[英]Healthkit multiple HKAnchoredObjectQuery not returning data for all sample types
[英]Healthkit HKAnchoredObjectQuery in iOS 9 not returning HKDeletedObject
我很高兴得知Apple在iOS 9的HealthKit中添加了删除跟踪功能。因此,我建立了一个测试项目来进行尝试。 不幸的是,尽管我可以很好地获取新数据,但在回调中却没有任何删除的对象。
我有一个正常运行的HKAnchoredObjectQuery,它可以跟踪HKQueryAnchor并在通过Health应用程序向HealthKit中添加BloodGlucose量时为我提供新的HKSamples。 但是,当我删除相同数量并重新运行应用程序时,HKDeletedObject始终为空。 即使我同时进行添加和删除。 似乎不管我做什么,HKDeletedObject数组始终为空。 但是添加工作正常(仅从上一个锚点获取添加的样本)。
这是我的代码。 它只有2个文件。 要重新创建项目,只需创建一个新的快速项目,给自己命名HealthKit权利,然后将其复制。(注意:运行该项目时,每次运行仅获得一个更新,因此,如果在HealthKit中进行更改,则必须停止并重新启动应用程序以测试回调。)
这是我的HealthKit客户:
//
// HKClient.swift
// HKTest
import UIKit
import HealthKit
class HKClient : NSObject {
var isSharingEnabled: Bool = false
let healthKitStore:HKHealthStore? = HKHealthStore()
let glucoseType : HKObjectType = HKObjectType.quantityTypeForIdentifier(HKQuantityTypeIdentifierBloodGlucose)!
override init(){
super.init()
}
func requestGlucosePermissions(authorizationCompleted: (success: Bool, error: NSError?)->Void) {
let dataTypesToRead : Set<HKObjectType> = [ glucoseType ]
if(!HKHealthStore.isHealthDataAvailable())
{
// let error = NSError(domain: "com.test.healthkit", code: 2, userInfo: [NSLocalizedDescriptionKey: "Healthkit is not available on this device"])
self.isSharingEnabled = false
return
}
self.healthKitStore?.requestAuthorizationToShareTypes(nil, readTypes: dataTypesToRead){(success, error) -> Void in
self.isSharingEnabled = true
authorizationCompleted(success: success, error: error)
}
}
func getGlucoseSinceAnchor(anchor:HKQueryAnchor?, maxResults:uint, callback: ((source: HKClient, added: [String]?, deleted: [String]?, newAnchor: HKQueryAnchor?, error: NSError?)->Void)!){
let queryEndDate = NSDate(timeIntervalSinceNow: NSTimeInterval(60.0 * 60.0 * 24))
let queryStartDate = NSDate.distantPast()
let sampleType: HKSampleType = glucoseType as! HKSampleType
let predicate: NSPredicate = HKAnchoredObjectQuery.predicateForSamplesWithStartDate(queryStartDate, endDate: queryEndDate, options: HKQueryOptions.None)
var hkAnchor: HKQueryAnchor;
if(anchor != nil){
hkAnchor = anchor!
