Apple Watch的心率数据

Question

我们可以直接从苹果手表获取心率吗？我知道这是一个重复的问题,但没有人在5个月内问过这个问题.我知道你可以从健康应用程序访问它,但我不确定它将是"实时"的.

Answer 1

心率原始数据信息现在可用于Watchkit for watchOS 2.0.

WatchOS 2包括对其他现有框架的许多增强,例如HealthKit,允许访问实时访问心率和健康信息的健康传感器.

您可以在以下会话中查看此信息,总共30分钟演示.如果您不想观看整个会话,那么您可以直接跳转到Healthkit API25-28分钟之间的功能:

WatchKit for WWOS 2015中的watchOS 2.0 Session

这是源代码实现链接

如HKWorkout类参考中所述:

该HKWorkout班是一个具体子HKSample类. HealthKit使用锻炼来跟踪各种活动.锻炼对象不仅存储关于活动的摘要信息(例如,持续时间,总距离和燃烧的总能量),它还充当其他样本的容器.您可以将任意数量的样本与锻炼相关联.通过这种方式,您可以添加与锻炼相关的详细信息.

在该给定链接中,代码的以下部分定义了heartRate的采样率

NSMutableArray *samples = [NSMutableArray array];

HKQuantity *heartRateForInterval =
[HKQuantity quantityWithUnit:[HKUnit unitFromString:@"count/min"]
                 doubleValue:95.0];

HKQuantitySample *heartRateForIntervalSample =
[HKQuantitySample quantitySampleWithType:heartRateType
                                quantity:heartRateForInterval
                               startDate:intervals[0]
                                 endDate:intervals[1]];

[samples addObject:heartRateForIntervalSample];

他们在那里说:

您需要根据锻炼类型和应用程序的需求微调相关样本的确切长度.使用5分钟的间隔可以最大限度地减少存储锻炼所需的记忆量,同时仍能提供长时间锻炼过程中强度变化的一般感觉.使用5秒间隔提供了更加详细的锻炼视图,但需要更多的内存和处理.

Answer 2

在探索HealthKit和WatchKit Extension之后,我的发现如下:

1. 我们不需要WatchKit扩展来获取心率数据.
2. 你只需要配备配对Apple手表的iPhone(很明显)
3. 默认Apple Watch心率监视器应用程序仅在它位于前台时立即更新HealthKit数据.
4. 当默认Apple Watch心率监测应用程序位于后台时,它会以9-10分钟的间隔更新HealthKit数据.

5. 要在查询后获取HealthKit的心率数据,需要定期触发.

   func getSamples()
   {
       let heartrate =HKQuantityType.quantityTypeForIdentifier(HKQuantityTypeIdentifierHeartRate)
       let sort = [
          NSSortDescriptor(key: HKSampleSortIdentifierStartDate, ascending: false)
   ]
   let heartRateUnit = HKUnit(fromString: "count/min")
   let sampleQuery = HKSampleQuery(sampleType: heartrate!, predicate: nil, limit: 1, sortDescriptors: sort, resultsHandler: { [unowned self] (query, results, error) in
       if let results = results as? [HKQuantitySample]
       {
            let sample = results[0] as HKQuantitySample
   
           let value = sample.quantity.doubleValueForUnit(self.heartRateUnit)
           print (value)
           let rate = results[0]
           print(results[0])
           print(query)
           self.updateHeartRate(results)
       }
     })
       healthStore?.executeQuery(sampleQuery)
   
   }
   
   func updateHeartRate(samples: [HKSample]?)
   {
       guard let heartRateSamples = samples as? [HKQuantitySample] else {return}
       dispatch_async(dispatch_get_main_queue()) {
           guard let sample = heartRateSamples.first else{return}
           let value = sample.quantity.doubleValueForUnit(self.heartRateUnit)
           self.heartRateLabel.text = String(UInt16(value))
           let date = sample.startDate
           let dateFormatter = NSDateFormatter()
           dateFormatter.dateFormat = "yyyy-MM-dd hh:mm:ss"
           self.timeStampLabel.text = dateFormatter.stringFromDate(date)
       }
   }
   

如果有人获得更多信息,请更新我.
快乐的编码.

Answer 3

没有直接的方法可以访问Apple Watch上的任何传感器.您将不得不依赖HealthKit的访问权限.

一位苹果布道者说这个

目前无法创建心脏监护应用程序.数据无法保证实时发送到iPhone,因此您无法及时确定发生了什么.

