIntervalSince(result.startDate)
}
completion(totalTime)
} else {
completion(0)
}
这会在调用完成处理程序之前对所有会话求和。
希望对您有所帮助!
我试图从 HealthKit 获取今天的正念分钟数,但我总是得到 44280 而不是健康应用程序中的 3,我编写了这个函数:
func getDailyMindfulnessTime(completion: @escaping (TimeInterval) -> Void) {
let sampleType = HKSampleType.categoryType(forIdentifier: .mindfulSession)!
let sortDescriptor = NSSortDescriptor(key: HKSampleSortIdentifierEndDate, ascending: false)
let startDate = Calendar.current.startOfDay(for: Date())
let endDate = Calendar.current.date(byAdding: .day, value: 1, to: startDate)
let predicate = HKQuery.predicateForSamples(withStart: startDate, end: endDate, options: .strictStartDate)
let query = HKSampleQuery(sampleType: sampleType, predicate: predicate, limit: HKObjectQueryNoLimit, sortDescriptors: [sortDescriptor]) { (_, results, error) in
if error != nil {
print(" HealthKit returned error while trying to query today's mindful sessions. The error was: \(error?.localizedDescription)")
}
var totalTime = TimeInterval()
if let results = results {
for result in results {
totalTime = result.endDate.timeIntervalSince(startDate)
completion(totalTime)
}
} else {
completion(0)
}
}
healthStore.execute(query)
}
}
我该怎么办?
当你计算时间时,你使用这个代码:
if let results = results {
for result in results {
totalTime = result.endDate.timeIntervalSince(startDate)
completion(totalTime)
}
} else {
completion(0)
}
然而,它并没有按照你的想法去做。它有两个主要问题:
- 您获取的不是会话的时长,而是从会话结束到一天开始的时间。要解决此问题,请使用
totalTime = result.endDate.timeIntervalSince(result.startDate)
- 我看到的另一个问题是您调用
completion
每个会话的长度,而不是总时间.这可能是您想要的,但如果不是,请将查询的内部更改为:
if error != nil {
print(" HealthKit returned error while trying to query today's mindful sessions. The error was: \(error?.localizedDescription)")
}
if let results = results {
var totalTime = TimeInterval()
for result in results {
totalTime += result.endDate.timeIntervalSince(result.startDate)
}
completion(totalTime)
} else {
completion(0)
}
这会在调用完成处理程序之前对所有会话求和。
希望对您有所帮助!