} else {
hkAnchor = HKQueryAnchor(fromValue: Int(HKAnchoredObjectQueryNoAnchor))
}
let onAnchorQueryResults : ((HKAnchoredObjectQuery, [HKSample]?, [HKDeletedObject]?, HKQueryAnchor?, NSError?) -> Void)! = {
(query:HKAnchoredObjectQuery, addedObjects:[HKSample]?, deletedObjects:[HKDeletedObject]?, newAnchor:HKQueryAnchor?, nsError:NSError?) -> Void in
var added = [String]()
var deleted = [String]()
if (addedObjects?.count > 0){
for obj in addedObjects! {
let quant = obj as? HKQuantitySample
if(quant?.UUID.UUIDString != nil){
let val = Double( (quant?.quantity.doubleValueForUnit(HKUnit(fromString: "mg/dL")))! )
let msg : String = (quant?.UUID.UUIDString)! + " " + String(val)
added.append(msg)
}
}
}
if (deletedObjects?.count > 0){
for del in deletedObjects! {
let value : String = del.UUID.UUIDString
deleted.append(value)
}
}
if(callback != nil){
callback(source:self, added: added, deleted: deleted, newAnchor: newAnchor, error: nsError)
}
}
let anchoredQuery = HKAnchoredObjectQuery(type: sampleType, predicate: predicate, anchor: hkAnchor, limit: Int(maxResults), resultsHandler: onAnchorQueryResults)
healthKitStore?.executeQuery(anchoredQuery)
}
let AnchorKey = "HKClientAnchorKey"
func getAnchor() -> HKQueryAnchor? {
let encoded = NSUserDefaults.standardUserDefaults().dataForKey(AnchorKey)
if(encoded == nil){
return nil
}
let anchor = NSKeyedUnarchiver.unarchiveObjectWithData(encoded!) as? HKQueryAnchor
return anchor
}
func saveAnchor(anchor : HKQueryAnchor) {
let encoded = NSKeyedArchiver.archivedDataWithRootObject(anchor)
NSUserDefaults.standardUserDefaults().setValue(encoded, forKey: AnchorKey)
NSUserDefaults.standardUserDefaults().synchronize()
}
}
这是我的观点:
//
// ViewController.swift
// HKTest
import UIKit
import HealthKit
class ViewController: UIViewController {
let debugLabel = UILabel(frame: CGRect(x: 10,y: 20,width: 350,height: 600))
override func viewDidLoad() {
super.viewDidLoad()
self.view = UIView();
self.view.backgroundColor = UIColor.whiteColor()
debugLabel.textAlignment = NSTextAlignment.Center
debugLabel.textColor = UIColor.blackColor()
debugLabel.lineBreakMode = NSLineBreakMode.ByWordWrapping
debugLabel.numberOfLines = 0
self.view.addSubview(debugLabel)
let hk = HKClient()
hk.requestGlucosePermissions(){
(success, error) -> Void in
if(success){
let anchor = hk.getAnchor()
hk.getGlucoseSinceAnchor(anchor, maxResults: 0)
{ (source, added, deleted, newAnchor, error) -> Void in
var msg : String = String()
if(deleted?.count > 0){
msg += "Deleted: \n" + (deleted?[0])!
for s in deleted!{
msg += s + "\n"
}
}
if (added?.count > 0) {
msg += "Added: "
for s in added!{
msg += s + "\n"
}
}
if(error != nil) {
msg = "Error = " + (error?.description)!
}
if(msg.isEmpty)
{
msg = "No changes"
}
debugPrint(msg)
if(newAnchor != nil && newAnchor != anchor){
hk.saveAnchor(newAnchor!)
}
dispatch_async(dispatch_get_main_queue(), { () -> Void in
self.debugLabel.text = msg
})
}
}
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
注意:我知道Apple建议使用HKObserverQuery进行设置。 我最初是在Xamarin项目中这样做的,其行为是相同的(没有发送HKDeletedObjects)。 因此,在快速尝试时,为简单起见,我省略了HKObserverQuery。
实例化查询时,删除谓词(谓词:nil),您将看到更多结果,包括已删除的结果。 第一次运行此操作(在保存HKQueryAnchor之前),您将获得所有结果,因此您可能需要做一些过滤这些结果的操作; 但是随后执行查询将使用您保存的锚,因此您将仅看到自该保存的锚以来的更改。
您可能还想在执行之前在查询上设置updateHandler属性。 这会将查询设置为在发生更改(添加或删除)时在后台调用更新处理程序连续运行。 getGlucoseSinceAnchor(...)末尾的代码看起来像
...
let anchoredQuery = HKAnchoredObjectQuery(type: sampleType, predicate: nil, anchor: hkAnchor, limit: Int(maxResults), resultsHandler: onAnchorQueryResults)
anchoredQuery.updateHandler = onAnchorQueryResults
healthKitStore?.executeQuery(anchoredQuery)
...
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