请参阅https://devforums.apple.com/message/1098855#1098855

Answer 4

您可以通过开始锻炼并从healthkit查询心率数据来获取心率数据.

1. 要求预先阅读锻炼数据.

   HKHealthStore *healthStore = [[HKHealthStore alloc] init];
   HKQuantityType *type = [HKQuantityType quantityTypeForIdentifier:HKQuantityTypeIdentifierHeartRate];
   HKQuantityType *type2 = [HKQuantityType quantityTypeForIdentifier:HKQuantityTypeIdentifierDistanceWalkingRunning];
   HKQuantityType *type3 = [HKQuantityType quantityTypeForIdentifier:HKQuantityTypeIdentifierActiveEnergyBurned];
   
   [healthStore requestAuthorizationToShareTypes:nil readTypes:[NSSet setWithObjects:type, type2, type3, nil] completion:^(BOOL success, NSError * _Nullable error) {
   
   if (success) {
       NSLog(@"health data request success");
   
   }else{
       NSLog(@"error %@", error);
   }
   }];
   

2. 在iPhone上的AppDelegate中,请回复此请求

   -(void)applicationShouldRequestHealthAuthorization:(UIApplication *)application{
   
   [healthStore handleAuthorizationForExtensionWithCompletion:^(BOOL success, NSError * _Nullable error) {
           if (success) {
               NSLog(@"phone recieved health kit request");
           }
       }];
   }
   

3. 然后执行Healthkit Delegate:

   -(void)workoutSession:(HKWorkoutSession *)workoutSession didFailWithError:(NSError *)error{
   
   NSLog(@"session error %@", error);
   }
   
   -(void)workoutSession:(HKWorkoutSession *)workoutSession didChangeToState:(HKWorkoutSessionState)toState fromState:(HKWorkoutSessionState)fromState date:(NSDate *)date{
   
   dispatch_async(dispatch_get_main_queue(), ^{
       switch (toState) {
           case HKWorkoutSessionStateRunning:
   
               //When workout state is running, we will excute updateHeartbeat
               [self updateHeartbeat:date];
               NSLog(@"started workout");
           break;
   
           default:
           break;
       }
       });
   }
   

4. 现在是时候写了 **[self updateHeartbeat:date]**

   -(void)updateHeartbeat:(NSDate *)startDate{
   
       //first, create a predicate and set the endDate and option to nil/none 
       NSPredicate *Predicate = [HKQuery predicateForSamplesWithStartDate:startDate endDate:nil options:HKQueryOptionNone];
   
       //Then we create a sample type which is HKQuantityTypeIdentifierHeartRate
       HKSampleType *object = [HKSampleType quantityTypeForIdentifier:HKQuantityTypeIdentifierHeartRate];
   
       //ok, now, create a HKAnchoredObjectQuery with all the mess that we just created.
       heartQuery = [[HKAnchoredObjectQuery alloc] initWithType:object predicate:Predicate anchor:0 limit:0 resultsHandler:^(HKAnchoredObjectQuery *query, NSArray<HKSample *> *sampleObjects, NSArray<HKDeletedObject *> *deletedObjects, HKQueryAnchor *newAnchor, NSError *error) {
   
       if (!error && sampleObjects.count > 0) {
           HKQuantitySample *sample = (HKQuantitySample *)[sampleObjects objectAtIndex:0];
           HKQuantity *quantity = sample.quantity;
           NSLog(@"%f", [quantity doubleValueForUnit:[HKUnit unitFromString:@"count/min"]]);
       }else{
           NSLog(@"query %@", error);
       }
   
       }];
   
       //wait, it's not over yet, this is the update handler
       [heartQuery setUpdateHandler:^(HKAnchoredObjectQuery *query, NSArray<HKSample *> *SampleArray, NSArray<HKDeletedObject *> *deletedObjects, HKQueryAnchor *Anchor, NSError *error) {
   
        if (!error && SampleArray.count > 0) {
           HKQuantitySample *sample = (HKQuantitySample *)[SampleArray objectAtIndex:0];
           HKQuantity *quantity = sample.quantity;
           NSLog(@"%f", [quantity doubleValueForUnit:[HKUnit unitFromString:@"count/min"]]);
        }else{
           NSLog(@"query %@", error);
        }
   }];
   
       //now excute query and wait for the result showing up in the log. Yeah!
       [healthStore executeQuery:heartQuery];
   }
   

您还可以获得Healthkit的功能.如果您有任何疑问,请在下面发表评论.