获取手机健康应用中的步数和距离

废话不多说，直接上步骤

首先新建一个类HealthKitManage，采用单利模式

HealthKitManage.h中导入

#import <HealthKit/HealthKit.h>
#import <UIKit/UIDevice.h>

1.定义

#define HKVersion [[[UIDevice currentDevice] systemVersion] doubleValue]
#define CustomHealthErrorDomain @"com.sdqt.healthError"

2.定义几个方法

+(id)shareInstance;   //单例
- (void)authorizeHealthKit:(void(^)(BOOL success, NSError *error))compltion;
- (void)getStepCount:(void(^)(double value, NSError *error))completion;  //获取步数
- (void)getDistance:(void(^)(double value, NSError *error))completion;   //获取距离

HealthKitManage.m中

1.单例

+(id)shareInstance{      //单例
    static id manager ;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        manager = [[[self class] alloc] init];
    });
    return manager;
}

2.实现其他方法

/*
 *  @brief  检查是否支持获取健康数据
 */
- (void)authorizeHealthKit:(void(^)(BOOL success, NSError *error))compltion{
    if(HKVersion >= 8.0){
        if (![HKHealthStore isHealthDataAvailable]) {
            NSError *error = [NSError errorWithDomain: @"com.raywenderlich.tutorials.healthkit" code: 2 userInfo: [NSDictionary dictionaryWithObject:@"HealthKit is not available in th is Device"                                                                      forKey:NSLocalizedDescriptionKey]];
            if (compltion != nil) {
                compltion(false, error);
            }
            return;
        }
        if ([HKHealthStore isHealthDataAvailable]) {
            if(self.healthStore == nil)
                self.healthStore = [[HKHealthStore alloc] init];
            /*
             组装需要读写的数据类型
             */
            NSSet *writeDataTypes = [self dataTypesToWrite];
            NSSet *readDataTypes = [self dataTypesRead];
            
            /*
             注册需要读写的数据类型，也可以在“健康”APP中重新修改
             */
            [self.healthStore requestAuthorizationToShareTypes:writeDataTypes readTypes:readDataTypes completion:^(BOOL success, NSError *error) {
                
                if (compltion != nil) {
                    NSLog(@"error->%@", error.localizedDescription);
                    compltion (success, error);
                }
            }];
        }
    }
    else {
        NSDictionary *userInfo = [NSDictionary dictionaryWithObject:@"iOS 系统低于8.0"                                                                      forKey:NSLocalizedDescriptionKey];
        NSError *aError = [NSError errorWithDomain:CustomHealthErrorDomain code:0 userInfo:userInfo];
        compltion(0,aError);
    }
}

/*!
 *  @brief  写权限
 *  @return 集合
 */
- (NSSet *)dataTypesToWrite{
    HKQuantityType *heightType = [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierHeight];
    HKQuantityType *weightType = [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierBodyMass];
    HKQuantityType *temperatureType = [HKQuantityType quantityTypeForIdentifier:HKQuantityTypeIdentifierBodyTemperature];
    HKQuantityType *activeEnergyType = [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierActiveEnergyBurned];
    
    return [NSSet setWithObjects:heightType, temperatureType, weightType,activeEnergyType,nil];
}

/*!
 *  @brief  读权限
 *  @return 集合
 */
- (NSSet *)dataTypesRead{
    HKQuantityType *heightType = [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierHeight];
    HKQuantityType *weightType = [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierBodyMass];
    HKQuantityType *temperatureType = [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierBodyTemperature];
    HKCharacteristicType *birthdayType = [HKObjectType characteristicTypeForIdentifier:HKCharacteristicTypeIdentifierDateOfBirth];
    HKCharacteristicType *sexType = [HKObjectType characteristicTypeForIdentifier:HKCharacteristicTypeIdentifierBiologicalSex];
    HKQuantityType *stepCountType = [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierStepCount];
    HKQuantityType *distance = [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierDistanceWalkingRunning];
    HKQuantityType *activeEnergyType = [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierActiveEnergyBurned];
    
    return [NSSet setWithObjects:heightType, temperatureType,birthdayType,sexType,weightType,stepCountType, distance, activeEnergyType,nil];
}

//获取步数
- (void)getStepCount:(void(^)(double value, NSError *error))completion{
    HKQuantityType *stepType = [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierStepCount];
    NSSortDescriptor *timeSortDescriptor = [[NSSortDescriptor alloc] initWithKey:HKSampleSortIdentifierEndDate ascending:NO];
    
