iOS关于HealthKit使用的主要对象及设置（一）

1、HealthKit的授权

//获取读取的授权

lethealthKitTypesToRead =NSSet(array:[

//出生日期

HKObjectType.characteristicTypeForIdentifier(HKCharacteristicTypeIdentifierDateOfBirth)!,

//血液类型

HKObjectType.characteristicTypeForIdentifier(HKCharacteristicTypeIdentifierBloodType)!,

//性别

HKObjectType.characteristicTypeForIdentifier(HKCharacteristicTypeIdentifierBiologicalSex)!,

//体重

HKObjectType.quantityTypeForIdentifier(HKQuantityTypeIdentifierBodyMass)!,

//身高

HKObjectType.quantityTypeForIdentifier(HKQuantityTypeIdentifierHeight)!,

HKObjectType.workoutType()

])

//获取写出的授权，也是需要表明相关的写入对象

lethealthKitTypeToWrite =NSSet.init(array: [

HKObjectType.quantityTypeForIdentifier(HKQuantityTypeIdentifierBodyMassIndex)!,

HKObjectType.quantityTypeForIdentifier(HKQuantityTypeIdentifierActiveEnergyBurned)!,

HKObjectType.quantityTypeForIdentifier(HKQuantityTypeIdentifierDistanceWalkingRunning)!,

HKQuantityType.workoutType()

])

将你想使用的相应的数据装入集合中。

验证健康数据是否可用

if !HKHealthStore.isHealthDataAvailable()｛

//TO DO SOME

｝

开始授权

let healthKitStore:HKHealthStore=HKHealthStore()

healthKitStore.requestAuthorizationToShareTypes(healthKitTypeToWrite as? Set, readTypes: healthKitTypesToRead as? Set) { (success, error) in ｛｝

2、获取相关信息

对于一些简单的数据（非集合的）如：个人的基本信息。可以直接通过HKHealthStore提供的相关方法直接获得

let healthKitStore:HKHealthStore=HKHealthStore()

//e.g

var age: Int

let birthDay: NSDate?

do{

birthDay =tryhealthKitStore.dateOfBirth()

}catch{

birthDay =nil

print("read Date Data faild")

}

ifbirthDay !=nil

{

lettoday =NSDate()

letdifferenceComponents =NSCalendar.currentCalendar().components(.NSYearCalendarUnit, fromDate: birthDay!, toDate: today, options:NSCalendarOptions(rawValue:0))

age = differenceComponents.year

}

而对于一些数据集组成的数据来说需要借助HKSampleQuery来进行相关的查询

@method initWithSampleType:predicate:limit:sortDescriptors:resultsHandler:

@abstract Returns a query that will retrieve HKSamples matching the given predicate.

@param sampleType   The type of sample to retrieve.

@param predicate   The predicate which samples should match.

@param limit   The maximum number of samples to return.Pass HKObjectQueryNoLimit for no limit.

@param sortDescriptors   The sort descriptors to use to order the resulting samples.

@param resultsHandler  The block to invoke with results when the query has finished executing.

*/

public init(sampleType:HKSampleType, predicate:NSPredicate?, limit:Int, sortDescriptors: [NSSortDescriptor]?, resultsHandler: (HKSampleQuery, [HKSample]?,NSError?) ->Void)

}

其上的方法通过相应的参数来控制查询结果

//sampleType：HKSampleType

let sampleType =HKSampleType.quantityTypeForIdentifier(HKQuantityTypeIdentifierHeight)

通过identifier来控制查询的是那一类的数据

通过predicate:NSPredicate来进行相关的筛选

//e.g 关于NSDate的筛选

//endDate为返回结果中的属性之一

NSPredicate*predicate_date =

[NSPredicatepredicateWithFormat:@"endDate >= %@ AND endDate <= %@", today,afterDay];

通过sortDescriptors: [NSSortDescriptor]?来进行排序处理

通过limit:Int来限制最大的数据个数

//今天（04.11）就先到这点吧。。。

//第一次发完善中吧