    // Since we are interested in retrieving the user's latest sample, we sort the samples in descending order, and set the limit to 1. We are not filtering the data, and so the predicate is set to nil.
    HKSampleQuery *query = [[HKSampleQuery alloc] initWithSampleType:stepType predicate:[HealthKitManage predicateForSamplesToday] limit:HKObjectQueryNoLimit sortDescriptors:@[timeSortDescriptor] resultsHandler:^(HKSampleQuery *query, NSArray *results, NSError *error) {
        if(error){
            completion(0,error);
        }
        else{
            NSInteger totleSteps = 0;
            for(HKQuantitySample *quantitySample in results){
                HKQuantity *quantity = quantitySample.quantity;
                HKUnit *heightUnit = [HKUnit countUnit];
                double usersHeight = [quantity doubleValueForUnit:heightUnit];
                totleSteps += usersHeight;
            }
            NSLog(@"当天行走步数 = %ld",(long)totleSteps);
            completion(totleSteps,error);
        }
    }];
    
    [self.healthStore executeQuery:query];
}

//获取公里数
- (void)getDistance:(void(^)(double value, NSError *error))completion{
    
    HKQuantityType *distanceType = [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierDistanceWalkingRunning];
    NSSortDescriptor *timeSortDescriptor = [[NSSortDescriptor alloc] initWithKey:HKSampleSortIdentifierEndDate ascending:NO];
    HKSampleQuery *query = [[HKSampleQuery alloc] initWithSampleType:distanceType predicate:[HealthKitManage predicateForSamplesToday] limit:HKObjectQueryNoLimit sortDescriptors:@[timeSortDescriptor] resultsHandler:^(HKSampleQuery * _Nonnull query, NSArray<__kindof HKSample *> * _Nullable results, NSError * _Nullable error) {
        
        if(error){
            completion(0,error);
        }
        else{
            double totleSteps = 0;
            for(HKQuantitySample *quantitySample in results){
                HKQuantity *quantity = quantitySample.quantity;
                HKUnit *distanceUnit = [HKUnit meterUnitWithMetricPrefix:HKMetricPrefixKilo];
                double usersHeight = [quantity doubleValueForUnit:distanceUnit];
                totleSteps += usersHeight;
            }
            NSLog(@"当天行走距离 = %.2f",totleSteps);
            completion(totleSteps,error);
        }
    }];
    [self.healthStore executeQuery:query];
}

/*!
 *  @brief  当天时间段
 *
 *  @return 时间段
 */
+ (NSPredicate *)predicateForSamplesToday {
    NSCalendar *calendar = [NSCalendar currentCalendar];
    NSDate *now = [NSDate date];
    NSDateComponents *components = [calendar components:NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay fromDate:now];
    [components setHour:0];
    [components setMinute:0];
    [components setSecond: 0];
    
    NSDate *startDate = [calendar dateFromComponents:components];
    NSDate *endDate = [calendar dateByAddingUnit:NSCalendarUnitDay value:1 toDate:startDate options:0];
    NSPredicate *predicate = [HKQuery predicateForSamplesWithStartDate:startDate endDate:endDate options:HKQueryOptionNone];
    return predicate;
}

调用，比如我们想在ViewConreoller中使用步数和距离

1.ViewConreoller.m 中先导入

#import "HealthKitManage.h"

2.获取步数，value即为步数

    HealthKitManage *manage = [HealthKitManage shareInstance];
    [manage authorizeHealthKit:^(BOOL success, NSError *error) {
        
        if (success) {
            NSLog(@"success");
            [manage getStepCount:^(double value, NSError *error) {
                NSLog(@"1count-->%.0f", value);
                NSLog(@"1error-->%@", error.localizedDescription);
                });
            }];
        }
        else {
            NSLog(@"fail");
        }
    }];

2.获取距离，value即为距离

    HealthKitManage *manage = [HealthKitManage shareInstance];
    [manage authorizeHealthKit:^(BOOL success, NSError *error) {
        
        if (success) {
            NSLog(@"success");
            [manage getDistance:^(double value, NSError *error) {
                NSLog(@"2count-->%.2f", value);
                NSLog(@"2error-->%@", error.localizedDescription);
                });               
            }];
        }
        else {
            NSLog(@"fail");
        }
    }];

• 本文这样的方法，不能实时记录步数，它是一种每天截止到你获取数据时间的统计。
• 实时计步可以采用陀螺仪和传感器的方法，但是这种方法需要很麻烦的算法，否则手里拿着手机晃也会增加步数，本人才疏学浅，还不会。
• 文章仅供自己学习，复习和新手实现基本功能使用，觉得写的不好的，请移驾别处，好走不送～